| 水泥固化硫酸钠污染土的电阻率和强度特性研究 |
| |
| 引用本文： | 董晓强,白晓红,吕永康.水泥固化硫酸钠污染土的电阻率和强度特性研究[J].土木工程学报,2011(Z2). |
| |
| 作者姓名： | 董晓强 白晓红 吕永康 |
| |
| 作者单位： | 太原理工大学;太原理工大学煤科学与技术教育部和山西省重点实验室; |
| |
| 基金项目： | 国家自然科学基金(51078254,51078253); 中国博士后科学基金(20090461274); 山西省青年科技研究基金(2009021023) |
| |
| 摘 要： | 以水泥固化的硫酸钠污染土为对象,首先定量研究水泥土电阻率和无侧限抗压强度随龄期和硫酸钠含量的变化规律,然后研究水泥土电阻率和无侧限抗压强度的关系,最后从化学反应的角度浅析电阻率和强度的变化机理。结果表明:在各个硫酸钠含量下,水泥土电阻率和强度均随着龄期的增加而增大;在各个龄期下,水泥土电阻率和强度均随着硫酸钠含量的增加先增大后减小,当硫酸钠含量等于9g/kg时,它们均达到最大值;水泥土强度随着其电阻率的增加而增大。水泥土电阻率的改变是由于孔隙结构和导电离子含量发生变化,电阻率越高,结构的整体导电性就越差,土颗粒之间的连接越紧密,孔隙比就越小,孔隙的连通性就越差,结构性越强,导致水泥土的抗压强度越高。
|
| 关 键 词： | 水泥土 电阻率 污染 无侧限抗压强度 |
Study on the electrical resistivity and strength of cemented soil contaminated by sodium sulfate |
| |
| Affiliation: | Dong Xiaoqiang1,2 Bai Xiaohong1 Lü Yongkang2 (1.Taiyuan University of Technology,Taiyuan 030024,China,2.Key Laboratory of Coal Science and Technology of the Ministry of Education and Shanxi Province,Taiyuan University of Technology,China) |
| |
| Abstract: | Targeting the cemented soil contaminated by sodium sulfate,the relationships between their electrical resistivity,age,sodium sulfate content and unconfined compression strength have been studied quantitatively.Then the mechanism of electrical resistivity and unconfined compression strength were analyzed from the point of view of chemical reaction.The results showed: the electrical resistivity and unconfined compression strength increase with the increase of age under every sodium sulfate content;the electri... |
| |
| Keywords: | cemented soil electrical resistivity contaminated unconfined compression strength |
| 本文献已被 CNKI 等数据库收录！ |
|
