460.3 Plant Inspection - Revision history

Smithk: Per CM, updated link to Asphalt Roadway Report

2021-12-08T16:00:40Z

Per CM, updated link to Asphalt Roadway Report

← Older revision		Revision as of 11:00, 8 December 2021
Line 495:		Line 495:
	The density is calculated by dividing the specific gravity of the core (G<sub>mc</sub>) taken from the roadway by the theoretical maximum specific gravity (G<sub>mm</sub>). For BB and BP mixes, the G<sub>mm</sub> of the mix is shown in the lower left-hand corner of the JMF. For Superpave mixes, the G<sub>mm</sub> of the mix is determined by AASHTO T209. The test result from the corresponding production period is then used to calculate the density of the core.		The density is calculated by dividing the specific gravity of the core (G<sub>mc</sub>) taken from the roadway by the theoretical maximum specific gravity (G<sub>mm</sub>). For BB and BP mixes, the G<sub>mm</sub> of the mix is shown in the lower left-hand corner of the JMF. For Superpave mixes, the G<sub>mm</sub> of the mix is determined by AASHTO T209. The test result from the corresponding production period is then used to calculate the density of the core.

	All test data will be recorded in the APIW for the represented production. Also, the applicable portions of the corresponding [~~[media~~:~~106~~.4.2.~~6.xls\|~~Asphalt Roadway Report]] should be completed and returned to the roadway inspector.		All test data will be recorded in the APIW for the represented production. Also, the applicable portions of the corresponding [https://epg.modot.org/forms/CM/Asphalt_Roadway_Report.xlsm Asphalt Roadway Report] should be completed and returned to the roadway inspector.

	One or more of the following factors may affect the test results. The cores should be free of tack and all other foreign material. The cores may need to be separated from previous lifts. This should be done in a manner that will not harm the core. The cores should be cooled to room temperature. The scale should be tared before each weight is obtained. When weighing in water, the suspension apparatus should be centered on the scale and hang freely in the container, the core should be completely submerged, and the water in the container should be maintained within the proper temperature range and at the level of the overflow outlet. The water should be potable. The cores should not be stacked in the basket because this may trap air bubbles. Also, all air bubbles should be removed from the basket before performing the test.		One or more of the following factors may affect the test results. The cores should be free of tack and all other foreign material. The cores may need to be separated from previous lifts. This should be done in a manner that will not harm the core. The cores should be cooled to room temperature. The scale should be tared before each weight is obtained. When weighing in water, the suspension apparatus should be centered on the scale and hang freely in the container, the core should be completely submerged, and the water in the container should be maintained within the proper temperature range and at the level of the overflow outlet. The water should be potable. The cores should not be stacked in the basket because this may trap air bubbles. Also, all air bubbles should be removed from the basket before performing the test.

Smithk: /* 460.3.15.1 Bin Percentages */ restored Bin Percentages and Scale Settings Worksheet (had been inadvertently removed)

2021-12-08T15:23:20Z

460.3.15.1 Bin Percentages: restored Bin Percentages and Scale Settings Worksheet (had been inadvertently removed)

← Older revision		Revision as of 10:23, 8 December 2021
Line 476:		Line 476:
	(8) Use a sample splitting procedure that thoroughly mixes and evenly splits the aggregate. Run both halves of the split occasionally as a check.		(8) Use a sample splitting procedure that thoroughly mixes and evenly splits the aggregate. Run both halves of the split occasionally as a check.

	===460.3.15.1 Bin Percentages===		===460.3.15.2 Bin Percentages===
	The JMF shows the virgin aggregate gradations of the individual fractions, the combined gradation of the mix, and the percentage of each aggregate fraction that will be used to achieve the combined gradation. The gradations of the virgin aggregate in the stockpiles at the plant should be similar to those on the JMF so that the combined gradation can be produced. The plant percentages will be recorded in the [[Media:460 ~~Figure~~ Bin Percentages and Scale Settings.~~pdf~~\|Bin Percentages and Scale Settings Worksheet]] on the first day of production and each time they are changed thereafter.		The JMF shows the virgin aggregate gradations of the individual fractions, the combined gradation of the mix, and the percentage of each aggregate fraction that will be used to achieve the combined gradation. The gradations of the virgin aggregate in the stockpiles at the plant should be similar to those on the JMF so that the combined gradation can be produced. The plant percentages will be recorded in the [[Media:460 Form Bin Percentages and Scale Settings.doc\|Bin Percentages and Scale Settings Worksheet]] on the first day of production and each time they are changed thereafter.

	In drum-mix plants, each cold feed bin is charged with a different aggregate fraction. In some cases, depending on the amount of an aggregate fraction used, two cold feed bins may contain		In drum-mix plants, each cold feed bin is charged with a different aggregate fraction. In some cases, depending on the amount of an aggregate fraction used, two cold feed bins may contain the same fraction. The cold feed percentage for each bin should correspond with the percentage of each aggregate fraction shown on the JMF. Since the JMF percentages are based on 100% aggregate and the plant operates on the basis of 100% mix, the plant percentages will need to be calculated. Multiply the cold feed percentages by the percent mineral aggregate (in decimal form) shown in the lower right-hand corner of the JMF. The plant percentages, including the binder percentage, should add up to 100%. Due to rounding, the percentages may need to be adjusted slightly.
	the same fraction. The cold feed percentage for each bin should correspond with the percentage
	of each aggregate fraction shown on the JMF. Since the JMF percentages are based on 100%
	aggregate and the plant operates on the basis of 100% mix, the plant percentages will need to be
	calculated. Multiply the cold feed percentages by the percent mineral aggregate (in decimal form) shown in the lower right-hand corner of the JMF. The plant percentages, including the binder percentage, should add up to 100%. Due to rounding, the percentages may need to be adjusted slightly.

