| 水泥加固红土的受力特性及其微结构特征 |
| |
| 引用本文： | 杨玉婷,黄英,金克盛,张祖莲.水泥加固红土的受力特性及其微结构特征[J].水文地质工程地质,2012,39(4):80-87. |
| |
| 作者姓名： | 杨玉婷 黄英 金克盛 张祖莲 |
| |
| 作者单位： | 1. 云南辉固工程建设有限责任公司,昆明,650217
2. 昆明理工大学,昆明,650051 |
| |
| 摘 要： | 水泥加固红土的击实、剪切、压缩和渗透等受力特性及其微结构特征受到水泥加入比例和试样养护时间的影响。研究结果表明,水泥加固红土存在最佳击实制样时间,水泥加入越多,最大干密度越大、最优含水率越小。其抗剪强度和抗剪强度指标随水泥加入比例的增加和试样养护时间的延长逐渐增大,但增大的程度逐渐减慢,对粘聚力的影响大于对内摩擦角的影响;其压缩性和渗透性随水泥加入比例的增加和试样养护时间的延长显著减小,但减小的程度逐渐变缓;水泥加入比例的影响大于试样养护时间的影响。实质上,水泥的加入和试样的养护导致水泥加固红土呈现出包裹、填充和胶结的微结构特征,引起水泥加固红土的击实、剪切、压缩和渗透等力学特性的宏观变化。
|
| 关 键 词： | 水泥加固红土 水泥加入比例 试样养护时间 力学特性 微结构特征 |
Mechanical properties and micro-structure characteristic of laterite mixed with cement |
| |
| YANG Yu-ting
,
HUANG Ying
,
JIN Ke-sheng
,
ZHANG Zu-lian.Mechanical properties and micro-structure characteristic of laterite mixed with cement[J].Hydrogeology and Engineering Geology,2012,39(4):80-87. |
| |
| Authors: | YANG Yu-ting HUANG Ying JIN Ke-sheng ZHANG Zu-lian |
| |
| Affiliation: | 1.Yunnan Huigu Engineering Construction Co.,Ltd,Kunming 650217,China;2.Kunming University of Science and Technology,Kunming 650051,China) |
| |
| Abstract: | Mechanical properties such as compaction,shearing,compression,penetration and micro-structure characteristics of laterite strengthened by cement are changed with cement content and curing history.The research results show that there is an optimal moment after laterite is mixed with cement as compacted samples and that for samples,the more the cement added to laterite,the bigger the maximum dry density and the smaller optimal water content of the laterite.The shear strength of the strengthened laterite increases with increasing cement and longer cuing history but the increment of the strength decreases and its effect on cohesion is greater than on internal friction angle.The compression and penetration of laterite strengthened by cement are weakened with more cement and longer curing history but the decrement slows down and the function of cement is stronger than that of curing history.In fact,the addition of cement and sample cuing make laterite micro-structures to be wrapped,filled and cemented so that the macro-mechanical properties of strengthened laterite are changed. |
| |
| Keywords: | strengthened laterie with cement cement content sample curing history mechanical properties micro-structure characteristic |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《水文地质工程地质》浏览原始摘要信息 |
|
点击此处可从《水文地质工程地质》下载全文 |
|
