Warm Isn’t Hot. It’s Cool.
It’s July. It’s sweltering. And when you’re stuck in a line of traffic while a paving crew toils, it is difficult to think of asphalt as anything but miserably hot. Yet, warm-mix asphalt is really cool: it is sustainable and more energy-efficient and less costly than traditional hot-mix asphalt. The question is, will it stand up to freezing, thawing and pounding traffic? Stacy Williams, a research associate professor in the civil engineering department, and the researchers in her lab put warm-mix asphalt to the test in a Research Frontiers video.