	In batch plants, each cold feed bin is charged with a different aggregate fraction. Again, two cold feed bins may contain the same aggregate fraction. Aggregate is drawn from each cold feed bin with the corresponding percentages indicated on the JMF and combined onto one conveyor.		In batch plants, each cold feed bin is charged with a different aggregate fraction. Again, two cold feed bins may contain the same aggregate fraction. Aggregate is drawn from each cold feed bin with the corresponding percentages indicated on the JMF and combined onto one conveyor.

	The aggregate is then carried through the drier and to the top of the plant where it is rescreened on the screen deck, separated into a maximum of four different sizes, and stored in the hot bins. Generally, the No. 1 bin contains the finest aggregate and the No. 4 bin contains the coarsest aggregate. Obviously, the gradations of the aggregate in the hot bins will not be the same as the virgin aggregates. For this reason different hot bin percentages must be used.		The aggregate is then carried through the drier and to the top of the plant where it is rescreened on the screen deck, separated into a maximum of four different sizes, and stored in the hot bins. Generally, the No. 1 bin contains the finest aggregate and the No. 4 bin contains the coarsest aggregate. Obviously, the gradations of the aggregate in the hot bins will not be the same as the virgin aggregates. For this reason different hot bin percentages must be used.

	The contractor is responsible for determining the percentages of aggregate drawn from each hot bin in order to produce the combined gradation, within tolerances, shown on the JMF. However, the contractor may use the following process to determine a starting point for the hot bin percentages. First, the plant is emptied and the cold feed bins, which are set according to the		The contractor is responsible for determining the percentages of aggregate drawn from each hot bin in order to produce the combined gradation, within tolerances, shown on the JMF. However, the contractor may use the following process to determine a starting point for the hot bin percentages. First, the plant is emptied and the cold feed bins, which are set according to the percentages on the JMF, are charged. Then the plant is run long enough to charge the hot bins with a sufficient amount of aggregate. The plant is stopped and the aggregate from one hot bin is weighed and recorded. The same procedure is done for the remaining hot bins. All of the individual weights are added together to obtain a total. Finally, each individual weight is divided by the total weight to determine the percentage for each hot bin. These are the initial hot bin percentages and may need to be adjusted slightly. Using this procedure will help assure that the plant is producing in a balanced manner. Since the JMF percentages are based on 100% aggregate and the plant operates on the basis of 100% mix, the plant percentages will need to be calculated. Multiply the hot bin percentages by the percent mineral aggregate (in decimal form) shown in the lower right-hand corner of the JMF.
	percentages on the JMF, are charged. Then the plant is run long enough to charge the hot bins
	with a sufficient amount of aggregate. The plant is stopped and the aggregate from one hot bin is weighed and recorded. The same procedure is done for the remaining hot bins. All of the individual weights are added together to obtain a total. Finally, each individual weight is divided by the total weight to determine the percentage for each hot bin. These are the initial hot bin percentages and may need to be adjusted slightly. Using this procedure will help assure that the plant is producing in a balanced manner. Since the JMF percentages are based on 100% aggregate and the plant operates on the basis of 100% mix, the plant percentages will need to be calculated. Multiply the hot bin percentages by the percent mineral aggregate (in decimal form) shown in the lower right-hand corner of the JMF.

	The plant percentages, including the binder percentage, should add up to 100%. Due to rounding, the percentages may need to be adjusted slightly. To determine the exact amount of aggregate from each hot bin needed in a batch, the weight of the batch is multiplied by the corresponding plant percentage. To determine the exact amount of binder needed in a batch, the weight of the batch is multiplied by the percent binder content from the JMF.		The plant percentages, including the binder percentage, should add up to 100%. Due to rounding, the percentages may need to be adjusted slightly. To determine the exact amount of aggregate from each hot bin needed in a batch, the weight of the batch is multiplied by the corresponding plant percentage. To determine the exact amount of binder needed in a batch, the weight of the batch is multiplied by the percent binder content from the JMF.

Smithk: Per CM, removed archaic SiteManager info and replaced with AASHTOWARE info

2021-10-01T14:28:30Z

Per CM, removed archaic SiteManager info and replaced with AASHTOWARE info

← Older revision		Revision as of 09:28, 1 October 2021
Line 150:		Line 150:
	(23) Test the QC split sample at a minimum of once every 5 production days.		(23) Test the QC split sample at a minimum of once every 5 production days.

	(24) Assign ~~a SiteManager~~ ID number to all samples.		(24) Assign an AASHTOWARE Project (AWP) ID number to all samples.

	(25) Perform density tests and report the results to the represented production.		(25) Perform density tests and report the results to the represented production.
Line 157:		Line 157:
	the Asphalt Plant Inspector’s Worksheet (APIW).		the Asphalt Plant Inspector’s Worksheet (APIW).

	(27) Assign ~~SiteManager~~ ID numbers to any additional samples taken for the Central		(27) Assign AWP ID numbers to any additional samples taken for the Central
	Laboratory and record them in the plant diary.		Laboratory and record them in the plant diary.

Line 186:		Line 186:
	(38) Keep personal diary up to date.		(38) Keep personal diary up to date.

	(39) Enter all sampling and testing information into ~~SiteManager~~ in a timely manner.		(39) Enter all sampling and testing information into AWP in a timely manner.

	==460.3.3 Supplies==		==460.3.3 Supplies==
Line 213:		Line 213:

	==460.3.4 Asphalt Plant Inspector’s Worksheet (APIW) and Pay Factor Worksheet==		==460.3.4 Asphalt Plant Inspector’s Worksheet (APIW) and Pay Factor Worksheet==
	The Asphalt Plant Inspector’s Worksheet serves as a daily report and will be prepared each day the plant produces mix for MoDOT projects. A separate report will be prepared for each mix produced. A detailed description of the APIW and Pay Factor Worksheets can be found in the		The Asphalt Plant Inspector’s Worksheet serves as a daily report and will be prepared each day the plant produces mix for MoDOT projects. A separate report will be prepared for each mix produced. A detailed description of the APIW and Pay Factor Worksheets can be found in the [[:Category:101 Standard Forms#AASHTOWare Project Quick Reference Guides (QRGs)\|AWP Quick Reference Guide]]. Reports will be downloaded in a timely manner.
	~~SiteManager~~ Quick Reference Guide ~~in Lotus Notes~~. Reports will be downloaded in a timely
	manner.

