Study on Microstructure Changes of Soft Clay in the Peal River Delt under Dynamic Load

Author:

Liang Shi Hua1,Zhang Lang1,Liu Yong Jian1,Fu Na1

Affiliation:

1. Guangdong University of Technology

Abstract

The characteristics and distribution of pores in soil are the key factors in the determination of the physical and mechanical characteristics of soft soil. Using static-dynamic true triaxial test system of modified SPAX-2000 and scanning electron microscope (SEM), the microstructure images of soft clay in the Peal River Delt are studied. By analyzing these microstructure images, eight microstructure parameters including number of pore, total area, classification of area, total perimeter, average diameter, roundness, shape coefficient and anisotropy have been obtained. The changes of microstructure parameters are analyzed ,before and after applying dynamic load . The results show that the change of microstructure parameters has certain rules. This study is help to provide microscopic theory basis for static-dynamic drainage consolidation method to treatment soft ground engineering design.

Publisher

Trans Tech Publications, Ltd.

Subject

General Engineering

Reference13 articles.

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2. Lei Xue-wen, Bai Shi-wei, Meng Qing-shan. Mechanism and technology characteristics of dynamic consolidation by drainage[J]. Rock and Soil Mechanics, 2004, 25(4): 637-640. (in China).

3. Wang Anming, Li Xiao-gen, LI Zhang-ming et al. Indoor model test of dynamic drainage consolidation method of soft soil[J]. Rock and Soil Mechanics, 2009, 30(6): 1643-1648.

4. Liu Hai-ming, Yang Chun-he, Zhang Chao, Mao Hai-jun. Study on static and dynamic strength characteristics of tailings silt and its engineering application[J]. Safety Science , 2012, 50: 828–834.

5. Zhang Li-juan, Li Zhang-ming, K. Tim Law. Dynamic- static drainage consolidation method on silty ground[C], 61st Canadian Geotechnical Conference, September, 2008, Edmonton, Canada.

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