预湿轻集料对高强混凝土早期收缩的影响  

Effect of early autogenous shrinkage in high-strength concrete by using saturated lightweight aggregates

作　　者：王晴[1] 陶丽[1] 刘磊[1] 

机构地区：[1]沈阳建筑大学,辽宁沈阳110168

出　　处：《混凝土》2005年第6期47-49,共3页Concrete

摘　　要：本文研究了用预湿轻集料部分取代普通粗集料对高强混凝土的强度和收缩的影响。用15%的预湿轻集料部分取代普通粗集料对于减少混凝土的自收缩有很大的效应。这个理论可以认为预湿轻集料给水泥提供了内部水分的供应,使其继续水化,阻止了收缩。Effect of a partical replacement of normal-weight aggregate by saturated lightweight aggregate in high-strength concrete on strength and autogenous shrinkage were discussed.A partial replacement of normal aggregate by 15% volume of saturated lightweight aggregate was very effective in eliminating the autogenous shrinkage.This method should be noted that the internal supply of water which from saturated lightweight aggregate to the cement made cement continuous hydration,and prevented the autogenous shrinkage.

关 键 词：高强混凝土 预湿轻集料 自收缩 

分 类 号：TU528.041[建筑科学—建筑技术科学]