	==400.3.5 Plant Diaries==		==400.3.5 Plant Diaries==
Line 259:		Line 257:
	:e. Density.		:e. Density.

	(17) Record all ~~SiteManager~~ sample ID numbers.		(17) Record all AWP sample ID numbers.

	(18) Record when visited by an IAS inspector.		(18) Record when visited by an IAS inspector.
Line 342:		Line 340:
	When any of the above occurs, immediately ship the accumulated samples to the Central Laboratory. If a possible binder related problem is observed, notify the Central Laboratory immediately so that the samples can be given priority when they arrive. The weekly gathering of samples does not have to begin on Sunday. For example, if the district ships to the Central Laboratory on Thursday, then the samples should be collected from Thursday through Wednesday so they may be shipped at the earliest possible time after collection.		When any of the above occurs, immediately ship the accumulated samples to the Central Laboratory. If a possible binder related problem is observed, notify the Central Laboratory immediately so that the samples can be given priority when they arrive. The weekly gathering of samples does not have to begin on Sunday. For example, if the district ships to the Central Laboratory on Thursday, then the samples should be collected from Thursday through Wednesday so they may be shipped at the earliest possible time after collection.

	Enter ~~a SiteManager~~ record only for the first binder sample taken for each mix number used on a project. All binder samples for that mix number on that project will be reported to that ~~SiteManager~~ record. All testing performed on the binder samples taken for that mix number from that project will be reported by the Central Laboratory in that ~~SiteManager~~ record by adding additional test templates for each succeeding sample. The Central Laboratory will select random samples from each shipment for testing. If a test fails, all samples from the shipment will be tested to determine the extent of the problem. The project will be notified of failures as soon as possible.		Enter an AWP record only for the first binder sample taken for each mix number used on a project. All binder samples for that mix number on that project will be reported to that AWP record. All testing performed on the binder samples taken for that mix number from that project will be reported by the Central Laboratory in that AWP record by adding additional test templates for each succeeding sample. The Central Laboratory will select random samples from each shipment for testing. If a test fails, all samples from the shipment will be tested to determine the extent of the problem. The project will be notified of failures as soon as possible.

	The appropriate binder grade for reporting the material in ~~SiteManager~~ can be determined from looking at the “In-Line Grade” listed on the mix design. The in-line grade is the grade of the asphalt once all of the additives and modifiers have been incorporated and is the grade which should be listed when reporting a production binder sample. If using a binder which has been modified by ground tire rubber (GTR), use the material code which has a “R” at the end. The material name will list “GTR” next to the binder grade.		The appropriate binder grade for reporting the material in AWP can be determined from looking at the “In-Line Grade” listed on the mix design. The in-line grade is the grade of the asphalt once all of the additives and modifiers have been incorporated and is the grade which should be listed when reporting a production binder sample. If using a binder which has been modified by ground tire rubber (GTR), use the material code which has a “R” at the end. The material name will list “GTR” next to the binder grade.

	When sampling from the valve on a truck, a storage tank, or the plants’ binder supply line, discard enough material to drain all lines of any material already present. This is important to ensure that the sample is representative of the material being sampled and does not include any material from previous shipments. All PG binders must meet specifications after the introduction of liquid anti-strip or any other additives. Therefore, ensure that the samples are taken after the introduction of any additives. The inspector should either perform the sampling or observe the plant personnel conducting the sampling. Before sampling, make sure the can is clean and dry. Samples containing even small amounts of water usually cannot be tested and may also pose a hazard for the Central Laboratory personnel during the heating process.		When sampling from the valve on a truck, a storage tank, or the plants’ binder supply line, discard enough material to drain all lines of any material already present. This is important to ensure that the sample is representative of the material being sampled and does not include any material from previous shipments. All PG binders must meet specifications after the introduction of liquid anti-strip or any other additives. Therefore, ensure that the samples are taken after the introduction of any additives. The inspector should either perform the sampling or observe the plant personnel conducting the sampling. Before sampling, make sure the can is clean and dry. Samples containing even small amounts of water usually cannot be tested and may also pose a hazard for the Central Laboratory personnel during the heating process.
Line 352:		Line 350:
	Label the can with the following information, keeping in mind that many samples will be identified only by the information on the sample container:		Label the can with the following information, keeping in mind that many samples will be identified only by the information on the sample container:

	(1) ~~SiteManager~~ ID number that has been assigned to that mix number for that project.		(1) AWP ID number that has been assigned to that mix number for that project.

	(2) Inspector’s ~~SiteManager~~ UserID.		(2) Inspector’s AWP UserID.

	(3) Date sampled.		(3) Date sampled.
Line 364:		Line 362:
	(6) Mix number.		(6) Mix number.

