再生混凝土基于抗碳化性能的配合比设计研究  

Study on Mixed Proportion Design of Recycled Concrete Based on Anti-carbonization Perforlmance

作　　者：何霞[1] 杨韦生 曹大富 

机构地区：[1]扬州职业大学土木工程系,225009 [2]扬州市房地产测绘队,225000 [3]扬州大学建工学院,225000

出　　处：《混凝土与水泥制品》2011年第6期12-15,共4页China Concrete and Cement Products

基　　金：江苏省"青蓝工程"中青年学术带头人科研基金项目(苏教师(2007)2号);扬州市科技计划项目(YZ2007048-3)

摘　　要：将总功效系数法运用于评价大气环境下再生高性能混凝土(HPRC)抗碳化性能的指标体系。该方法以混凝土结构抗碳化性能和抗渗透性作为长期性能的主要设计指标,用碳化深度和氯离子渗透系数进行考核;短期性能用混凝土的工作性与强度评价,工作性以坍落度与扩展度为考核指标,强度则根据结构受力状态选择抗压强度或抗折强度为考核指标。将以上四个性能指标做归一化处理后融为一个整体指标,即总功效系数,作为HPRC基于抗碳化性能的设计指标。在此基础上,给出了配合比设计流程与实用设计表达式。Mixture ratio design method of High Performance Recycled Concrete（HPRC） based on anti-carbonization performance in atmospheric environment is proposed based on general efficiency coefficient method.The presented method considers workability tested by slump value,slump flow and concrete strength as short-period performances indices.At the same time,anti-carbonization performance and impermeability are taken as long-period performance indices,which are evaluated via carbonized depth and chlorine ion permeability coefficient.Farther,general efficiency coefficient that combined the above four indices into a total performance index is used to design and optimize the mixture ratio of HPRC.The design program and utility formula based on the general efficiency coefficient method are put forward.

关 键 词：再生高性能混凝土 配合比设计 总功效系数 抗碳化性能 氯离子渗透系数 强度 工作性 

分 类 号：TU528[建筑科学—建筑技术科学]