Research on Effect of CBR Characteristies ofExpansive Soil Improved by Weathered Sand under Dry-wet Cycle
[1]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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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
35
Number of periods:
2014 02
Page number:
19-23
Column:
Public date:
2014-04-30
- Title:
- Research on Effect of CBR Characteristies ofExpansive Soil Improved by Weathered Sand under Dry-wet Cycle
- Keywords:
- expansive soil; weathered sand; dry-wet cyele; CBR; CBR expansion rate
- CLC:
- -
- 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.
- References:
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