Use of Aggregate Materials As Roadway Base, Shoulder, and Surface Courses in Minnesota

The Mn/DOT Standard Specification for aggregates contains several different classes of surfacing and base course aggregates. To effectively use and specify these aggregates, it is important that their performance be characterized, and guidelines for their use be established. This report will outline the properties of each aggregate class and detail the effect that the specifications have on the performance, stability, durability, and weathering of an aggregate surface course, base, and shoulder material.