A SIMPLE METHOD FOR TESTING THE FRACTAL DIMENSION OF COMPACTED BENTONITE IMMERSED IN SALT SOLUTION

Guosheng Xiang, Yongfu Xu, Shenghua Xie and Yuan Fang
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Guosheng Xiang: School of Civil Engineering and Architecture, Anhui University of Technology, Anhui, Maanshan 243002, P. R. China†Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
Yongfu Xu: #x2020;Department of Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
Shenghua Xie: School of Civil Engineering and Architecture, Anhui University of Technology, Anhui, Maanshan 243002, P. R. China
Yuan Fang: School of Civil Engineering and Architecture, Anhui University of Technology, Anhui, Maanshan 243002, P. R. China

Surface Review and Letters (SRL), 2017, vol. 24, issue 03, 1-8

Abstract: This study employs swelling deformation test for estimating the fractal dimension of salt-modified bentonite soil by measuring the void ratio of montmorillonite (em) and the effective stress (pe). For the compacted Tsukinuno bentonite, a typical Na-montmorillonite, the fractal dimension is tested by the swelling deformation test conducted in sodium chloride solutions with different concentrations. According to the results, the fractal dimension of the specimens is essentially constant irrespective of the concentration of inundating NaCl solution. The strong correlation of the results from the swelling deformation test with those from the nitrogen adsorption test indicates that the swelling deformation test is an effective laboratory method for testing the fractal dimension of compacted bentonite in salt solution.

Keywords: Compacted bentonite; fractal dimension; effective stress; swelling deformation; nitrogen adsorption (search for similar items in EconPapers)
Date: 2017
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DOI: 10.1142/S0218625X17500408

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