Smithk at 14:54, 22 November 2016

2016-11-22T14:54:40Z

← Older revision		Revision as of 09:54, 22 November 2016
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	[[Category:771 Bridge ~~Preventative~~ Maintenance Guidelines\|771.12]]		[[Category:771 Bridge Preventive Maintenance Guidelines\|771.12]]

Smithk: Per Maintc, updated activity code number

2014-10-16T15:43:24Z

Per Maintc, updated activity code number

← Older revision		Revision as of 10:43, 16 October 2014
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	{\|style="padding: 0.3em; margin-left:15px; border:1px solid #a9a9a9; text-align:center; font-size: 95%; background:#f5f5f5" width="160px" align="right"		{\|style="padding: 0.3em; margin-left:15px; border:1px solid #a9a9a9; text-align:center; font-size: 95%; background:#f5f5f5" width="160px" align="right"
	\|-		\|-
	\|'''Code:''' ~~R327~~		\|'''Code:''' R328
	\|}		\|}

EPG-Admin: Updated activity code.

2008-12-31T19:37:08Z

Updated activity code.

← Older revision		Revision as of 14:37, 31 December 2008
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	{\|style="padding: 0.3em; margin-left:15px; border:1px solid #a9a9a9; text-align:center; font-size: 95%; background:#f5f5f5" width="160px" align="right"		{\|style="padding: 0.3em; margin-left:15px; border:1px solid #a9a9a9; text-align:center; font-size: 95%; background:#f5f5f5" width="160px" align="right"
	\|-		\|-
	\|'''Code:''' ~~R321~~		\|'''Code:''' R327
	\|}		\|}

EPG-Admin: New page: {|style="padding: 0.3em; margin-left:15px; border:1px solid #a9a9a9; text-align:center; font-size: 95%; background:#f5f5f5" width="160px" align="right" |- |'''Code:''' R321 |} Bridge j...

2007-12-21T20:39:00Z

New page: {|style="padding: 0.3em; margin-left:15px; border:1px solid #a9a9a9; text-align:center; font-size: 95%; background:#f5f5f5" width="160px" align="right" |- |'''Code:''' R321 |} Bridge j...

New page

{|style="padding: 0.3em; margin-left:15px; border:1px solid #a9a9a9; text-align:center; font-size: 95%; background:#f5f5f5" width="160px" align="right"
|-
|'''Code:''' R321
|}

Bridge joint sealing with polytite is done prevent dirt, debris and chlorides from deteriorating the deck and supporting bridge members. The work is scheduled in October thru April with temperatures between 40 to 65 degrees.

==Materials==
Polytite, Epoxy adhesive, black beauty abrasive.

==Procedures==
1. Perform any repairs to the joint, as required, before attempting to seal with Polytite. Minor spalls or chipping of the concrete are acceptable. Joints repaired with concrete products shall be allowed to cure for fourteen days. Joints repaired with epoxy products shall be cured in accordance with manufacturer’s recommendations.

2. Using hand tools or other equipment as required, clean out as much of the existing sealant and debris as possible to a depth of at least 5 in.

3. Sandblast the joint faces with black beauty or other clean abrasives.

4. Mix and apply epoxy adhesive to sidewalls of joint face.

5. Release Polytite from packaging and pull off tape to expose tacky surface. Slide material down into the gap leaving material one-quarter inch below roadway surface. Upon release from packaging, Polytite will begin to expand so install product immediately. It may be necessary to install temporary shims against the sidewalls between the joint face and the Polytite to help hold the material in place. Remove shims when the material has adequately expanded.

6. Coat adjacent pieces or Polytite with silicone caulk when working across the joint opening, and push snugly to fit against each additional section. Caulk the top of the butt joint at the roadway surface.

'''General Note''': Material should be sized to fit as snugly as possible into the joint. The expansion is based on temperature and colder temperatures may take longer to expand. Acceleration of the expansion may be obtained by using artificial heating source. The material should be placed in a warmer environment such as truck cab on colder days to help the material expand quicker when the release tape is removed.

==Instructional Photographs==
{|
|[[Image:771.12 Bridge Joint Sealing - Polytite1.jpg|225px]] || [[Image:771.12 Bridge Joint Sealing - Polytite2.jpg|400px]]
|-
|colspan="2"|'''Using hand tools or other equipment as required, clean out as much of the existing sealant and debris as possible to a depth of at least 5 inches.'''
|-
|[[Image:771.12 Bridge Joint Sealing - Polytite3.jpg|400px]] || [[Image:771.12 Bridge Joint Sealing - Polytite4.jpg|400px]]
|-
|'''Sandblast the joint faces with black beauty or other clean abrasives.''' || '''Mix and apply epoxy adhesive to the sidewalls of joint face.'''
|-
|[[Image:771.12 Bridge Joint Sealing - Polytite5.jpg|400px]] || [[Image:771.12 Bridge Joint Sealing - Polytite6.jpg|225px]]
|-
|'''Release Polytite from packaging and install product immediately.''' || '''Material should be sized to fit as snugly as possible into the joint.'''
|}

[[Category:771 Bridge Preventative Maintenance Guidelines|771.12]]

771.12 Bridge Joint Sealing - Polytite - Revision history

Smithk at 14:54, 22 November 2016

Smithk: Per Maintc, updated activity code number

EPG-Admin: Updated activity code.

EPG-Admin: New page: {|style="padding: 0.3em; margin-left:15px; border:1px solid #a9a9a9; text-align:center; font-size: 95%; background:#f5f5f5" width="160px" align="right" |- |'''Code:''' R321 |} Bridge j...