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[1]沈飞凡,孔玉侠,王慧娟.聚丙烯纤维膨润土的试验研究和机制分析[J].南京工业大学学报(自然科学版),2018,40(03):55-60.[doi:10.3969/j.issn.1671-7627.2018.03.010]
 SHEN Feifan,KONG Yuxia,WANG Huijuan.Experimental study and mechanism analysis of polypropylene fiber-reinforced expansive soil[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2018,40(03):55-60.[doi:10.3969/j.issn.1671-7627.2018.03.010]
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聚丙烯纤维膨润土的试验研究和机制分析()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
40
期数:
2018年03期
页码:
55-60
栏目:
出版日期:
2018-05-20

文章信息/Info

Title:
Experimental study and mechanism analysis of polypropylene fiber-reinforced expansive soil
文章编号:
1671-7627(2018)03-0055-06
作者:
沈飞凡孔玉侠王慧娟
南京工业大学 岩土工程研究所,江苏 南京 210009
Author(s):
SHEN FeifanKONG YuxiaWANG Huijuan
Institute of Geotechnical Engineering,Nanjing Tech University,Nanjing 210009,China
关键词:
聚丙烯纤维 膨润土强度 纤维含量
Keywords:
fiber-reinforcement expansive soil strength fiber content
分类号:
TU411.7
DOI:
10.3969/j.issn.1671-7627.2018.03.010
文献标志码:
A
摘要:
为研究聚丙烯纤维的含量对膨润土强度和变形的影响,本文通过等向压缩试验、常规三轴压缩不排水剪切试验和固结快剪试验等对不同质量掺量(0、0.25%、0.5%)的聚丙烯纤维膨润土进行研究。试验结果表明:对于某一膨润土,当纤维选择合适,纤维加筋可以有效抑制膨润土体的变形,并存在一个最优加筋率; 纤维的含量对膨润土的强度有一定的影响,在相同围压下,纤维掺量在0.25%左右对土体的增强效果最好; 纤维主要增加的是土体的黏聚力,对土体的内摩擦角影响不大。
Abstract:
The aim of this research was to investigate the behavior of polypropylene fiber-reinforced expensive soil.The experimental study consisted of isotropic compression tests,undrained triaxial compression tests and direct shear tests.Tests were carried out on a uniform expensive soil reinforced with randomly distributed polypropylene fibers(0,0.25% and 0.5% by weight,respecturely).Experimental investigation demonstrated that fiber inclusion increases the strength of expensive soil,and there is a best strength for expensive soil under the same confining pressure with 0.25% polypropylene fiber contents by weight.In addition,fiber-reinforcement makes a great differenceson cohesion but little on the friction angle for the tested expansive soil.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2017-01-15
基金项目:国家自然科学基金(11402109); 江苏省自然科学基金(BK20130909)
作者简介:沈飞凡(1990—),男,河南商丘人,硕士,主要研究方向为建筑与土木工程; 孔玉侠(联系人),讲师,E-mail:kongyuxia@njtech.edu.cn.
引用本文:沈飞凡,孔玉侠,王慧娟.聚丙烯纤维膨润土的试验研究和机制分析[J].南京工业大学学报(自然科学版),2018,40(3):55-60..
更新日期/Last Update: 2018-05-31