华东交通大学学报2017，Vol.34Issue(3)：14-18,5.
不同温湿环境下泥岩吸水及膨胀特性的试验研究
Experimental Study on Water Absorption and Expansion Characteristics of Mudstone under Conditions of Different Temperature and Humidity
摘要
Abstract
Mudstones were sampled from Longgang station of Nanchang Metro Line 2 and were cut as well as ground in the laboratory in this study. Then it explored the water absorption and expansion regularity of mud-stones under different temperature and humidity conditions (relative humidity RH>95%),namely the normal tem-perature,35 ℃,40 ℃,and 45 ℃. The test results showed that the water absorption curve of the mudstones can be divided into three stages under different temperature and humidity conditions:severe water absorption phase, the deceleration phase of water absorption and water absorption equilibrium phase;water absorption and water absorption rate were linearly correlated with temperature. The expansion curves of mudstones under different hy-grothermal conditions can be divided into three stages:the strain acceleration stage, the strain deceleration stage, and the strain stabilization stage. With the increase of temperature,the axial expansion rate and the acceleration rate of expansion increased and the time of reaching the steady expansion was prolonged. It maintains that the temperature is linearly correlated with the axial expansion rate and expansion deformation rate.关键词
温湿环境/泥岩/吸水特性/膨胀特性Key words
temperature and humidity condition/mudstone/water absorption/expansion characteristic分类
建筑与水利引用本文复制引用
刁心宏,杨守兴,冒小波..不同温湿环境下泥岩吸水及膨胀特性的试验研究[J].华东交通大学学报,2017,34(3):14-18,5.基金项目
国家自然科学基金项目(51564010) （51564010）
