›› 2012, Vol. 33 ›› Issue (10): 2973-2978.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Influences of water content on undrained shear strength of remolded dredged materials

WANG Liang1, 2，XIE Jian2，ZHANG Nan1，WANG Sheng-wei1，LÜ Yi-yan1   

  1. 1. Geotechnical Research Institute, Hohai University, Nanjing 210098, China; 2. South China Sea Marine Engineering and Environment Institute, State Oceanic Administration, Guangzhou 510300, China
  • Received:2012-02-22 Online:2012-10-10 Published:2012-10-19

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Abstract: Through preparing different water contents remolded dredged material, the influences of water content on the undrained shear strength of remolded dredged material by laboratory miniature high-precision shear vane apparatus are studied. The precision of the apparatus is 1 Pa. The experimental results show that the measured data are reasonable. But, the lower the shear strength of remolded dredged material is, the bigger the relative average deviation of the experimental results is. Test results show that the influences of water content on the undrained shear strength of remolded dredged material are obvious. Undrained shear strength decreases with increasing the ratio of water content to liquid limit (w/wL). The bigger w/wL is, the smaller is downtrend of undrained shear strength. When w/wL is the same, undrained shear strength of remolded dredged material is almost the same. Undrained shear strength linearly decreases with the increase in w/wL in the bilogarithmic plot. Relation between undrained shear strength and w/wL for all kinds of remolded dredged material is derived, undrained shear strengths of all kinds of water contents for all kinds of remolded dredged materials are derived by this relation. The test results of this paper are bigger than the calculated values of relation by Hong Zhen-shun. The test results are consistent with the calculated values of relations by Locat and Leroueil when IL >2. The test results are bigger than the calculated values of relations by Locat and Leroueil when IL<2.

Key words: laboratory miniature high-precision shear vane apparatus, water content, remolded dredged material, undrained shear strength

CLC Number: 

  • TU 411.3
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