The InfraTest Asphalt Analyzer provides an automated and enclosed method of performing solvent extractions to verify asphalt content on bituminous mixture, and rubber-modified bituminous mixtures, ...

The Pennsylvania Turnpike Commission relies on rigorous inspection, lab testing and long-term performance analysis to ensure ...

Unfortunately, this book can't be printed from the OpenBook. If you need to print pages from this book, we recommend downloading it as a PDF. Visit NAP.edu/10766 to get more information about this ...

Unfortunately, this book can't be printed from the OpenBook. If you need to print pages from this book, we recommend downloading it as a PDF. Visit NAP.edu/10766 to get more information about this ...

By cross-referencing records and analyzing the data, the Statesman found several lab technicians changed their asphalt test results, making multiple changes to a single result. Those changes can ...

BOISE, Idaho (AP) - Companies that are responsible for checking the quality of Idaho’s road materials have altered the results of their asphalt tests thousands of times, government documents show.