	All ~~SiteManager~~ records for a mix will be authorized by the Central Laboratory with the status “Informational” unless a sample fails to meet specifications. If a sample fails, that ~~SiteManager~~ record will be authorized with the status “Rejected”. The Central Laboratory will retain all samples for approximately 1 year for additional testing, if necessary.		All AWP records for a mix will be authorized by the Central Laboratory with the status “Informational” unless a sample fails to meet specifications. If a sample fails, that AWP record will be authorized with the status “Rejected”. The Central Laboratory will retain all samples for approximately 1 year for additional testing, if necessary.
	<div id="If the sample and check"></div>		<div id="If the sample and check"></div>
	If the sample and check testing fail to meet the specification, the following penalties may apply:		If the sample and check testing fail to meet the specification, the following penalties may apply:

Smithk: /* 460.3.13 Asphalt Binder Sampling and Test Results */ minor editorial correction

2019-12-12T13:47:09Z

460.3.13 Asphalt Binder Sampling and Test Results: minor editorial correction

← Older revision		Revision as of 08:47, 12 December 2019
Line 372:		Line 372:
	{\| border="1" class="wikitable" style="margin: 1em auto 1em auto" style="text-align:center"		{\| border="1" class="wikitable" style="margin: 1em auto 1em auto" style="text-align:center"
	\|+		\|+
	! style="background:#BEBEBE" \|Original DSR!! style="background:#BEBEBE" colspan="3"\|Jnr ~~RFTO~~* !! style="background:#BEBEBE" \|Penalty		! style="background:#BEBEBE" \|Original DSR!! style="background:#BEBEBE" colspan="3"\|Jnr RTFO* !! style="background:#BEBEBE" \|Penalty
	\|-		\|-
	\|DSR > 0.90\|\|colspan="3"\| Jnr < Max + 0.1 \|\|No Penalty		\|DSR > 0.90\|\|colspan="3"\| Jnr < Max + 0.1 \|\|No Penalty

EPGsysop: Per CM, new guidance for handling failing binder samples on projects and when additional testing which may take place. Also, recommendations for penalties for failing binders at the different levels.

2017-04-25T18:59:30Z

Per CM, new guidance for handling failing binder samples on projects and when additional testing which may take place. Also, recommendations for penalties for failing binders at the different levels.

← Older revision		Revision as of 13:59, 25 April 2017
Line 333:		Line 333:
	period of time, accounting for the quantity on hand.		period of time, accounting for the quantity on hand.

	==460.3.13 Asphalt Binder Sampling==		==460.3.13 Asphalt Binder Sampling and Test Results==
	Take a daily sample, consisting of three one-pint friction top cans of material, from the binder line supplying the mixer. All three cans should be labeled identically. One can should then be given immediately to the producer for testing or retention. The second can will be collected and shipped to the MoDOT central lab for testing as defined below. The third can should be retained at the district level until the sample ID containing the related binder has been accepted at the Central Lab. In the event that a sample fails to meet the minimum criteria after testing, the third can be used for further evaluation of the material as needed. If the plant produces two or more mixes with the same PG binder grade, only one sample is required to represent that day’s production. If the plant produces more than one mix in a day and each mix requires different PG binder grades, one sample is required for each binder used that day. A can from the first daily sample should be sent to the central lab immediate for testing. Following the first day’s production, retain all of the daily binder samples on the project for one week until one of the following occurs:		Take a daily sample, consisting of three one-pint friction top cans of material, from the binder line supplying the mixer. All three cans should be labeled identically. One can should then be given immediately to the producer for testing or retention. The second can will be collected and shipped to the MoDOT central lab for testing as defined below. The third can should be retained at the district level until the sample ID containing the related binder has been accepted at the Central Lab. In the event that a sample fails to meet the minimum criteria after testing, the third can be used for further evaluation of the material as needed. If the plant produces two or more mixes with the same PG binder grade, only one sample is required to represent that day’s production. If the plant produces more than one mix in a day and each mix requires different PG binder grades, one sample is required for each binder used that day. A can from the first daily sample should be sent to the central lab immediate for testing. Following the first day’s production, retain all of the daily binder samples on the project for one week until one of the following occurs:

Line 340:		Line 340:
	*A possible binder related problem is observed.		*A possible binder related problem is observed.

	When any of the above occurs, immediately ship the accumulated samples to the Central		When any of the above occurs, immediately ship the accumulated samples to the Central Laboratory. If a possible binder related problem is observed, notify the Central Laboratory immediately so that the samples can be given priority when they arrive. The weekly gathering of samples does not have to begin on Sunday. For example, if the district ships to the Central Laboratory on Thursday, then the samples should be collected from Thursday through Wednesday so they may be shipped at the earliest possible time after collection.
	Laboratory. If a possible binder related problem is observed, notify the Central Laboratory immediately so that the samples can be given priority when they arrive. The weekly gathering of samples does not have to begin on Sunday. For example, if the district ships to the Central Laboratory on Thursday, then the samples should be collected from Thursday through Wednesday so they may be shipped at the earliest possible time after collection.

	Enter a SiteManager record only for the first binder sample taken for each mix number used on a project. All binder samples for that mix number on that project will be reported to that SiteManager record. All testing performed on the binder samples taken for that mix number from that project will be reported by the Central Laboratory in that SiteManager record by adding additional test templates for each succeeding sample. The Central Laboratory will select random samples from each shipment for testing. If a test fails, all samples from the shipment will be tested to determine the extent of the problem. The project will be notified of failures as soon as possible.		Enter a SiteManager record only for the first binder sample taken for each mix number used on a project. All binder samples for that mix number on that project will be reported to that SiteManager record. All testing performed on the binder samples taken for that mix number from that project will be reported by the Central Laboratory in that SiteManager record by adding additional test templates for each succeeding sample. The Central Laboratory will select random samples from each shipment for testing. If a test fails, all samples from the shipment will be tested to determine the extent of the problem. The project will be notified of failures as soon as possible.

	The appropriate binder grade for reporting the material in SiteManager can be determined from looking at the “In-Line Grade” listed on the mix design. The in-line grade is the grade of the asphalt once all of the additives and modifiers have been incorporated and is the grade which should be listed when reporting a production binder sample. If using a binder which has been modified by ground tire rubber (GTR), use the ~~matieral~~ code which has a “R” at the end. The material name will list “GTR” next to the binder grade.		The appropriate binder grade for reporting the material in SiteManager can be determined from looking at the “In-Line Grade” listed on the mix design. The in-line grade is the grade of the asphalt once all of the additives and modifiers have been incorporated and is the grade which should be listed when reporting a production binder sample. If using a binder which has been modified by ground tire rubber (GTR), use the material code which has a “R” at the end. The material name will list “GTR” next to the binder grade.

