矿粉混凝土干燥收缩性能  

DRYING SHRINKAGE OF CONCRETE WITH GROUND SLAG

作　　者：张树青[1] 刘百臣[2] 陈元峻 

机构地区：[1]同济大学材料学院材料工程研究所,上海200433 [2]上海宝钢生产协力公司,上海201900 [3]上海宝田新型建材有限公司,上海200942

出　　处：《低温建筑技术》2005年第1期1-3,共3页Low Temperature Architecture Technology

摘　　要：主要研究了矿粉对混凝土干燥收缩性能的影响.试验结果表明:①在同水胶比条件下,矿粉掺量越多,混凝土干缩值越大;②在同标号条件下,普通掺量(20%～35%)的矿粉混凝土的干缩值与基准混凝土相比增幅不大;③在同标号(R28)条件下,矿粉掺量≥35%时,混凝土的早期干缩值(7d)的增幅都较大.The influence of ordingary ground slag on drying shrinkage of conrete was studied in this paper.The results show that:①Under the condition of same water-binder ratio,the higher the content of ground slag,the larger the drying shrinkage;②Under the condition of same strength,25%～30% ground slag addition does not influence drying shrinkage obviously;③For the concrete in which ground slag content is over 35%,drying shrinkage increase obviously at early age comparing to the reference concrete with same strength.

关 键 词：矿粉 混凝土 干燥收缩 掺量 

分 类 号：TU528.2[建筑科学—建筑技术科学]