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New Database and Testing Methods will Prevent Pavement Damage

Posted: Nov 18, 2020

MPC research at South Dakota State University will help roadway agencies reduce pavement stripping, a moisture-induced loss of bonding between aggregates and the asphalt binder that typically begins at the bottom of the hot-mix asphalt layer and progresses upward. Stripping is a serious form of roadway deterioration that can be difficult to recognize because it shows up as other forms of distress, such as rutting, raveling, corrugations, or cracking. The researchers developed an asphalt binder-aggregate compatibility database as well as testing and analyzing methods for screening asphalt mixes for their potential for moisture damage. Accurate screening of mixes regarding their potential for this damage will help agencies avoid the use of stripping-prone mixes in construction of new pavements and maintenance of existing pavements. The outcomes of this study will lead to a better pavement performance and service life, resulting in significant cost savings.

Rouzbeh Ghabchi, Ph.D.
South Dakota State University

Screening of South Dakota Asphalt Mixes for Moisture Damage Using Conventional and Innovative Approaches

NDSU Dept 2880P.O. Box 6050Fargo, ND 58108-6050