再生骨料混凝土力学、变形和耐久性能的研究  

Advances of Research on Mechanical Property,Deformation and Durability of Recycled Aggregate Concrete

作　　者：吴仕成[1] 严捍东[1] 

机构地区：[1]华侨大学土木工程学院,福建厦门361021

出　　处：《三峡环境与生态》2012年第4期25-29,共5页Environment and Ecology in the Three Gorges

基　　金：泉州市科技计划项目基金资助(2010G26)

摘　　要：该文结合《混凝土和砂浆用再生细骨料》(GB/T25176)、《混凝土用再生粗骨料》(GB/T25177)和《再生骨料应用技术规程》(JGJ/T240)最新相关规范,对比分析了国内外有关再生混凝土的研究成果。研究表明,再生骨料的取代率、砂浆微粉含量、压碎指标及吸水率是影响再生混凝土性能的关键因素;再生混凝土的力学、变形以及耐久性能均较天然骨料混凝土差,但经合理技术配制的再生骨料混凝土性能均能满足工程应用的要求。This article systematically compares and analyzes the research results concerning recycled concrete at home and abroad according to relevant latest standards including the Recycled Fine Aggregate for Concrete and Mortar （GB/T25176）, the Recycled Coarse Aggregate for Concrete and Mortar （GB/T25177） and the Technical Specifica- tions for Application of Recycled Aggregate （JGJ/T240）. The results show that the substitution rate, fine powder content, crushing index and water absorption of recycled aggregate are key factors affecting the properties of recy- cled aggregate concrete; the mechanical property, deformation and durability of recycled aggregate concrete are poo- rel than natural aggregate concrete, but with proper technical preparation, the properties of recycled concrete can meet the requirements of civil engineering.

关 键 词：再生骨料混凝土 力学性能 变形性能 耐久性 

分 类 号：TU528[建筑科学—建筑技术科学]