AASHTO PP 73-13 (2018) PDF Download

AASHTO PP 73-13 (2018) is a standard practice that outlines procedures and test methods for quality assurance, job site quality control, and reapplication of protective sealers for Portland cement concrete. The standard is applicable to sealers used for protecting new concrete or extending the lifespan of existing concrete structures in highway construction. It assumes that the sealer has been pre-qualified through TP 96, a separate testing process.

The standard provides guidelines for conducting product quality assurance testing both in the laboratory and on the job site. It also outlines test methods for evaluating the performance of sealers in the field and determining when reapplication is necessary. The standard distinguishes between two types of sealers: coatings, which remain on the surface of the concrete, and penetrants, which permeate the concrete without significantly altering its appearance.