[1]陈峰.早龄期玄武岩纤维水泥土的强度及变形特性[J].深圳大学学报理工版,2017,34(No.6(551-660)):576-582.
 Chen Feng.Strength and deformation characteristics of basalt fiber cement-soil[J].Journal of Shenzhen University Science and Engineering,2017,34(No.6(551-660)):576-582.
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早龄期玄武岩纤维水泥土的强度及变形特性()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第34卷
期数:
2017年No.6(551-660)
页码:
576-582
栏目:
土木建筑工程
出版日期:
2017-11-30

文章信息/Info

Title:
Strength and deformation characteristics of basalt fiber cement-soil
作者:
陈峰
福建江夏学院工程学院, 福建福州 350108
Author(s):
Chen Feng
College of Engineering, Fujian Jiangxia University, Fuzhou 350108, Fujian Province, P.R.China
关键词:
岩土工程水泥土玄武岩纤维早龄期抗压强度变形模量
Keywords:
geotechnical engineering cement-soil basalt fiber early age compressive strength deformation modulus
文献标志码:
A
摘要:
为了提高水泥土的受力性能,利用玄武岩纤维的加筋增强效果,探讨在水泥土中掺入玄武岩纤维来改善其7 d时力学性能的方法. 通过不固结不排水三轴试验,研究了早龄期玄武岩纤维水泥土的抗剪强度,分析其强度与变形特性. 试验结果表明,玄武岩纤维的掺入使水泥土的黏聚力有较大幅度的提高,且两者大致呈正比关系;应力应变曲线可定义为线弹性阶段、塑性屈服阶段和峰值软化阶段等3个阶段;玄武岩纤维的掺入具有类围压作用,对水泥土强度具有明显的提高作用,且增大了其塑性变形;拟合了不同配比的玄武岩纤维水泥土试件7 d时的变形模量与抗压强度的关系,可为实际工程提供参考.
Abstract:
In order to enhance the mechanics quality of cement-soil, the basalt fiber’s reinforcement effect, and the way to improve cement soil’s strength at seven day ages by means of mixing the basalt fiber have been discussed in this paper. By the undrained triaxial compression tests, the early age shear strength and deformation of basalt fiber cement-soil are studied. The results showed that the cohesion of cement-soil has been greatly improved by incorporation of fiber. The stress–strain curves could be divided into three stages which are linear elastic stage, plastic yield stage and peak stage of softening. The incorporation of basalt fibers had the effect on the strength of specimens which is like the confining pressure. It also has obviously improved the strength of cement soil, and increased its plastic deformation. Eventually the relationship between the deformation modulus and compressive strength of basalt fiber cement-soil specimens is fitted, which age is 7 days. They could be used for reference in practical engineering.

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更新日期/Last Update: 2017-10-10