EXPERIMENTAL STUDY ON THE CHLORIDE PERMEABILITY OF RECYCLED AGGREGATE CONCRETE

摘要：

As a kind of new building material,recycled aggregate concrete (RAC) isgradually being applied to structure. The chloride impermeability of RAC plays an importantrole in the evaluation and design of the durability of concrete structures. In this paper,thechloride ion permeability of recycled aggregate concrete (RAC) containing 100％ recycledcoarse aggregate (RCA) is investigated experimentally. Seven mixes of concrete with targetcube compressive strength ranging from 20 Mpa to 40 MPa were cast using recycled ornormal coarse aggregate. Special attention of the analysis is devoted to the contrast ofchloride penetration of RAC and normal aggregate concrete (NAC),and the relationshipbetween chloride permeability and the compressive strength of RAC. The test results showthat the chloride impermeability of RAC increases with the growth of the compressive ofconcrete,and the penetration of chloride ion of RAC is nearly similar to that of normalaggregate concrete.

关键词： recycled aggregate concretem mixture ratio design compressive strength chloride permeability

作者: Hao Wang Jin Wu

作者单位: Department of Civil Engineering,Nanjing University of Aeronautics and Astronautics,PR China

会议类型: 国际会议

会议名称: The International Conference on Durability of Concrete Structures(2008年混凝土结构耐久性国际学术会议)

会议地点: 杭州

会议语种:英文

页码: 254-260

在线出版日期: 2008-11-01（万方平台首次上网日期，不代表论文的发表时间）