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本文研究了冻融循环对张承高速公路半刚性基层材料路用性能的影响。经过不同次数的冻融循环后,其导热系数都呈减小的趋势,与冻融循环次数之间符合二次函数关系;其渗水系数呈增大的趋势,与冻融循环次数之间为幂函数关系;其无侧限抗压强度、劈裂强度及抗压回弹模量均呈减小趋势,它们与冻融循环次数之间均呈线性函数关系。
This paper studies the effect of freeze-thaw cycles on road performance of semi-rigid base material of Zhang-Cheng Expressway. After different times of freeze-thaw cycles, the thermal conductivity tends to decrease with the number of freeze-thaw cycles in line with the quadratic function relationship; the water permeability coefficient showed an upward trend, and the number of cycles between the number of freeze-thaw cycles Function. The unconfined compressive strength, splitting strength and compressive resilience modulus all show a decreasing trend, and they show a linear function relationship with the number of freeze-thaw cycles.