	When sampling from the valve on a truck, a storage tank, or the plants’ binder supply line, discard enough material to drain all lines of any material already present. This is important to ensure that the sample is representative of the material being sampled and does not include any material from previous shipments. All PG binders must meet specifications after the introduction of liquid anti-strip or any other additives. Therefore, ensure that the samples are taken after the introduction of any additives. The inspector should either perform the sampling or observe the plant personnel conducting the sampling. Before sampling, make sure the can is clean and dry. Samples containing even small amounts of water usually cannot be tested and may also pose a hazard for the Central Laboratory personnel during the heating process.		When sampling from the valve on a truck, a storage tank, or the plants’ binder supply line, discard enough material to drain all lines of any material already present. This is important to ensure that the sample is representative of the material being sampled and does not include any material from previous shipments. All PG binders must meet specifications after the introduction of liquid anti-strip or any other additives. Therefore, ensure that the samples are taken after the introduction of any additives. The inspector should either perform the sampling or observe the plant personnel conducting the sampling. Before sampling, make sure the can is clean and dry. Samples containing even small amounts of water usually cannot be tested and may also pose a hazard for the Central Laboratory personnel during the heating process.

	Leave approximately ½ in. of free space in the can to allow for proper sealing. However, do not substantially under fill the can. As soon as the sample has been taken, the lid should be secured tightly. Do not allow the can to sit in the rain and do not clean the can by dipping it in solvent. Allowing a hot can of binder to sit in the rain or submerging the can in solvent can create a vacuum inside the can that may draw the ~~binder~~ past the friction seal as the binder cools. When necessary, the outside of the can should be cleaned with a rag dipped in solvent, taking care not to let the solvent accumulate near the friction seal.		Leave approximately ½ in. of free space in the can to allow for proper sealing. However, do not substantially under fill the can. As soon as the sample has been taken, the lid should be secured tightly. Do not allow the can to sit in the rain and do not clean the can by dipping it in solvent. Allowing a hot can of binder to sit in the rain or submerging the can in solvent can create a vacuum inside the can that may draw the contaminant past the friction seal as the binder cools. When necessary, the outside of the can should be cleaned with a rag dipped in solvent, taking care not to let the solvent accumulate near the friction seal.

	Label the can with the following information, keeping in mind that many samples will be		Label the can with the following information, keeping in mind that many samples will be identified only by the information on the sample container:
	identified only by the information on the sample container:

	(1) SiteManager ID number that has been assigned to that mix number for that project.		(1) SiteManager ID number that has been assigned to that mix number for that project.
Line 367:		Line 365:

	All SiteManager records for a mix will be authorized by the Central Laboratory with the status “Informational” unless a sample fails to meet specifications. If a sample fails, that SiteManager record will be authorized with the status “Rejected”. The Central Laboratory will retain all samples for approximately 1 year for additional testing, if necessary.		All SiteManager records for a mix will be authorized by the Central Laboratory with the status “Informational” unless a sample fails to meet specifications. If a sample fails, that SiteManager record will be authorized with the status “Rejected”. The Central Laboratory will retain all samples for approximately 1 year for additional testing, if necessary.
			<div id="If the sample and check"></div>
			If the sample and check testing fail to meet the specification, the following penalties may apply:

			For AASHTO M 320 graded binders the DSR values are based on the original binder. Failing samples will be tested to determine the high temperature true grading. For AASHTO M332 graded binders, the Jnr values are based on rolling thin-film oven, RTFO, aged binder.
			<center>
			{\| border="1" class="wikitable" style="margin: 1em auto 1em auto" style="text-align:center"
			\|+
			! style="background:#BEBEBE" \|Original DSR!! style="background:#BEBEBE" colspan="3"\|Jnr RFTO* !! style="background:#BEBEBE" \|Penalty
			\|-
			\|DSR > 0.90\|\|colspan="3"\| Jnr < Max + 0.1 \|\|No Penalty
			\|-
			\|True Grade Temperature\|\| Gr. E\|\| Gr. V \|\| Gr. H \|\|
			\|-
			\|< 2° below grade\|\| < 0.6\|\| < 1.1\|\| < 2.2 \|\|No Penalty
			\|-
			\|> 2° & < 4° below grade\|\| > 0.6 & < 0.7\|\| > 1.1 & < 1.3\|\| > 2.1 & < 2.7 \|\|3% of Mix Unit Price**
			\|-
			\|> 4° & < 6° below grade\|\| > 0.7 & < 1.0\|\| > 1.3 & < 2.0\|\| > 2.7 & < 4.0 \|\|10% of Mix Unit Price**
			\|-
			\|> 6° below grade\|\| > 1.0\|\| > 2.0\|\| >4.0\|\| 16% of Mix Unit Price**
			\|-
			\|align="left" colspan="5"\|'''*''' For Gr. S, use true grading temperatures.
			\|-
			\|align="left" colspan="5"\|'''**''' Extraction and grading at the high temperature may be performed to prove acceptable mixture.
			\|}
			</center>
			Consult the Field Materials Office for special circumstances.

