粉煤灰与表面涂层对混凝土抗氯离子侵蚀能力的影响
Influence of Fly Ash and Coating on Chloride Ion Corrosion Resistance of Concrete
摘 要
试验了不同掺量下单掺粉煤灰、表面涂层材料(环氧树脂或聚合物水泥基防水材料)以及两者共同作用对混凝土抗氯离子侵蚀能力的影响,分析了粉煤灰改善混凝土抗氯离子渗透性能的机理.研究结果表明:粉煤灰和表面涂层均可显著地提高混凝土的抗氯离子渗透能力;粉煤灰的改善效果随着掺量的增加而增加;环氧树脂的作用效果比聚合物水泥基防水材料更明显;粉煤灰与表面涂层材料结合使用效果更优;粉煤灰的火山灰效应、填充效应以及对氯离子的初始固化能力是改善混凝土抗氯离子渗透性能的三个重要因素.
粉煤灰
涂层
氯离子
渗透
concrete
fly ash
coating
chloride ion
penetration
Abstract
The influence of single-added fly ash with different amounts,coatings (epoxy resin or water proof paint) and cooperation on chloride ion corrosion resistance of concrete was studied and the action mechanism of fly ash was analyzed.The concretes ability to resist chloride ion penetration can be largely improved by fly ash or coatings and the effect increases with increasing fly ash amount.Improving effect of epoxy resin is better than that of water proof paint and cooperation of fly ash and coating is the best.The pozzolanic effects,packing role and original capability of binding the chloride ion of fly ash are mainly responsible for the improvement of concrete's ability to resist chloride ions penetration.
中图分类号 TU528
所属栏目 试验研究
基金项目
收稿日期 2007/6/18
修改稿日期 2007/8/8
网络出版日期
作者单位点击查看
引用该论文: GU Kun-peng,LI Mo. Influence of Fly Ash and Coating on Chloride Ion Corrosion Resistance of Concrete[J]. Corrosion & Protection, 2008, 29(7): 385～388
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参考文献
【1】冯乃谦.高性能混凝土[M].北京:中国建筑工业出版社,1996.
【2】吴中伟,廉慧珍.高性能混凝土[M].北京:中国铁道出版社,1999.
【3】ASTM C1202-1997.Standard test method for electrical indication of concretes ability to resist chloride ion penetration[S].
【4】ACI Committee 234.Guide for the use of silica fume in concrete[R].ACI 234R-96.
【5】马保国,亓 萌,李宗津.香港粉煤灰特征与沿海工程耐久性[J].建筑材料学报,1999,2(1):26-28.
【6】Dhir R K,Jones M R.Development of chloride-resisting concrete using fly ash[J].Fuel,1999,78(2):137-142.
【2】吴中伟,廉慧珍.高性能混凝土[M].北京:中国铁道出版社,1999.
【3】ASTM C1202-1997.Standard test method for electrical indication of concretes ability to resist chloride ion penetration[S].
【4】ACI Committee 234.Guide for the use of silica fume in concrete[R].ACI 234R-96.
【5】马保国,亓 萌,李宗津.香港粉煤灰特征与沿海工程耐久性[J].建筑材料学报,1999,2(1):26-28.
【6】Dhir R K,Jones M R.Development of chloride-resisting concrete using fly ash[J].Fuel,1999,78(2):137-142.
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