基于热线法测量硫酸盐渍土导热系数的研究

Study On the Hot-wire Method for Measuring Thermal Conductivity of Sulphate Saline Soil

基于热线法测量硫酸盐渍土的导热系数,对测试原理和实验装置进行了简要介绍,对不同含盐量、不同含水率以及不同干密度的硫酸盐渍土导热系数进行了测量,分析研究各个因素对盐渍土导热系数的影响,有利于通过优化盐渍土路基中的含盐量、含水率及密度因素来达到一定程度控制路基中的降温速率的目的,从而减小盐胀危害。

Based on the hot - wire method for measuring thermal conductivity of sulphate saline soila. Measuring principle and the test device are brief introduced. The device was used to test thermal conductivity of sulphate saline soil which have different salt content, different moisture content and different dry density. This paper discussed several factors on thermal conductivity of sulphate saline soil. The result is beneficial to the research that about reducing damage caused by salt expansion.