Only a small number of states have exemplary programs for the use of contractor tests for acceptance, said John D'Angelo, asphalt team leader, Office of Pavement Technology with the Federal Highway Administration (FHWA) in Washington, D.C. And if states can quickly verify contractors' QC tests, “it would provide better feedback on issues like contractor payment,” he said. “There are a number of states trying to get contractor tests used for acceptance, and there are a lot of compelling reasons to do that,” said Dave Newcomb, vice president of research and technology at the National Asphalt Pavement Association, Lanham, Md.Īs state transportation budgets are cut back and the number of state technicians declines, contractors can pick up the slack, said Newcomb. Still at issue in many states, however, is the matter of which tests are used for acceptance and payment to contractors for completed jobs. States still run independent quality assurance (QA) tests to verify contractors' test results, but far more tests are run by the contractors. Over the past 20 years or so, the majority of state DOTs have transferred primary responsibility for quality control (QC) of asphalt materials over to the producers doing the work.
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