白云岩石粉对混凝土耐久性的影响及作用机理初探  

PRELIMINARY EXPLORATION ABOUT INFLUENCE AND ACTION MECHANISM OF DOLOMITE POWDER ON CONCRETE DURABILITY

作　　者：田景松 宋少民[2] 杨荣俊[1] 李彦昌[1] 刘炳尧 黄京胜 TIAN Jing-song;SONG Shao-min;YANG Rong-jun;LI Yan-chang;LIU Bing-yao;HUANG Jing-sheng(Beijing High Strength Concrete Co.,Ltd.,101102,Beijing,China;Beijing University of Civil Engineering and Architectur,102627,Beijing,China)

机构地区：[1]北京市高强混凝土有限责任公司,北京101102 [2]北京建筑大学,北京102627

出　　处：《建筑技术》2022年第1期55-59,共5页Architecture Technology

摘　　要：研究白云岩石粉材料性能特性及在混凝土中技术路线下,对混凝土耐久性的影响,进行微观电镜和孔结构分析,探讨白云岩石粉在混凝土中的作用机理,得出了白云岩石粉主要成分为CaO、MgO和SiO_(2),MgO含量较高;除中低强度等级、大体积混凝土外,白云岩石粉的适宜掺量为小于30%等结论。This paper studied the property of dolomite powder and its influence on concrete durability,carried out transmission electron microscope analysis and pore structure analysis,and discussed the action mechanism of dolomite powder in concrete.It was found that the main ingredients of dolomite are CaO,MgO and SiO_(2),among which MgO content is the highest;except low-strength,medium-strength and massive concrete,the appropriate mixing amount of dolomite powder is less than 30%.

关 键 词：混凝土材料特性 耐久性 微观分析 

分 类 号：TU74[建筑科学—建筑技术科学]