Courses during Thawing

AUTC Project No. 107045Resilient modulus (MR) of base course material is an important material input forpavement design. In Alaska, due to distinctiveness of local climate, material source,fines content and groundwater level, resilient properties of D-1 granular base coursematerials are significantly affected by seasonal changes. The presence of fines (P200)affects frost susceptibility of base materials and controls the aggregates\u2019 ability tosupport vehicular load, especially during the spring-thaw period. To systematicallyevaluate the impact of fines content on the resilient properties of D-1 base coursematerials with varied fines content, gradation, moisture content and temperatureduring thawing and provide regression coefficients ki which are required for theflexible pavement design, a laboratory investigation was conducted on D-1 materialsfrom Northern, Central, and Southeast Regions of Alaska Department ofTransportation and Public Facilities (AKDOT&PF) at different temperatures,moisture and fines contents