Shear Performance of Recycled Tire Polymer Fiber Reinforced Cement Stabilized Carbonate Saline Soil
SUN Chang
WANG Fengchi
ZHAO Hanyu
CHEN Hao
Abstract：Basing on the dual demands of enhancing the shear bearing capacity of carbonate saline soil and improving the sustainable utilization of recycled tire polymer fiber(RTPF),a method of improving the properties of cement stabilized carbonate saline soil with RTPF was proposed.Through triaxial shear tests and microscopic inspections,the influence and mechanism of RTPF on the shear strength of cement stabilized carbonate saline soil were investigated.The results indicate that the addition of RTPF first increases and then decreases the shear strength of cement stabilized carbonate saline soil.The optimal proportion is 1.0%-2.0%for fiber bundles and 0.1%-0.2%for fibrils.RTPF can improve the cohesion and internal friction angle of cement stabilized carbonate saline soil.The toughening effect of fiber bundle is higher than that of fibrils.The piecewise function can accurately describe the stress-strain relationship of RTPF reinforced cement stabilized carbonate saline soil.
Keywords：carbonate saline soilrecycled tire polymer fibertriaxial shear testshear strengthstrain-stress relationship
Publication Date：2025-08-30
Online Publishing Date：2025-09-05(First online date of this platform, not the publication date of the document)
Pages：9( 799-807 )