蒙脱石含量对膨润土膨胀行为影响的试验研究

辐射防护 ›› 2018, Vol. 38 ›› Issue (6): 511-515.

蒙脱石含量对膨润土膨胀行为影响的试验研究

刘伟¹, 梁栋¹, 杨仲田¹, 冒海军², 李洪辉¹, 贾梅兰¹, 赵帅维¹, 毛亮¹

1.中国辐射防护研究院中核高放废物地质处置评价技术重点实验室,太原 030006;
2.中科院武汉岩土力学研究所,武汉 430071

收稿日期:2017-09-20 出版日期:2018-11-20 发布日期:2020-07-21
作者简介:刘伟(1986—),男,2012年毕业于兰州大学核科学与技术学院核能与核技术工程专业,助理研究员。E-mail:fflglw@126.com

Experimental study on influence of montmorillonite content on expansion behavior of bentonite

LIU Wei¹, LIANG Dong¹, YANG Zhongtian¹, MAO Haijun², LI Honghui¹, JIA Meilan¹, ZHAO Shuaiwei¹, MAO Liang¹

1. China Institute for Radiation Protection, Taiyuan 030006;
2. Institute of Rock and Soil Mechanics of Chinese Academy of Sciences, Wuhan 430071

Received:2017-09-20 Online:2018-11-20 Published:2020-07-21

摘要/Abstract

摘要： 高放废物深地质处置中,作为缓冲回填材料的膨润土应具有良好的膨胀性能。为了解蒙脱石含量对膨润土膨胀行为的影响,采用自行设计的试验装置对不同蒙脱石含量膨润土的膨胀行为进行了试验研究。结果表明,在试验条件下,成型膨润土膨胀行为的各项指标(轴向最大膨胀力和径向最大膨胀力)均随着蒙脱石含量的增加而增加,且呈线性关系。蒙脱石含量为70%时,径向、轴向最大膨胀力分别达到2.03 MPa和2.25 MPa,其比值为0.902。结果可为膨润土设计提供参考。

关键词: 膨胀力, 蒙脱石含量, 膨润土, 地质处置

Abstract: In order to find out the influence of montmorillonite content on swelling behavior of bentonite, the swelling pressure is tested using home-made equipment. Results show that, under experimental conditions,the indexes(maximum axial swelling pressure and radial swelling pressure)increase with the increase of montmorillonite content, and there is a linear relationship between the indexes and montmorillonite content. The maximum radial and axial swelling pressure were up to 2.03 MPa and 2.25 MPa respectively, and their ratio was 0.902 for the sample of 70% montmorillonite content. The experimental results can provide reference for design of bentonite in geological disposal.

Key words: swelling pressure, montmorillonite content, bentonite, geological disposal

中图分类号:

TL942

刘伟, 梁栋, 杨仲田, 冒海军, 李洪辉, 贾梅兰, 赵帅维, 毛亮. 蒙脱石含量对膨润土膨胀行为影响的试验研究[J]. 辐射防护, 2018, 38(6): 511-515.

LIU Wei, LIANG Dong, YANG Zhongtian, MAO Haijun, LI Honghui, JIA Meilan, ZHAO Shuaiwei, MAO Liang. Experimental study on influence of montmorillonite content on expansion behavior of bentonite[J]. RADIATION PROTECTION, 2018, 38(6): 511-515.

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