沙漠砂EPS轻质混凝土的制备及其力学特征研究  

Preparation and mechanical characteristics of EPS lightweight concrete in desert sand

作　　者：牛晟 康亚明 陈静波 周建民 NIU Cheng;KANG Yaming;CHEN Jingbo;ZHOU Jianmin(School of Chemistry and Chemical Engineering,State Ethnic Affairs Commission,Yinchuan 750021,China;Key Laboratory of Chemical Engineering and Technology,State Ethnic Affairs Commission,Yinchuan 750021,China;Ningxia Xu Ri Zhong Li environmental protection technology Co.,Ltd.,Yinchuan 750200,China;Shenhua Ningxia Coal Industry Group Corporation Energy Engineering Company Coal Mine Design and Research Institut,Yinchuan 750200,China)

机构地区：[1]北方民族大学化学与化学工程学院,宁夏银川750021 [2]北方民族大学国家民委化工技术基础重点实验室,宁夏银川750021 [3]宁夏旭日众粒环保科技有限公司,宁夏银川750200 [4]神华宁煤集团公司能源工程公司煤矿设计研究院,宁夏银川750200

出　　处：《混凝土》2020年第3期146-149,共4页Concrete

基　　金：国家自然基金资助项目(51569001,51369001)。

摘　　要：针对目前国内外尚无对沙漠砂EPS混凝土进行相关研究的状况,在综合现有技术的基础上,经多次试验制备出不同干密度的沙漠砂EPS混凝土试件,并对其进行了单轴压缩试验,试验结果表明:(1)沙漠砂EPS混凝土的干密度与其单轴抗压强度及割线模量E50呈线性增长关系,干密度范围在500~1 100 kg/m^3试件单轴抗压强度范围在0.5~8 MPa之间,割线模量E50在60~350 MPa之间;(2)沙漠砂EPS混凝土的力学特征介于软岩硬土之间,是一种介于两者之间的中间岩土类材料。In view of the fact that there is no relevant research on desert sand EPS concrete at home and abroad,the research group has prepared desert sand EPS concrete specimens with different dry densities on the basis of comprehensive existing technology,and carried out.The results of uniaxial compression experiments show that(1)The dry density of desert sand EPS concrete increases linearly with its uniaxial compressive strength and secant modulus E50.The dry density ranges from 500 to 1100 kg/m3.The compressive strength ranges from 0.5 to 8 MPa,and the secant modulus E50 is between 60 and 350 MPa.(2)The mechanical characteristics of desert sand EPS concrete are between soft rock and hard soil,which is somewhere in between middle geotechnical material.

关 键 词：沙漠砂EPS混凝土 单轴压缩 单轴抗压强度 割线模量E50 软岩硬土 

分 类 号：TU528.2[建筑科学—建筑技术科学]