Publications

This report provides a general overview of polyphosphoric acid modified binder. A modification mechanism between the acid and binder was proposed. The addition of acid was found to change the chemical compositions of the binder noticeably. The…

This test method defines the procedures for collecting reference data and for conducting the validation and repeatability checks for deflectograph equipment.

This specification provides minimum equipment, calibration, validation and survey method requirements for the conduct of network level pavement deflection testing using a deflectograph.