氯离子侵蚀下钢筋混凝土耐久性寿命评估  

ASSESSMENT ON SERVICE LIFE OF REINFORCED CONCRETE IN CHLORIDE EROSION ENVIRONMENT

作　　者：赵华宁[1] 刘兆强[1] 

机构地区：[1]中冶集团中冶京诚工程技术有限公司,北京100176

出　　处：《工业建筑》2010年第S1期851-855,888,共6页Industrial Construction

摘　　要：通过试验,系统研究不同强度等级普通混凝土(C40、C50、C60、C80)及掺加粉煤灰混凝土(FC40、FC50、FC60)的抗氯离子渗透性能及抗碳化性能,得到混凝土氯离子扩散系数、快速碳化试验28d碳化深度及抗压强度三者之间的关系;在此基础上,采用Fick定律研究氯离子侵蚀环境下掺加粉煤灰钢筋混凝土结构内钢筋初锈时间,并与普通钢筋混凝土进行对比。The resistance to chloride permeability and carbonation of concrete containing fly ash with various strengths were experimentally studied and compared with that of plain concrete.The experimental results showed good correlation between chloride diffusion coefficient,carbonation depth,and compressive strength of concrete containing fly ash as well as plain concrete.Corrosion initiation moment of steel reinforcement of concrete containing fly ash was predicted using Fick's law in chloride corrosion environment and compared with that of plain concrete.

关 键 词：混凝土 耐久性 粉煤灰 氯离子扩散 

分 类 号：TU528[建筑科学—建筑技术科学]