Experimental study on water stability of improved high liquid limit clay

被引：0

作者：

Li B. ^{[1
,2
]}

Xuan J. ^{[3
]}

Zheng W. ^{[4
]}

Hu Z. ^{[5
]}

Xu K. ^{[6
]}

Chen Y. ^{[1
,2
]}

Wang Y. ^{[7
]}

机构：

[1] Key Lab. of Ministry of Education for Geomechanics and Embankment Eng., Hohai Univ., Nanjing

[2] Jiangsu Research Center for Geotechnical Eng. Technol., Hohai Univ., Nanjing

[3] Zhejiang Communications Eng. Quality Supervision Bureau, Hangzhou

[4] Zhejiang Jinliwen Expressway Co., Ltd., Hangzhou

[5] The Fifth Construction Co., Ltd. of China Railway Tenth Group, Suzhou

[6] Inst. of Geotechnical Eng., Nanjing Hydraulic Research Inst., Nanjing

[7] Zhejiang Provincial Kewei Eng. Consulting Co., Ltd., Hangzhou

来源：

Chen, Yonghui (yonghuich@163.com) | 2016年 / Sichuan University卷 / 48期

关键词：

CBR; Drying-wetting cycle; High liquid limit clay; Improved soil; Unconfined compressive strength; Water stability;

D O I：

10.15961/j.jsuese.2016.04.008

中图分类号：

学科分类号：

摘要：

According to the possible durability problem of high liquid limit clay as roadbed filling in rainy climate, a series of tests on water stability characteristics of pure high liquid limit soil and lime or cement improved soil were carried out. The pure soils were red clay which picked from under-construction Longquan-Pucheng Highway section. The tests focused on the unconfined compression strength and CBR value under ordinary water immersion and drying-wetting cycle condition. Experimental results indicated that compacted high liquid limit clay with higher initial saturation had lower humidification speed, destructed slowly, and had higher water stability. The unconfined compression strength and CBR of most pure high liquid limit clay and improved soils decreased with the increase of soaking duration. But CBR value of 4% lime-improved soils with water immersion increased within a period. During drying-wetting cycles, the CBR value of the high liquid limit clay increased first and then decreased. The unconfined compression strength of improved high liquid limit soils improved with high dosage of lime or cement kept unchanged or decreased slightly and the soil still kept a high strength after multiple cycles. © 2016, Editorial Department of Journal of Sichuan University (Engineering Science Edition). All right reserved.

引用

页码：54 / 60

页数：6

共 13 条

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