搅拌工艺和粉煤灰掺量对混凝土氯离子渗透性的影响  

INFLUENCE OF MIXING PROCESS AND ADDITION OF FLY ASH ON CHLORIDE ION PERMEABILITY IN CONCRETE

作　　者：黄华县[1] 欧阳东[1] 文俊强[1] 范圆圆[1] 蔡瑞环[1] 李寒标[1] 

机构地区：[1]暨南大学力学与土木工程系,广州510632

出　　处：《腐蚀与防护》2007年第7期349-352,共4页Corrosion & Protection

基　　金："工程结构故障诊断"广东省高校重点实验室资助;"重大工程灾害与控制"教育部重点实验室资助;广州珠江黄埔大桥建设有限公司;东莞市建设局资助

摘　　要：采用NEL法测定混凝土的氯离子扩散系数,比较了不同搅拌工艺以及粉煤灰掺量对混凝土强度和氯离子渗透性能的影响。结果表明,在硅酸盐水泥中掺加适量粉煤灰以及采用二次搅拌工艺均可有效提高混凝土的力学性能和耐久性能。NEL method was adopted to measure the chloride ion diffusion coefficient. The effects of different additions of fly ash and different mixing processes of concrete on permeability of chloride ion were studied. Proper addition of fly ash or secondary mixing process can improve the mechanical properties and durability of the concrete efficiently.

关 键 词：混凝土 二次搅拌工艺 氯离子扩散系数 耐久性 NEL法 

分 类 号：TU528.32[建筑科学—建筑技术科学]