Over 500 million tons of HMA are placed in the United States each year so it's important that the material be properly sampled and tested during construction to ensure satisfactory performance. When ...

It takes one look at fine and coarse aggregates and knows immediately the moisture and particle size distribution.” — Quentin Cheng, Lead Computer Vision Engineer ...

All hot mix asphalt (HMA) mixes need to be compacted to a low air void content (typically less than 7 percent) in order to achieve a long service life under traffic. More and more, the asphalt binder ...