Portland Cement Concrete Pavement Joint Sealant Practices and Performance (2021) / Chapter Skim
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1 Joints in concrete pavements are intended to provide freedom of slab movement induced by volumetric changes due to drying shrinkage, temperature changes, and moisture differences that develop within the slab. A key purpose for sealing rigid pavement joints should be to prevent or limit the intrusion of an incompressible material and to reduce the amount of water infiltrating the pavement structure (which can result in subbase erosion)
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2 Portland Cement Concrete Pavement Joint Sealant Practices and Performance • Not all agencies follow established practices regarding sealant shape factor, possibly risking premature bond failure. • There appears to be a need for tools or control protocols to facilitate agency inspection of cleaning and joint preparation operations.
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