Laboratory and field tests, as well as a benefit-cost analysis, showed that hauling clean aggregates and mixing them with Class A aggregates could be an efficient way to reduce the costs of constructing and maintaining granular roadways in Iowa.
Iowa Highway Research Board; Iowa Department of Transportation
Cetin, Bora; Ashlock, Jeramy C.; and Jahren, Charles T., "Performance-Based Evaluation of Cost-Effective Aggregate Options for Granular Roadways" (2019). Tech Transfer Summaries. 123.