	==460.3.14 Asphalt Binder Content==		==460.3.14 Asphalt Binder Content==

Smithk: /* 460.3.13 Asphalt Binder Sampling */ Per CM, submission of Initial Daily Binder Sample

2016-12-05T19:17:11Z

460.3.13 Asphalt Binder Sampling: Per CM, submission of Initial Daily Binder Sample

← Older revision		Revision as of 14:17, 5 December 2016
Line 334:		Line 334:

	==460.3.13 Asphalt Binder Sampling==		==460.3.13 Asphalt Binder Sampling==
	Take a daily sample, consisting of three one-pint friction top cans of material, from the binder line supplying the mixer. All three cans should be labeled identically. One can should then be given immediately to the producer for testing or retention. The second can will be collected and shipped to the MoDOT central lab for testing as defined below. The third can should be retained at the district level until the sample ID containing the related binder has been accepted at the Central Lab. In the event that a sample fails to meet the minimum criteria after testing, the third can be used for further evaluation of the material as needed. If the plant produces two or more mixes with the same PG binder grade, only one sample is required to represent that day’s production. If the plant produces more than one mix in a day and each mix requires different PG binder grades, one sample is required for each binder used that day. ~~Retain~~ all of the daily binder samples on the project for one week until one of the following occurs:		Take a daily sample, consisting of three one-pint friction top cans of material, from the binder line supplying the mixer. All three cans should be labeled identically. One can should then be given immediately to the producer for testing or retention. The second can will be collected and shipped to the MoDOT central lab for testing as defined below. The third can should be retained at the district level until the sample ID containing the related binder has been accepted at the Central Lab. In the event that a sample fails to meet the minimum criteria after testing, the third can be used for further evaluation of the material as needed. If the plant produces two or more mixes with the same PG binder grade, only one sample is required to represent that day’s production. If the plant produces more than one mix in a day and each mix requires different PG binder grades, one sample is required for each binder used that day. A can from the first daily sample should be sent to the central lab immediate for testing. Following the first day’s production, retain all of the daily binder samples on the project for one week until one of the following occurs:

	*The weekly binder samples have been accumulated.		*The weekly binder samples have been accumulated.

Smithk: /* 460.3.13 Asphalt Binder Sampling */Per CM, collection of a 3rd pt. can of binder as retained sample is appropriate procedure. If a 3rd party test is needed, it can be performed on retained sample

2016-08-24T19:54:33Z

460.3.13 Asphalt Binder Sampling: Per CM, collection of a 3rd pt. can of binder as retained sample is appropriate procedure. If a 3rd party test is needed, it can be performed on retained sample

← Older revision		Revision as of 14:54, 24 August 2016
Line 334:		Line 334:

	==460.3.13 Asphalt Binder Sampling==		==460.3.13 Asphalt Binder Sampling==
	Take a daily sample, consisting of ~~two~~ one-pint friction top cans of material, from the binder		Take a daily sample, consisting of three one-pint friction top cans of material, from the binder line supplying the mixer. All three cans should be labeled identically. One can should then be given immediately to the producer for testing or retention. The second can will be collected and shipped to the MoDOT central lab for testing as defined below. The third can should be retained at the district level until the sample ID containing the related binder has been accepted at the Central Lab. In the event that a sample fails to meet the minimum criteria after testing, the third can be used for further evaluation of the material as needed. If the plant produces two or more mixes with the same PG binder grade, only one sample is required to represent that day’s production. If the plant produces more than one mix in a day and each mix requires different PG binder grades, one sample is required for each binder used that day. Retain all of the daily binder samples on the project for one week until one of the following occurs:
	line supplying the mixer ~~to submit to the Central Laboratory~~. ~~One can is to~~ be ~~retained and one can,~~ labeled identically ~~in accordance with this section, will~~ be given to the producer for ~~their immediate~~ testing or retention. If the plant produces two or more mixes with the same PG binder grade, only one sample is required to represent that day’s production. If the plant produces more than one mix in a day and each mix requires different PG binder grades, one sample is required for each binder used that day. Retain all of the daily binder samples on the project for one week until one of the following occurs:

	*The weekly binder samples have been accumulated.		*The weekly binder samples have been accumulated.
Line 346:		Line 345:
	Enter a SiteManager record only for the first binder sample taken for each mix number used on a project. All binder samples for that mix number on that project will be reported to that SiteManager record. All testing performed on the binder samples taken for that mix number from that project will be reported by the Central Laboratory in that SiteManager record by adding additional test templates for each succeeding sample. The Central Laboratory will select random samples from each shipment for testing. If a test fails, all samples from the shipment will be tested to determine the extent of the problem. The project will be notified of failures as soon as possible.		Enter a SiteManager record only for the first binder sample taken for each mix number used on a project. All binder samples for that mix number on that project will be reported to that SiteManager record. All testing performed on the binder samples taken for that mix number from that project will be reported by the Central Laboratory in that SiteManager record by adding additional test templates for each succeeding sample. The Central Laboratory will select random samples from each shipment for testing. If a test fails, all samples from the shipment will be tested to determine the extent of the problem. The project will be notified of failures as soon as possible.

	When sampling from the valve on a truck, a storage tank, or the plants’ binder supply line, discard enough material to drain all lines of any material already present. This is important to ensure that the sample is representative of the material being sampled and does not include any material from previous shipments. All PG binders must meet specifications after the introduction of ~~any~~ liquid anti-strip additives. Therefore, ensure that the samples are taken after the introduction of any ~~liquid anti-strip~~ additives. The inspector should either perform the sampling or observe the plant personnel conducting the sampling. Before sampling, make sure the can is clean and dry. Samples containing even small amounts of water usually cannot be tested and may also pose a hazard for the Central Laboratory personnel during the heating process.		The appropriate binder grade for reporting the material in SiteManager can be determined from looking at the “In-Line Grade” listed on the mix design. The in-line grade is the grade of the asphalt once all of the additives and modifiers have been incorporated and is the grade which should be listed when reporting a production binder sample. If using a binder which has been modified by ground tire rubber (GTR), use the matieral code which has a “R” at the end. The material name will list “GTR” next to the binder grade.

			When sampling from the valve on a truck, a storage tank, or the plants’ binder supply line, discard enough material to drain all lines of any material already present. This is important to ensure that the sample is representative of the material being sampled and does not include any material from previous shipments. All PG binders must meet specifications after the introduction of liquid anti-strip or any other additives. Therefore, ensure that the samples are taken after the introduction of any additives. The inspector should either perform the sampling or observe the plant personnel conducting the sampling. Before sampling, make sure the can is clean and dry. Samples containing even small amounts of water usually cannot be tested and may also pose a hazard for the Central Laboratory personnel during the heating process.

