再生集料混凝土的微观结构特征  

Microscopic Structural Features of the Recycled Aggregate Concrete

作　　者：水中和[1] 潘智生[2] 朱文琪[3] 詹必浩[3] 

机构地区：[1]武汉理工大学硅酸盐材料工程教育部重点实验室,武汉430070 [2]香港理工大学土木及结构工程学系 [3]湖北武黄高速公路大修工程指挥部,武汉430074

出　　处：《武汉理工大学学报》2003年第12期99-102,共4页Journal of Wuhan University of Technology

基　　金：湖北省科技攻关计划 ( 2 0 0 3AA10 1C77)

摘　　要：研究了两种不同类型的再生混凝土集料 ( RC集料 )和一种花岗岩集料配制的混凝土的微观结构特征 ,尤其是集料和水泥浆体之间的界面过渡区的某些结构细节。结果表明 ,界面过渡区的微观结构特征与集料的密实程度有关 ,过于密实 (天然集料 )和过于疏松 (低标号混凝土 )的集料可引起界面区的多孔性或聚集粗大颗粒的水化产物 ,而适中密实程度的集料可形成较为密实的界面区。This paper is to study the microstructural characteristics of the concretes prepared with two recycled concrete aggregates (RC aggregate) and one granite aggregate. Special attention has paid to the structural details regarding the interfacial transition zone (ITZ) between the aggregates and the paste. The results show that the microstructural features of the ITZ related to the density of the aggregates,i.e.,excessively dense or loose aggregate surface leads to porous interfacial zone or well crystallized hydrates,whereas a moderately dense aggregate surface results in a relatively dense ITZ.

关 键 词：再生集料 微观结构 界面过渡区 

分 类 号：TU528[建筑科学—建筑技术科学]