0-6874 : Develop nondestructive rapid pavement quality Assurance/quality control evaluation test methods and supporting technology.

PDFTech Report0-6874Pavement performanceNondestructive testsQuality assuranceQuality controlGround penetrating radarSoil compactionTexasUnited StatesTexas A&M Transportation InstituteSebesta, StephenCrockford, BillGu, FanIm, SoohyokJoshaghani, AlriezaLiu, WentingLuo, XueLytton, RobertWilson, BryanZollinger, Dan G.,--1952-Texas A&M Transportation InstituteTexas. Dept. of TransportationUS Transportation CollectionThe findings from the proof of concept with mechanics-based models for flexible base suggest additional validation work should be performed, draft construction specification frameworks should be developed, and work extending the technology to stabilized materials should be performed.The proof of concept with the CMS showed that the technology can accurately map roller passes to verify application of the prescribed rolling pattern and that the compaction index principle in the CMS does appear viable for measuring density in real time. These findings with the CMS open up the possibility of passive inspection, where technology can minimize the exposure of inspectors in the work zone while still achieving (and actually increasing) testing coverage. The findings with the CMS suggest that additional variables need exploration in the density prediction model to improve density prediction accuracy