90 Years of Engineering, Research & Education Excellence

The Asphalt Institute (AI) has a rich history of paving…

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Current Practices for transporting asphalt binder

Asphalt binder is one of the most commonly used engineering…

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Emerging Warm Mix Asphalt technologies

This is the second in a series of articles on…

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Lab Corner – Summer 2009 Got residue?

Since its publication as a standard in 1939, ASTM D244…

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Quality begins at the quarry

Aggregates for Hot Mix Asphalt (Second in a series about…

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PPA modification and performance testing

Polyphosphoric acid, otherwise known as PPA in our industry, is…

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Lead by your sample

Representative Sampling of Asphalt Binder, Aggregate and Plant Mix A…

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So much to do, so little time

So much to do, so little time… Remember that one?…

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FHWA works to support statistical quality assurance techniques

While the feds are not dictating “Percent Within Limits,” they…

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