摘要
采用瞬态法,利用探针施加一恒定加热功率,对砂土、粉土和粉质黏土在不同干密度、不同饱和度和不同温度条件下的导热系数进行了测试,得到了3种土导热系数的变化规律和经验公式.研究表明,导热系数随干密度和饱和度的增大而增大,随温度的变化并不是线性单调的.
Using the transient method,this paper tests the thermal conductivities of the sand,silt and silty clay in different dry density,saturation and temperature by employing a probe at certain heating power,and obtains the change rule of three kinds of soil and the experience formula. The research shows that the thermal conductivity increases with the dry density and saturation,and its change with temperature is not monotonic linear.
出处
《天津城建大学学报》
2015年第3期172-176,共5页
Journal of Tianjin Chengjian University
基金
国家自然科学基金(51178290)
关键词
非饱和土
干密度
饱和度
环境温度
导热系数
unsaturated soil
dry density
saturation
environment temperature
thermal conductivity
