HYDROCHEMICAL EFFECT OF DIFFERENT QUALITY OF WATER ON THE BEHAVIOUR OF AN EXPANSIVE SOIL DURING WETTING AND DRYING CYCLES

被引：3
|
作者：
Estabragh, A. R. [1 ]
Moghadas, M. [1 ]
Javadi, A. A. [2 ]
机构：
[1] Univ Tehran, Fac Soil & Water Engn, POB 4411, Karaj 3158777871, Iran
[2] Univ Exeter, Coll Engn Math & Phys Sci, Computat Geomech Grp, Exeter EX4 4QJ, Devon, England
来源：
IRRIGATION AND DRAINAGE | 2016年 / 65卷 / 03期
关键词：
expansive soil; wetting and drying; osmotic suction; EC; pH; SWELLING BEHAVIOR;
D O I：
10.1002/ird.1974
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
The effect of quality of water on deformation, pH, EC ( electrical conductivity) and osmotic suction was studied for an expansive soil during wetting and drying tests. The cyclic wetting and drying tests were conducted on samples of an expansive soil in a modified oedometer flooded with distilled, acidic and saline water. During the tests axial deformation of the samples was recorded continuously. pH and EC of pore water and reservoir water were measured through duplicated samples in a conventional oedometer. Osmotic suction was calculated based on the values of EC. The results show that the magnitude of deformation depends on the quality of the water and the deformation attained an equilibrium condition after almost four cycles. pH, EC and osmotic suction decreased with increasing suction. Copyright (C) 2016 John Wiley & Sons, Ltd.
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页码：371 / 381
页数：11
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