广西红粘土击实样强度特性与胀缩性能

›› 2004, Vol. 25 ›› Issue (3): 369-373.

广西红粘土击实样强度特性与胀缩性能

赵颖文，孔令伟，郭爱国，拓勇飞

中国科学院武汉岩土力学研究所岩土力学重点实验室，湖北武汉 430071

收稿日期:2003-04-02 出版日期:2004-03-10 发布日期:2014-07-15
作者简介:赵颖文，男，1978年生，硕士，主要从事特殊土的工程特性研究，现工作于上海市城市建设设计研究院
基金资助:
国家自然科学基金资助项目（编号：19902018）；国家重大基础研究前期研究专项项目(编号:2003CCA02200)

Strength properties and swelling-shrinkage behaviors of compacted lateritic clay in Guangxi

ZHAO Ying-wen, KONG Ling-wei, GUO Ai-guo, TUO Yong-fei

Key Laboratory of Rock and Soil Mechanics, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China

Received:2003-04-02 Online:2004-03-10 Published:2014-07-15

摘要/Abstract

摘要： 通过对广西贵港红粘土重型击实样的室内试验研究，探讨了其力学特性、胀缩性能、孔径分布特征与含水量之间的关系。结果表明：干密度指标总体上能反映红粘土击实样的强度规律，但非饱和击实样强度峰值对应的含水量因基质吸力作用而偏小，饱和后土体由于吸水膨胀与基质吸力的消失，使得强度峰值对应含水量较饱和前明显增大，红粘土在最优含水量下压实，虽可获得很高的压实度，但饱和后的强度并非最大；红粘土击实样的胀缩性能主要由含水量决定，同时，受到干密度的影响；孔隙主要以孔径在0.01～0.05μm范围内的小孔隙为主，为进一步掌握红粘土的工程力学特性提供了帮助。

关键词: 红粘土, 胀缩性, 基质吸力, 干密度, 孔径分布

Abstract: The relationships among mechanical indexes, swelling-shrinkage properties, pore size distributions and moisture contents of lateritic clay in Guigang of Guangxi Zhuang Autonomous Region, are discussed through experimental research on the heavy-pattern compacted samples. The results show that the dry density can reflect the strength rule of compacted lateritic clay as a whole, and the moisture contents of unsaturated compacted samples corresponding to the maximum of strength indexes are comparatively low because of the effect of matrix suction, while those after saturating increase obviously duo to water absorbing, swelling and the loss of matrix suction. For lateritic clay compacted under the condition of optimum moisture content, its strength is not the highest after saturation although a very high compaction degree is obtained. The swelling-shrinkage properties of compacted lateritic clay are mainly controlled by moisture content, and also affected by dry density. The pores of compacted lateritic clay are mainly small sizes in diameters from 0.01μm to 0.05μm, which is useful for the further mastery on the geotechnical properties of lateritic clay.

Key words: laterite, swelling-shrinkage properties, matrix suction, dry density, pore size distribution

中图分类号:

TU 411

赵颖文，孔令伟，郭爱国，拓勇飞. 广西红粘土击实样强度特性与胀缩性能[J]. , 2004, 25(3): 369-373.

ZHAO Ying-wen, KONG Ling-wei, GUO Ai-guo, TUO Yong-fei. Strength properties and swelling-shrinkage behaviors of compacted lateritic clay in Guangxi[J]. , 2004, 25(3): 369-373.

参考文献

相关文章 15

[1]	洪本根, 罗嗣海, 胡世丽, 王观石, 姚康, . 基质吸力对非饱和离子型稀土抗剪强度的影响[J]. 岩土力学, 2019, 40(6): 2303-2310.
[2]	王娟娟, 郝延周, 王铁行. 非饱和压实黄土结构特性试验研究[J]. 岩土力学, 2019, 40(4): 1351-1357.
[3]	易进翔，李磊，王佩，杨广，. 污泥–生活垃圾混合填埋体的压实特性研究[J]. , 2018, 39(S1): 453-460.
[4]	陶高梁，柏亮，袁波，甘世朝. 土-水特征曲线与核磁共振曲线的关系[J]. , 2018, 39(3): 943-948.
[5]	姜景山，程展林，左永振，丁红顺,. 干密度对粗粒料力学特性的影响[J]. , 2018, 39(2): 507-514.
[6]	钱劲松，李嘉洋，周定，凌建明. 考虑吸力效应的非饱和黏土回弹模量预估模型[J]. , 2018, 39(1): 123-128.
[7]	孙德安，何家浩，高游. 广吸力范围内压实红黏土的强度特性[J]. , 2017, 38(S2): 51-56.
[8]	陈波，孙德安，高游，李健,. 上海软黏土的孔径分布试验研究[J]. , 2017, 38(9): 2523-2530.
[9]	方瑾瑾，邵生俊，冯以鑫,. 真三轴条件下Q3原状黄土的吸力变化特性研究[J]. , 2017, 38(4): 934-942.
[10]	叶万军，董西好，杨更社，陈强，彭瑞奇，刘宽. 含水率和干密度对黄土热参数影响的试验研究[J]. , 2017, 38(3): 656-662.
[11]	吴珺华，杨松，. 干湿循环下膨胀土基质吸力测定及其对抗剪强度影响试验研究[J]. , 2017, 38(3): 678-684.
[12]	唐琳，唐晓武，孙凯, . 不等轴双向拉伸无纺织物孔径变化理论研究[J]. , 2017, 38(12): 3597-3603.
[13]	王新志，王星，胡明鉴，朱长歧，孟庆山，汪稔,. 吹填人工岛地基钙质粉土夹层的渗透特性研究[J]. , 2017, 38(11): 3127-3135.
[14]	杨校辉，朱彦鹏，郭楠，师占宾，冉国良, . 压实度和基质吸力对土石混合填料强度变形特性的影响研究[J]. , 2017, 38(11): 3205-3214.
[15]	李芃，谭晓慧，辛志宇，王雪，谢妍,. 确定渗析平衡时间的数值模拟方法[J]. , 2017, 38(11): 3363-3370.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed