Traditionally, the criteria used for testing concrete mixtures are largely based on material strength and air content. But verifying that pavements are sustainable and long-lasting depends on other engineering properties. Iowa DOT led a multistate, multiyear effort to deploy new technologies that ensure high-quality pavements that require less maintenance over time.
This research project involved comprehensive educational initiatives, pilot testing, and project support. As a result of this effort, Iowa DOT and 18 other states have improved concrete mix specifications and are using new performance-based testing technologies to deliver improved concrete pavements.
Iowa DOT is also leading a follow-up project focused on handling concrete mixes at the construction site.
This research gives agencies new and better tools to select effective performance-based specifications for pavements and overlays that perform well throughout their design life cycles.
Learn more about this project in Iowa DOT’s new research brief, and check out other Iowa DOT research efforts on the News & Publications page.
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