	Leave approximately ½ in. of free space in the can to allow for proper sealing. However, do not substantially under fill the can. As soon as the sample has been taken, the lid should be secured tightly. Do not allow the can to sit in the rain and do not clean the can by dipping it in solvent. Allowing a hot can of binder to sit in the rain or submerging the can in solvent can create a vacuum inside the can that may draw the binder past the friction seal as the binder cools. When necessary, the outside of the can should be cleaned with a rag dipped in solvent, taking care not to let the solvent accumulate near the friction seal.		Leave approximately ½ in. of free space in the can to allow for proper sealing. However, do not substantially under fill the can. As soon as the sample has been taken, the lid should be secured tightly. Do not allow the can to sit in the rain and do not clean the can by dipping it in solvent. Allowing a hot can of binder to sit in the rain or submerging the can in solvent can create a vacuum inside the can that may draw the binder past the friction seal as the binder cools. When necessary, the outside of the can should be cleaned with a rag dipped in solvent, taking care not to let the solvent accumulate near the friction seal.

Smithk: /* 460.3.16 Density */ Per CM, updated Asphalt Roadway Report link

2016-07-06T16:15:20Z

460.3.16 Density: Per CM, updated Asphalt Roadway Report link

← Older revision		Revision as of 11:15, 6 July 2016
Line 476:		Line 476:
	The density is calculated by dividing the specific gravity of the core (G<sub>mc</sub>) taken from the roadway by the theoretical maximum specific gravity (G<sub>mm</sub>). For BB and BP mixes, the G<sub>mm</sub> of the mix is shown in the lower left-hand corner of the JMF. For Superpave mixes, the G<sub>mm</sub> of the mix is determined by AASHTO T209. The test result from the corresponding production period is then used to calculate the density of the core.		The density is calculated by dividing the specific gravity of the core (G<sub>mc</sub>) taken from the roadway by the theoretical maximum specific gravity (G<sub>mm</sub>). For BB and BP mixes, the G<sub>mm</sub> of the mix is shown in the lower left-hand corner of the JMF. For Superpave mixes, the G<sub>mm</sub> of the mix is determined by AASHTO T209. The test result from the corresponding production period is then used to calculate the density of the core.

	All test data will be recorded in the APIW for the represented production. Also, the applicable portions of the corresponding [[~~Media~~:~~460 Figure Asphalt Roadway Report~~.~~pdf~~\|Asphalt Roadway Report]] should be completed and returned to the roadway inspector.		All test data will be recorded in the APIW for the represented production. Also, the applicable portions of the corresponding [[media:106.4.2.6.xls\|Asphalt Roadway Report]] should be completed and returned to the roadway inspector.

	One or more of the following factors may affect the test results. The cores should be free of tack and all other foreign material. The cores may need to be separated from previous lifts. This should be done in a manner that will not harm the core. The cores should be cooled to room temperature. The scale should be tared before each weight is obtained. When weighing in water, the suspension apparatus should be centered on the scale and hang freely in the container, the core should be completely submerged, and the water in the container should be maintained within the proper temperature range and at the level of the overflow outlet. The water should be potable. The cores should not be stacked in the basket because this may trap air bubbles. Also, all air bubbles should be removed from the basket before performing the test.		One or more of the following factors may affect the test results. The cores should be free of tack and all other foreign material. The cores may need to be separated from previous lifts. This should be done in a manner that will not harm the core. The cores should be cooled to room temperature. The scale should be tared before each weight is obtained. When weighing in water, the suspension apparatus should be centered on the scale and hang freely in the container, the core should be completely submerged, and the water in the container should be maintained within the proper temperature range and at the level of the overflow outlet. The water should be potable. The cores should not be stacked in the basket because this may trap air bubbles. Also, all air bubbles should be removed from the basket before performing the test.

Smithk: updated links

2016-06-09T14:18:34Z

updated links

Smithk: /* 460.3.11 Reclaimed Asphalt Pavement (RAP) */Per Phys Lab, updated test number since TP58 is no longer a provisional standard

2014-11-25T13:13:07Z

460.3.11 Reclaimed Asphalt Pavement (RAP): Per Phys Lab, updated test number since TP58 is no longer a provisional standard

← Older revision		Revision as of 08:13, 25 November 2014
Line 308:		Line 308:

	==460.3.11 Reclaimed Asphalt Pavement (RAP)==		==460.3.11 Reclaimed Asphalt Pavement (RAP)==
	RAP material may or may not come from the MoDOT system. If the material does not come from the MoDOT system, the contractor shall perform Micro-Deval testing, in accordance with AASHTO ~~TP58~~, at a frequency of once every 1500 tons. If the material has a loss greater than 5% from the virgin aggregate, it cannot be used. At a minimum of once per project or stockpile, for stockpiles built to serve multiple projects, a sample of the RAP material will be sent to the Central Laboratory for testing. Micro-Deval testing will be waived if the material comes from the MoDOT system or state roadway of an adjoining state. The material is subject to the deleterious requirements of [http://www.modot.state.mo.us/business/standards_and_specs/Sec1002.pdf Standard Specification Section 1002.2.1].		RAP material may or may not come from the MoDOT system. If the material does not come from the MoDOT system, the contractor shall perform Micro-Deval testing, in accordance with AASHTO T 327, at a frequency of once every 1500 tons. If the material has a loss greater than 5% from the virgin aggregate, it cannot be used. At a minimum of once per project or stockpile, for stockpiles built to serve multiple projects, a sample of the RAP material will be sent to the Central Laboratory for testing. Micro-Deval testing will be waived if the material comes from the MoDOT system or state roadway of an adjoining state. The material is subject to the deleterious requirements of [http://www.modot.state.mo.us/business/standards_and_specs/Sec1002.pdf Standard Specification Section 1002.2.1].

