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NCHRP research on post-consumer plastics, sustainable materials
July 1st, 2025
The National Cooperative Highway Research Program (NCHRP) has released two new research alerts. NCHRP Alert - NCHRP Research Report 1143: Evaluation of Post-Consumer Recycled Plastics in Asphalt Mixtures via the Dry Process NCHRP Research Report 1143: Evaluation of Post-Consumer Recycled Plastics in Asphalt Mixtures via the Dry Process. The asphalt pavement industry has a long history of […]

The role of a biaxial geogrid in subgrade stabilization
October 1st, 2024
FIGURE 1 Installation of TerraGrid® TXG-7 directly on top of high PI clay subgrade. In the civil engineering discipline, the challenge of constructing durable and cost-effective roadways over problematic soils is a common yet complex issue. High-plasticity clay subgrades, known for their susceptibility to moisture and subsequent weakening, pose significant hurdles. Traditional methods of soil […]
AASHTO names RAC vice chair
July 2nd, 2024
The American Association of State Highway and Transportation Officials (AASHTO) has named Cynthia Smith, state research engineer with the Mississippi Department of Transportation, to a two-year term as vice chair of the AASHTO Research Advisory Committee or RAC. Cynthia Smith. Photo courtesy of Mississippi DOT. The RAC is a subset of the AASHTO Special Committee on […]