粉煤灰混凝土的抗碳化性能
Carbonation Resistance of Concrete Containing Fly Ash
摘 要
通过对抗压强度、孔隙率和碳化值的测定,研究了混凝土的抗碳化性能随粉煤灰掺量的变化情况.结果表明,粉煤灰的掺加可以提高混凝土密实度、改善孔结构,混凝土抗压强度和抗碳化性能随着粉煤灰掺量的上升而下降,且抗压强度与碳化值之间存在一定的相关性.
混凝土
孔隙率
抗碳化性能
fly ash
concrete
porosity
carbonation resistance
Abstract
The carbonation resistance of concrete with fly ash was studied by the testing of compressive strength,porosity and carbonation depth of concrete.The concrete with fly ash was more densified and the pore structure was improved.With the increase of fly ash content,the compressive strength and carbonation resistance of concrete decreased.There was certain correlation between the compressive strength and the carbonation depth.
中图分类号 TU528.0
所属栏目 试验研究
基金项目
收稿日期 2007/11/11
修改稿日期 2008/5/28
网络出版日期
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引用该论文: WU Ke-gang,XIE You-jun,DING Wei-wei,LI Shi-qiu. Carbonation Resistance of Concrete Containing Fly Ash[J]. Corrosion & Protection, 2008, 29(10): 596～598
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参考文献
【1】黄士元.粉煤灰混凝土的特性及其在混凝土制品中的应用(上)[J].混凝土与水泥制品,1991(1):27-29.
【2】Hobbs D W.Carbonation of concrete containing PFA[J].Magazine of Concrete Research,1994,46(166):35-38.
【3】Parrott L J.Variations of water absorption rate and porosity with depth from exposed concrete surface:effects of exposure conditions and cement type[J].Cement and Concrete Research,1992,22(6):1077-1088.
【4】Xu A,Sarkar S L,Nilsson L O.Effect of fly ash on the microstructure of cement mortar.Materials and Structures[J].1993,26(8/9):414-424.
【5】Dongxu Li,Yimin Chen,Jinlin Shen,et al.The influence of alkalinity on activation and microstructure of fly ash[J].Cement and Concrete Research,2000,30(6):881-886.
【6】许丽萍,黄士元.预测混凝土中碳化深度的数学模型[J].上海建材学院学报,1991,4(4):347-357.
【2】Hobbs D W.Carbonation of concrete containing PFA[J].Magazine of Concrete Research,1994,46(166):35-38.
【3】Parrott L J.Variations of water absorption rate and porosity with depth from exposed concrete surface:effects of exposure conditions and cement type[J].Cement and Concrete Research,1992,22(6):1077-1088.
【4】Xu A,Sarkar S L,Nilsson L O.Effect of fly ash on the microstructure of cement mortar.Materials and Structures[J].1993,26(8/9):414-424.
【5】Dongxu Li,Yimin Chen,Jinlin Shen,et al.The influence of alkalinity on activation and microstructure of fly ash[J].Cement and Concrete Research,2000,30(6):881-886.
【6】许丽萍,黄士元.预测混凝土中碳化深度的数学模型[J].上海建材学院学报,1991,4(4):347-357.
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