摘要
制备了3CaO·2SiO_2(C_3S_2)矿物,并用加速碳化的方式使其硬化.利用X射线衍射(XRD)、热分析(TG和DTA)、傅里叶变换红外光谱仪(FTIR)、扫描电子显微镜(SEM)和能谱仪(EDS),研究了C_3S_2矿物的CO_2吸收量、力学性能和微观结构变化.结果表明:C_3S_2试块在体积分数为99%的CO_2中碳化24h,CO_2碳化程度可以达到43.3%,抗压强度为74.8MPa;碳化产物CaCO_3和非晶态SiO_2为C_3S_2抗压强度的主要来源.
The pure 3CaO·2SiO 2(C3S2)was prepared as clinker and hardened via accelerated carbonation.The CO 2 uptake,mechanical properties and microstructure changes were analyzed by XRD,thermo gravimetric analysis(TG,DTA),FTIR and SEM-EDS.The results show that degree of CO 2 curing of the clinker reached 43.3%that results in compressive strength of 74.8 MPa after 24 h carbonation in 99%(by volume)CO 2 concentration;the carbonation product is calcium carbonate and silica gel,which contributes to the compressive strength.
作者
管学茂
魏红姗
马小娥
刘松辉
邱满
GUAN Xuemao;WEI Hongshan;MA Xiaoe;LIU Songhui;QIU Man(School of Materials Science and Engineering,Henan Polytechnic University,Jiaozuo 454003,China)
出处
《建筑材料学报》
EI
CAS
CSCD
北大核心
2018年第6期900-905,共6页
Journal of Building Materials
基金
国家自然科学基金资助项目(U1604118)
作者简介
第一作者:管学茂(1965—),男,湖北荆州人,河南理工大学教授,博士生导师,博士.E-mail:guanxuemao@hpu.edu.cn