	For the purposes of gradation control, the material will be sampled from the RAP feeding system on the plant. The contractor shall determine the gradation of the RAP at a minimum of once per day, removing the asphalt coating by either extraction or binder ignition. The results of the sieve analysis are used to determine compliance of the combined gradation with the specifications.		For the purposes of gradation control, the material will be sampled from the RAP feeding system on the plant. The contractor shall determine the gradation of the RAP at a minimum of once per day, removing the asphalt coating by either extraction or binder ignition. The results of the sieve analysis are used to determine compliance of the combined gradation with the specifications.

← Older revision		Revision as of 09:18, 9 June 2016
Line 277:		Line 277:

	==460.3.7 Field Laboratory==		==460.3.7 Field Laboratory==
	The contractor shall provide a Type 3 Field Laboratory in accordance with [~~http://~~http://www.modot.~~state.mo.us~~/business/standards_and_specs/~~Sec0601~~.pdf Standard Specification Section 601]. By definition, the type 3 lab contains all of the components of the type 1 and 2 labs. In order to comply with the requirements of the type 3 lab, the contractor may elect to provide two separate labs. As long as the plant operations can be observed from a type 2 lab, the type 3 lab may be located anywhere that is convenient to the project.		The contractor shall provide a Type 3 Field Laboratory in accordance with [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=9 Standard Specification Section 601]. By definition, the type 3 lab contains all of the components of the type 1 and 2 labs. In order to comply with the requirements of the type 3 lab, the contractor may elect to provide two separate labs. As long as the plant operations can be observed from a type 2 lab, the type 3 lab may be located anywhere that is convenient to the project.

	==460.3.8 Temperature Control==		==460.3.8 Temperature Control==
Line 303:		Line 303:
	==460.3.10 Liquid Anti-Strip Additives==		==460.3.10 Liquid Anti-Strip Additives==
	Liquid anti-strip additives are typically used to improve the adhesion of the binder to the		Liquid anti-strip additives are typically used to improve the adhesion of the binder to the
	surface of the aggregate and to increase resistance to moisture damage (stripping). Type I and II liquid anti-strip additives shall be in accordance with [http://www.modot.~~state.mo.us~~/business/standards_and_specs/~~Sec1071~~.pdf Standard Specification Section 1071.5]. Type I additives are blended into the binder using an in-line mixer and Type II additives are sprayed onto the combined cold feed aggregate. Both must be added uniformly and continuously at the dosage rate indicated on the JMF. The brand name and manufacturer will be shown on the JMF and must be included on the qualified list.		surface of the aggregate and to increase resistance to moisture damage (stripping). Type I and II liquid anti-strip additives shall be in accordance with [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=14 Standard Specification Section 1071.5]. Type I additives are blended into the binder using an in-line mixer and Type II additives are sprayed onto the combined cold feed aggregate. Both must be added uniformly and continuously at the dosage rate indicated on the JMF. The brand name and manufacturer will be shown on the JMF and must be included on the qualified list.

	Liquid anti-strip additives can be used in all mixes. However, they will most likely only be used in Superpave mixes because of the cost.		Liquid anti-strip additives can be used in all mixes. However, they will most likely only be used in Superpave mixes because of the cost.

	==460.3.11 Reclaimed Asphalt Pavement (RAP)==		==460.3.11 Reclaimed Asphalt Pavement (RAP)==
	RAP material may or may not come from the MoDOT system. If the material does not come from the MoDOT system, the contractor shall perform Micro-Deval testing, in accordance with AASHTO T 327, at a frequency of once every 1500 tons. If the material has a loss greater than 5% from the virgin aggregate, it cannot be used. At a minimum of once per project or stockpile, for stockpiles built to serve multiple projects, a sample of the RAP material will be sent to the Central Laboratory for testing. Micro-Deval testing will be waived if the material comes from the MoDOT system or state roadway of an adjoining state. The material is subject to the deleterious requirements of [http://www.modot.~~state.mo.us~~/business/standards_and_specs/~~Sec1002~~.pdf Standard Specification Section 1002.2.1].		RAP material may or may not come from the MoDOT system. If the material does not come from the MoDOT system, the contractor shall perform Micro-Deval testing, in accordance with AASHTO T 327, at a frequency of once every 1500 tons. If the material has a loss greater than 5% from the virgin aggregate, it cannot be used. At a minimum of once per project or stockpile, for stockpiles built to serve multiple projects, a sample of the RAP material will be sent to the Central Laboratory for testing. Micro-Deval testing will be waived if the material comes from the MoDOT system or state roadway of an adjoining state. The material is subject to the deleterious requirements of [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=14 Standard Specification Section 1002.2.1].

	For the purposes of gradation control, the material will be sampled from the RAP feeding system on the plant. The contractor shall determine the gradation of the RAP at a minimum of once per day, removing the asphalt coating by either extraction or binder ignition. The results of the sieve analysis are used to determine compliance of the combined gradation with the specifications.		For the purposes of gradation control, the material will be sampled from the RAP feeding system on the plant. The contractor shall determine the gradation of the RAP at a minimum of once per day, removing the asphalt coating by either extraction or binder ignition. The results of the sieve analysis are used to determine compliance of the combined gradation with the specifications.
Line 322:		Line 322:
	==460.3.12 Asphalt Binder==		==460.3.12 Asphalt Binder==
	It is important that the binder is circulated through the feed lines and the storage tank(s) so		It is important that the binder is circulated through the feed lines and the storage tank(s) so
	that the temperature of the binder is kept uniform and within the mixing ranges in [http://www.modot.~~state.mo.us~~/business/standards_and_specs/~~Sec1015~~.pdf Standard Specification Section 1015.6] during production. All pumps and feed lines shall be properly insulated		that the temperature of the binder is kept uniform and within the mixing ranges in [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=14 Standard Specification Section 1015.6] during production. All pumps and feed lines shall be properly insulated
	to keep the binder at the required temperature.		to keep the binder at the required temperature.