Osmotic suction of highly plastic clays |
| |
| Authors: | Yulian Firmana Arifin Tom Schanz |
| |
| Institution: | 1. Laboratory of Soil Mechanics, Bauhaus-University Weimar, Coudraystrasse 11C, 99421, Weimar, Germany
2. Laboratory of Foundation Engineering, Soil and Rock Mechanics, Ruhr-Universit?t Bochum, Geb?ude IA 4/126, 44780, Bochum, Germany
|
| |
| Abstract: | This paper presents a study on osmotic suction of compacted highly plastic clays. Two different types of bentonite (i.e. Calcigel
and a bentonite from India called herein as Indian bentonite) were used. Squeezing technique was utilized to obtain soil pore-water
of the specimen. Using relationship between electric conductivity and osmotic pressure of salt solution, osmotic suction of
soil pore-water was obtained. Additional tests (i.e. total and matric suction using filter paper method and swelling pressure
using constant volume swelling pressure test) were performed. The results show that osmotic pressure of soil pore-water obtained
decreases by increasing squeezing pressure. Based on experimental result, osmotic suction of the specimen is osmotic pressure
of the first drop of extracted soil pore-water. An empirical method was suggested to determine the squeezing pressure in squeezing
technique. In addition, roles of osmotic suction in thermo-hydro-mechanical behavior of highly plastic clays were presented
and discussed in the paper. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
