| 硫酸盐侵蚀作用下水泥砂浆水力劈裂特性 |
| |
| 引用本文： | 李凌,徐力群,吴琼,杜坤,林文. 硫酸盐侵蚀作用下水泥砂浆水力劈裂特性[J]. 水利水电科技进展, 2021, 41(3): 83-88 |
| |
| 作者姓名： | 李凌 徐力群 吴琼 杜坤 林文 |
| |
| 作者单位： | 河海大学水利水电学院,江苏 南京 210098 |
| |
| 基金项目： | 国家自然科学基金雅砻江联合基金(U1765205)；河海大学中央高校基本科研业务费项目自由探索专项(B200203039) |
| |
| 摘 要： | 为研究硫酸盐侵蚀作用下水泥砂浆水力劈裂特性,利用三场耦合试验系统,设计4种试验工况进行水力劈裂试验,分析不同pH值的硫酸盐溶液、不同侵蚀时间下水泥砂浆力学性能和抗水力劈裂能力.试验结果表明,不同pH值的硫酸盐溶液对水泥砂浆的水力劈裂力学特性有不同影响,在侵蚀后期,对于0.1 mol/L的Na2 SO4溶液,pH值分别为...
|
| 关 键 词： | 水泥砂浆 硫酸盐侵蚀 水力劈裂特性 劣化 pH值 |
Hydraulic fracture characteristics of cement mortar under sulfate attack |
| |
| LI Ling,XU Liqun,WU Qiong,DU Kun,LIN Wen. Hydraulic fracture characteristics of cement mortar under sulfate attack[J]. Advances in Science and Technology of Water Resources, 2021, 41(3): 83-88 |
| |
| Authors: | LI Ling XU Liqun WU Qiong DU Kun LIN Wen |
| |
| Affiliation: | College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China |
| |
| Abstract: | In order to study the hydraulic fracture characteristics of cement mortar under sulfate attack, four test conditions were designed using a three-field coupling test system. The mechanical properties and hydraulic fracture resistance of cement mortars in sulfate solutions with different pH values and with different erosion times were analyzed. The experimental results show that the cement mortars in sulfate solutions with different pH values has different effects on the mechanical properties of hydraulic fracture. In the later stage of erosion, the deterioration degrees of hydraulic fracture properties of mortar in the 0. 1 mol/L Na2SO4 solution with pH values of 7, 3 and 1 gradully decrease. It was found that the hydraulic fracturing resistance of cement mortar under sulfate attack has a significant cubic function relationship with the erosion time. |
| |
| Keywords: | cement mortar sulfate attack hydraulic fracture characteristics deterioration pH value |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《水利水电科技进展》浏览原始摘要信息 |
|
点击此处可从《水利水电科技进展》下载免费的PDF全文 |
|
