Experimental Study on Unconfined Compression Strength of Compacted Granite Residual Soils


Article Preview

Granite residual soils are often used as compacted soils in engineering structures such as pavement, embankments and backfills in Xiamen. Many geotechnical problems such as bearing capacity, lateral earth pressures and slope stability require an assessment of the shear strength of soil. Since the geotechnical properties of residual soils are impaired in contact with water, a series of unconfined compression tests are carried out on granite residual soils. Results of tests include effects of degree of compaction, moisture content, degree of saturation and cyclic wetting and drying on unconfined compression strength respectively. The increase in degree of compaction and compacting effort increases unconfined compression strength and the former greatly affects the strength. Moisture content of soils is higher than the optimum one of 2.5% for high strength and it is lower than optimum one of 2.5% for good plasticity in Xiamen areas. The degree of saturation of high unconfined compression strength normally ranges from 64% to 76%. In addition, cyclic wetting and drying causes loss of unconfined compression strength and the maximum loss commonly occurs at the first cycle and then is slowed down by the following cycles till the strength remains approximately constant.



Advanced Materials Research (Volumes 250-253)

Edited by:

Guangfan Li, Yong Huang and Chaohe Chen






D. X. Chen et al., "Experimental Study on Unconfined Compression Strength of Compacted Granite Residual Soils", Advanced Materials Research, Vols. 250-253, pp. 2124-2128, 2011

Online since:

May 2011




[1] Hanfang Huang: Science and Technology of West Regions in China Vol. 7 (2008), p.7 (In Chinese).

[2] D.G. Fredlund, H. Rahardjo: Soil Mechanics for Unsaturated Soils (John Wiley & Sons, Singapore 1993).

[3] H. Matsuoka: Soil mechanics, edited by Ting Luo, Yangping Yao (China Waterpower Press 2001). (In Chinese).

[4] Chengren Xiong, Baochen Liu, Jiasheng Zhang, Duowen Liu: Bulletin of Soil and Water Conservation Vol. 23 (2003), p.195 (In Chinese).

[5] Heping Yang, Rui Zhang, Jian-long Zheng: Chinese Journal of Geotechnical Engineering Vol. 28 (2006), p.1936 (In Chinese).

[6] Runqiu Huang, Guoqing Qi: Chinese Journal of Geotechnical Engineering Vol. 26 (2004), p.216.

[7] Honglei Yin, Qian-jun Xu, Zhong-kui Li: Journal of Hydraulic Engineering Vol. 39 (2008), p.568 (In Chinese).

In order to see related information, you need to Login.