Category:506 Concrete Overlays for Pavement: Difference between revisions

506.1 Construction Inspection (for Sec 506)

506.1.1 Ultrathin Concrete Whitetopping (for Sec 506.10)

506.1.1.1 Mix Design (for Sec 506.10.3)

Mix Approval (for Sec 506.10.3.1)

The contractor shall submit a mix design to District Materials for review and approval. Representative samples may need to be sent to Construction and Materials for laboratory testing.

506.1.1.2 Construction Requirements (for Sec 506.10.4)

Opening to Traffic (for Sec 506.10.4.6)

See Sampling

506.1.1.3 Method of Measurement (for Sec 506.10.5)

Pavement Thickness Determination (for Sec 506.10.5.3)

(Sec 506.10.5.3.1) Measurements for pavement thickness should be taken at random locations at approximately 200 ft. intervals per each 12 ft. lane. Additional measurements should be taken if the inspector has reason to believe that the pavement is deficient in thickness.

506.1.2 Portland Cement Concrete Unbonded Overlay (for Sec 506.20)

506.1.2.1 Description (for Sec 506.20.1)

Because of the field established plan quantity requirement, Contractor Furnished Staking should be set up in the contract. The contractor should provide enough information to establish the initial and final roadway profile in order to calculate this quantity. This information should include centerline and edgeline elevations at intervals acceptable to the resident engineer. The resident engineer should insure that the minimum overlay thickness is at the plan thickness.

506.1.2.2 Material (for Sec 506.20.2)

Debonding Material (Sec 506.20.2.1) This debonding material also helps control heat between the base surface and the unbonded overlay.