›› 2010, Vol. 31 ›› Issue (1): 56-60.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experimental research on effect of fine grains on water retention capacity of silty sand

TIAN Hu-nan，KONG Ling-wei   

  1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071
  • Received:2009-07-18 Online:2010-01-10 Published:2010-02-02

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Abstract:

Experimental research on water retention characteristics of sand with different fine grains is carried out by pressure plate test to analyze the effect of fine grains on the soil water characteristic curve (SWCC). The results show that the water retention capacity of unsaturated sand enhanced with fine grains increase; while, the effect is varied in the regime of SWCC. The water retention capacity enhanced significantly when suction beyond air-entry value. is advanced to describe the SWCC of silty sand. Then, the effect of fine grain content of silty sand on the parameters of SWCC equation is analyzed; and the relationship of fine grain, suction and water content is described by .

Key words: fine content, sand, water retention characteristics, SWCC

CLC Number: 

  • TU 443
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