›› 2005, Vol. 26 ›› Issue (5): 755-758.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experimental investigation on treatment of loess subgrade with impaction and grind method(IGM)

WANG Ji-li1, LIU Yi-lin2, SHEN Xing-fu3 , PENG Sheng-ping4   

  1. 1.Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 2. Research Institute of Highway, Ministry of Communications, Beijing 100088, China; 3. Hubei Communication Planning and Design Institute, Wuhan 430071, China; 4. Hubei Construction Headquarters of Tianxian First Class Highway, Tianmen 431700, China
  • Received:2004-07-26 Online:2005-05-10 Published:2013-12-17

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Abstract: In a representative highway loess section, the experimental investigations on treatment of loess subgrade with impaction and grind method(IGM) were conducted. In these investigation, in-situ tests(loading tests, SPTs, DPTs, CPTs) and related laboratory tests were adopted. The rule that physico-mechanical parameters of subgrade (degree of compaction, degree of density, compression and collapsibility) and depth of treatment change along with pressing number is discussed. Through investigation, it is indicated that the effective depth of once treatment can reach 1.0m and has some effect on soil layer from 1.0m to 2.0m with the treatment of subgrade of loess with IGM. Therefore the treatment of subgrade with IGM is effective, practical and has high production efficiency. And it can get a wide use in highway loess foundation engineering.

Key words: loess, impaction and grind method(IGM), in-situ sounding, geotechnical test, degree of compaction

CLC Number: 

  • TU 413
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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