摘要
本文研究了掺加首钢矿粉对混凝土干燥收缩和早期抗裂性的影响。试验结果表明:(1)在同标号条件下,掺加矿粉增大了混凝土干燥收缩值,标号越高,增加幅度越大;(2)掺加比面积430m2/kg的矿粉可以改善混凝土早期抗裂性:而掺加比面积520m2/kg的矿粉混凝土抗裂性变差。
The influence of ground slag by Beijing-steel Plant to the dry shringkage and the resistance to cracking of concrete at early age were studied.The results show that:(1) Under the condition of the same strength grade of concrete,the more the addition of ground slag,the bigger the dry shrinkage of concrete;the more the strength grade of concrete,the more obvious the effect;(2)The resistance to cracking of concretes with the area of 430m^2/kg ground slag at early age are increased,but when the area of ground slag is above 520m^2/kg,the resistance to cracking of concrete at early age is weaker.
出处
《混凝土》
CAS
CSCD
北大核心
2005年第2期43-45,共3页
Concrete
关键词
矿粉
混凝土
干燥收缩
抗裂性
ground slag
concrete
dry shrinkage
resistance to cracking
