钙矾石和碳硫硅钙石引起灰土地基鼓胀病害机理初探  

Preliminary Study on the Mechanism of Lime-Soil Foundation Swelling Disease Caused by Ettringite and Thaumasite

作　　者：骆军 米海珍[2] 曹亚鹏 LUO Jun;MI Haizhen;CAO Yapeng(Gansu Jinxia Construction and Installation Co.,Ltd.,Lanzhou Gansu 730030,China;Lanzhou University of Technology,Lanzhou Gansu 730050,China;Northwest Institute of Ecology and Environmental Resources,Chinese Academy of Sciences,Lanzhou Gansu 730030,China)

机构地区：[1]甘肃金厦建筑安装有限责任公司,甘肃兰州730030 [2]兰州理工大学,甘肃兰州730050 [3]中国科学院西北生态环境资源研究院,甘肃兰州730030

出　　处：《工程质量》2019年第5期81-84,共4页Construction Quality

基　　金：兰州市城关区科技计划项目:兰州新区湿陷性黄土盐渍化对建筑物地基的影响研究(2018KJGG0065)

摘　　要：为了进一步探明灰土地基鼓胀的原因及其发生机理,对场地内采取的素土和灰土土样进行检测、分析,在灰土中发现了膨胀能力极强的钙矾石和碳硫硅钙石。论文对钙矾石和碳硫硅钙石的生成过程和生成条件作了进一步探究,揭示了钙矾石和碳硫硅钙石生成的化学反应过程及诱发化学反应的条件,并对钙矾石和碳硫硅钙石引起灰土地基鼓胀病害的抑制措施进行了初步尝试。In order to further clarify the cause and mechanism of lime-soil foundation swelling,the plain soil and lime soil samples taken in the site are tested and analyzed,ettringite and thaumasite with strong expansibility were found in lime soil.In this paper,the formation process and conditions of ettringite and thaumasite were further explored,the chemical reaction process of ettringite and carbosulfite and the conditions inducing the chemical reaction were revealed,and the preliminary attempt was made to inhibition measures the swelling of lime soil foundation caused by ettringite and thaumasite.

关 键 词：灰土地基 鼓胀 病害 钙矾石 碳硫硅钙石 反应条件 抑制措施 

分 类 号：P642[天文地球—工程地质学]