Crews lay high RAP asphalt pavement on a section of road in Crawford County, Iowa. This RAP mixture uses an innovative new rejuvenator.

Iowa State University engineers use innovative rejuvenator to recycle asphalt pavement

Researchers explore greener methods for incorporating high-percentage recycled asphalt pavement mixture into roadways Late last month, a team of Iowa State University (ISU) researchers and industry partners gathered in Crawford County, Iowa, for the unveiling of an exciting development in how engineers use renewable resources in jobsites. Chris Williams is a professor of geotechnical/materials engineering … Continue reading Iowa State University engineers use innovative rejuvenator to recycle asphalt pavement

Taylor’s research shows that, by improving concrete mixture processes to eliminate premature failure, the life of concrete structures could be increased by nearly double the amount of years. In the graph, this is shown through the comparison of projects including premature failures (all data points with blue best fit line) and non-failure projects (orange data points with orange best fit line). (Graph provided by Peter Taylor)

Iowa State researchers take new long-lasting highway findings on the road

Transportation engineers plan efforts to teach new concrete specifications to states in effort to cut delays, extend life of roadways It is hard to imagine a summer without the delays of road construction; however, researchers at Iowa State University (ISU) are finding new ways to keep the slow-downs to a minimum. To do so, they … Continue reading Iowa State researchers take new long-lasting highway findings on the road

CCEE researcher may help with those potholes

You’ve held your breath and grimaced as your car bounced over another big pothole. Iowans are probably going to have to get used to it, says an Iowa State University pavement expert. “You better buckle yourself in,” said Christopher Williams, an associate professor of civil, construction and environmental engineering and the manager of the Asphalt Materials … Continue reading CCEE researcher may help with those potholes