Effects of heavy farm equipment on paved roadways

University of Minnesota
Center for Transportation Studies
“Catalyst”, July 2012

Over the past few decades, farm size has increased significantly and farm equipment has become larger and heavier. In 2008, the Transportation Engineering and Road Research Alliance (TERRA) initiated a pooled-fund study to evaluate the effects of this heavy agricultural equipment on paved roadways.

Researchers from the University of Minnesota and Iowa State University studied pavement structural response, such as stresses and strains, under heavy farm equipment and a typical five-axle semi-trailer truck. The study included two asphalt roadway sections—representative of a typical 10-ton and 7-ton roadway—and two concrete pavement sections at the MnROAD research facility near Albertville, Minnesota. The sections were instrumented with electronic sensors to measure pavement responses.

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