[1]杨俊,童磊,张国栋.干湿循环效应对风华砂改良膨胀土CBR特性影响研究[J].郑州大学学报(工学版),2014,35(02):19-23.[doi:10.3969/j.issn.1671 -6833.2014.02.005]
　YANG Jun,TONG Le,ZHANG Guodong.Research on Effect of CBR Characteristies ofExpansive Soil Improved by Weathered Sand under Dry-wet Cycle[J].Journal of Zhengzhou University (Engineering Science),2014,35(02):19-23.[doi:10.3969/j.issn.1671 -6833.2014.02.005]
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干湿循环效应对风华砂改良膨胀土CBR特性影响研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
35卷
期数:
2014年02期
页码:
19-23
栏目:
出版日期:
2014-04-30

文章信息/Info

Title:
Research on Effect of CBR Characteristies ofExpansive Soil Improved by Weathered Sand under Dry-wet Cycle
作者:
杨俊; 童磊; 张国栋
Author(s):
YANG Jun;  TONG Le;  ZHANG Guodong
1. Colaborative lnnovation Center of Geologieal H azards and Eeologieal Environment in Three Gorges Area in Hubei Provinee.China Three Gorges University, Yichang 443002, China; 2. Civil and Architectural institute, China Three Gorges University,Yichang 443002 .China
Keywords:
expansive soil;  weathered sand;  dry-wet cyele;  CBR;  CBR expansion rate
DOI:
10.3969/j.issn.1671 -6833.2014.02.005
文献标志码:
A
Abstract:
This paper discussed the elfect of CBR charaeteristics of expansive soil improved by weathered sand andanalyzed the modified CBR swelling rate changes along with the wet-dry eyeles and weathered sand content. Re.search shows that: (1) CBR value atenuation caused by wet and dry cyele can be effeetively suppressed whenmixed with weathered sand. The inhibition elfeet with the inerease of weathered sand dosage first inereases and thendeereases , the best inhibitory efeet of weathered sand content is 4096 : (2) With the increase of the times of thedry-wet eyeling, weathered sand improved expansive soil CBR value gradually decreased. When the times of dry.wet eyeling reaches at 4 .5, CBR value gradually stabilized. (3) Mived with weathered sand due to eycles of wet.ting and drying effeets eaused by the specimen suraee cracking, collapse had gpod inhibitory effeet.
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