A frost heaving mitigation method with the rubber-asphalt-fiber mixture cylinder

Abstract Severe frost heaving causes problems for heavy-haul railway embankments filled with lean clay during cold seasons in China. The anti-frost-heaving performance of a mixture, which consists of rubber particles, asphalt, and polypropylene fiber, was investigated by 1-D frost heaving tests and triaxial shear tests in the laboratory. The mixture cylinder embedded in the specimens can markedly reduce the frost heaving, and the increasing mass of tire granules plays a negative role in mitigating the frost heaving. The nonlinear elastic modulus for unfrozen soil decreases with the strain, while the constant elastic modulus for the mixture is independent of the strain. When the strain is