高强粉煤灰混凝土的抗炭化性能研究  

Research on anti carbonization performances of high strength fly ash concrete

作　　者：米文瑜[1] 

机构地区：[1]华北科技学院土木工程系,河北三河065201

出　　处：《煤炭科学技术》2008年第6期33-35,共3页Coal Science and Technology

摘　　要：为了研究了粉煤灰掺量对混凝土耐久性的影响,进行了试验研究,考察了粉煤灰等量取代水泥对混凝土强度的影响。粉煤灰对混凝土炭化性能的影响以及粉煤灰对混凝土碱度的影响。研究结果表明:掺入粉煤灰和高效减水剂配制的高性能混凝土,随着粉煤灰掺量的增加,混凝土的碱度降低;在50%掺量范围内,混凝土的最低pH值为11.7,钢筋不发生锈蚀,高强粉煤灰混凝土在标准条件下炭化28 d后的炭化深度为0。In order to research the fly ash quantity added affected to the durability of the concrete,tests and researches had conducted to investigate the fly ash quantity instead of relative quantity cement affected to the concrete strength,fly ash affected to the carbonized performance of the concrete and affected to the alkalinity of the concrete.The research results showed that as for the high performance concrete mixed with fly ash and high efficient dewater agent,with the increasing of the fly ash added,the alk...

关 键 词：粉煤灰 高性能混凝土 耐久性 强度 炭化 碱度 

分 类 号：TU528[建筑科学—建筑技术科学]