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MgO对熟料烧成及性能的影响机理
作者:任雪红???张文生?叶家元?张洪滔???
单位:(中国建筑材料科学研究总院有限公司?绿色建筑材料国家重点实验室?北京?100024)?
关键词:氧化镁?硅酸盐水泥熟料?阿利特?多晶态?固溶?抗压强度?准同型相界?
分类号:TQ172.11
出版年,卷(期):页码:2019,47(8):0-0
DOI:
摘要:

?采用化学试剂合成硅酸盐水泥熟料,应用X射线衍射结合Rietveld方法和差示扫描量热等,研究了MgO对熟料煅烧、矿物组成、阿利特晶型及熟料性能等的影响。结果表明:MgO在碳酸钙分解反应阶段已开始影响甚至参与了熟料烧成反应;MgO掺入使阿利特和铁铝酸四钙含量增多,贝利特和铝酸三钙含量相对降低;但当MgO掺量达到2% (固溶置换极限)及以上时,方镁石形成,熟料矿物组成基本不再变化;随着MgO的掺入,阿利特的晶型逐渐由M1型为主转变稳定为M3晶型。MgO掺量在1%附近时,靠近阿利特准同型相界处,熟料发展强度最高。

基金项目:
国家自然科学基金(51872272,51672260)资助项目。
作者简介:
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