高渗透改性环氧树脂充填砂浆材料裂隙试验研究

硅酸盐通报 ›› 2021, Vol. 40 ›› Issue (1): 77-82.

所属专题：水泥混凝土

高渗透改性环氧树脂充填砂浆材料裂隙试验研究

朱豪伟^1,2, 刘长武^1,2, 陈小强³, 赵超^1,2

1.四川大学水利水电学院,成都 610065;
2.水力学与山区河流开发保护国家重点实验室,成都 610065;
3.联勤保障部队,西宁联勤保障中心军事设施建设处,西宁 810007

收稿日期:2020-08-08 修回日期:2020-09-01 出版日期:2021-01-15 发布日期:2021-02-07
通讯作者: 刘长武,教授。E-mail:liuchangwu@scu.edu.cn
作者简介:朱豪伟(1997—),男,硕士研究生。主要从事地下工程方向的研究。E-mail:zhuhaowei@stu.scu.edu.cn

Experimental Study on Mortar Materials with Fissures Filled withHigh Permeability Modified Epoxy Resin

ZHU Haowei^1,2, LIU Changwu^1,2, CHEN Xiaoqiang³, ZHAO Chao^1,2

1. College of Water Resource and Hydropower,Sichuan University,Chengdu 610065,China;
2. State Key Laboratory of Hydraulics and Mountain River Engineering,Chengdu 610065,China;
3. Department of Military Facilities Construction of Xining Joint Logistics Center,Joint Logistics Army,Xining 810007,China

Received:2020-08-08 Revised:2020-09-01 Online:2021-01-15 Published:2021-02-07

摘要/Abstract

摘要： 制作含4种裂隙倾角(0°、30°、45°、60°)的圆柱体砂浆试样,选用高渗透改性环氧树脂作为充填材料,在重力作用下无压力充填试样裂隙,并对充填前后的试样进行单轴压缩试验。试验结果表明:高渗透改性环氧树脂能依靠自身的渗透性渗进试样的裂隙,固化后能不同程度地提高不同裂隙倾角试样的抗压强度,其中45°倾角和60°倾角的试样提高效果明显;不论是充填前还是充填后,试样的抗压强度随倾角的变化规律一致,均随着倾角的增大逐渐降低;试样的破坏模式大多表现为拉应力导致的拉伸劈裂破坏,且充填环氧树脂前后试样的破坏模式相差不大。研究成果为实际工程中分析灌注环氧树脂浆液对岩体强度的影响提供一定的数据支撑和理论依据。

关键词: 砂浆材料, 裂隙充填, 环氧树脂, 强度特性, 渗透性, 破坏模式

Abstract: Cylindrical mortar specimens containing pre-made fissures were prepared,and fissures were of four kinds of different inclination angles (0°,30°,45° and 60°,respectively).Fissures of specimens were filled with high permeability modified epoxy resin under the effect of gravity and without grouting pressure.Uniaxial compression tests were carried out before and after the process of grouting,correspondingly.Test results show that the high permeability modified epoxy resin permeates into fissures of specimens relying on its own permeability.After solidification,it improves the uniaxial compressive strength (UCS) of specimens with different inclination angles of fissures to various extents.Among them,the improvement of UCS is the most significant when fissures inclination angles are 45° and 60°,respectively.The UCS of specimens decreases gradually with the increase of the inclination angle from 0° to 60°,no matter whether fissures are filled with epoxy resin or not.Failure modes of specimens before and after filling epoxy resin see no much difference,most of which are tensile splitting failures caused by tensile stress.The research results provide some data support and theoretical basis for analyzing the influence of epoxy resin on rock mass strength in practical engineering.

Key words: mortar material, fissure filling, epoxy resin, strength characteristic, permeability, failure mode

中图分类号:

TU452

朱豪伟, 刘长武, 陈小强, 赵超. 高渗透改性环氧树脂充填砂浆材料裂隙试验研究[J]. 硅酸盐通报, 2021, 40(1): 77-82.

ZHU Haowei, LIU Changwu, CHEN Xiaoqiang, ZHAO Chao. Experimental Study on Mortar Materials with Fissures Filled withHigh Permeability Modified Epoxy Resin[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(1): 77-82.

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高渗透改性环氧树脂充填砂浆材料裂隙试验研究

Experimental Study on Mortar Materials with Fissures Filled withHigh Permeability Modified Epoxy Resin

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