Effects of Freeze-Thaw and Overload Conditions on the Resilient Modulus of Frost-Susceptible Soils.

摘要

The resilient modulus of frost-susceptible soils was evaluated for effects of freeze-thaw, moisture imbibition, and overloading. Substantial stiffness reductions were observed for both the freeze-thaw and imbibition conditioning regimes. Most reduction occurred during the first two cycles of freezing or wetting. The effects of freeze-thaw on a subgrade material can be approximated through conditioning of samples with moisture imbibition cycles only. Recommendations for modifying the AASHTO T274 test are provided.