A new triaxial apparatus for testing soil water retention curves of unsaturated soils under different temperatures

被引：17
|
作者：
Cai, Guo-qing [1 ]
Zhao, Cheng-gang [1 ]
Li, Jian [1 ]
Liu, Yan [1 ]
机构：
[1] Beijing Jiaotong Univ, Sch Civil Engn, Dept Geotech & Geoenvironm Engn, Beijing 100044, Peoples R China
来源：
JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE A | 2014年 / 15卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Unsaturated soils; Temperature controlled; Triaxial apparatus; Volume change; Soil-water characteristic curve; VOLUME CHANGE BEHAVIOR; MECHANICAL-BEHAVIOR; THERMOMECHANICAL BEHAVIOR; CONSTITUTIVE MODEL; SATURATED CLAYS; COMPACTED CLAY; SUCTION; THERMOPLASTICITY;
D O I：
10.1631/jzus.A1300358
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper presents a new triaxial apparatus for testing soil water retention curves (SWRCs) under different temperatures. The components of this modified apparatus, as well as the special features of each component, were described. The key part of this innovative apparatus was the temperature control system, which was cooperated with a loading system and a suction control system. Different methods of heating were compared and a more effective method, which used a heating element around the pressure chamber, was consequently adopted. Under different temperatures (25, 40, and 60 A degrees C) and different net mean stresses (40, 100, and 200 kPa), typical results from the SWRCs tests for unsaturated silty clay were presented and analyzed. The experimental results show that the volumetric water content reduces with the increasing temperature at constant suction.
引用
收藏
页码：364 / 373
页数：10
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