水泥基材料的硫酸盐侵蚀
Sulfate Corrosion of Cement-based Materials
摘 要
水泥基材料的硫酸盐侵蚀是其耐久性研究的一个重要方面.钙矾石、石膏以及碳硫硅钙石的生成是水泥基材料硫酸盐侵蚀的主要破坏形式,水泥基材料的化学成分和内部孔隙结构以及外界环境的硫酸盐浓度决定了水泥基材料的硫酸盐侵蚀类型.本文分析了水泥基材料在硫酸盐环境下钙矾石、石膏以及碳硫硅钙石的形成条件和机理,比较了各自硫酸盐侵蚀类型的主要破坏形式.
硫酸盐侵蚀
耐久性
Cement-based material
Sulfate attack
Durability
Abstract
The sulfate corrosion is an important research aspect of cement-based material′s durability.The formation of ettringite,gypsum and thaumasite is the major sulfate corrosion mode of cement-based materials.The chemical composition,pore structure of the cement-based materials and sulfate concentration in external environment decide the type of sulfate corrosion.The formation conditions and mechanism of ettringite,gypsum and thaumasite are analyzed and the primary forms of corrosion damage are compared.
中图分类号 TU528.01
所属栏目 专论
基金项目
收稿日期 2008/6/4
修改稿日期 2008/6/19
网络出版日期
作者单位点击查看
备注王建华,硕士.
引用该论文: WANG Jian-hua,XIAO Jia,ZHAO Jin-hui. Sulfate Corrosion of Cement-based Materials[J]. Corrosion & Protection, 2009, 30(6): 432～436
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参考文献
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【3】S M Clark,B Colas,M Kunz,et al.Effect of pressure on the crystal structure of ettringite[J].Cement and Concrete Research,2008,38:19-26.
【4】Michael Thomas,Kevin Folliard,Thano Drimalas,et al.Diagnosing delayed ettringite formation in concrete structures[J].Cement and Concrete Research,2008,38:841-847.
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【9】王善拔,季尚行,刘银江.碱对硫铝酸盐水泥膨胀性能的影响[J].硅酸盐学报,1986,14(3):285-293.
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【14】M Santhanam,M D Cohen,J Olek.Effects of gypsum formation on the performance of cement mortars during external sulfate attack[J].Cement and Concrete Research,2003(33):325-332.
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【19】J Bensted.Thaumasite-direct,woodfordite and other possible formation routes[J].Cement and Concrete Composite,2003,25:873-877.
【20】M E Gage,N J Crammond.The formation of thaumasite in a cement-lime-sand mortar exposed to cold magnesium and potassium sulfate solution[J].Cement and Concrete Composite,2000,22:209-222.
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【22】P Nobst,J Stark.Investigations on the influence of cement type on thaumasite formation[J].Cement and Concrete Composite,2003,25:899-906.
【23】J Aguilera,S Martinez-Ramirez,I Pajares-Colomo,et al.Formation of thaumasite in carbonated mortars[J].Cement and Concrete Composite,2003,25:991-996.
【24】D D Higgins,N J Crammond.Resistance of concrete containing ggbs to the thaumasite form of sulfate attack[J].Cement and Concrete Composites,2003,25:921-929.
【25】P Hagelia,R G Sibbick,N J Crammond,et al.Thaumasite and secondary calcite in some Norwegian concretes[J].Cement and Concrete Composites,2003,25:1131-1140.
【2】S Speziale,et al.Single-crystal elastic constants of natural ettringite[J].Cement and Concrete Research,Available online,2008(4).
【3】S M Clark,B Colas,M Kunz,et al.Effect of pressure on the crystal structure of ettringite[J].Cement and Concrete Research,2008,38:19-26.
【4】Michael Thomas,Kevin Folliard,Thano Drimalas,et al.Diagnosing delayed ettringite formation in concrete structures[J].Cement and Concrete Research,2008,38:841-847.
【5】Mehta P K.Mechanism of expansion associated with ettringite formation[J].Cement and Concrete Research,1973(3):1-6.
【6】Sommer.高性能混凝土的耐久性[M].科学出版社,1998.
【7】游宝坤,席耀忠.钙矾石的物理化学性能与混凝土的耐久性[J].中国建材科技,2002(3):13-18.
【8】彭家惠,楼宗汉.钙矾石形成机理的研究[J].硅酸盐学报,2000(6):511-515.
【9】王善拔,季尚行,刘银江.碱对硫铝酸盐水泥膨胀性能的影响[J].硅酸盐学报,1986,14(3):285-293.
【10】E Alvarez-Ayuso,H W Nugteren.Synthesis of ettringite;a way to deal with the acid wastewaters of aluminium anodising industry[M].Water Research,2005:65-72.
【11】HFW Taylor.Cement Chemistry 2nd edition[M].Academic Press,1997.
【12】Christophe Auvray,Francoise Homand,Dashnor Hoxha.The influence of relative humidity on the rate of convergence in an underground gypsum mine[J].International Journal of Rock Mechanics & Mining Sciences,Available online,2008(4).
【13】R Tixier.Modeling of damage in cement-based materials subjected to external sulfate attack.I;Comparison with Experiments[J].Journal of Materials in Civil Engineering,2003:314-332.
【14】M Santhanam,M D Cohen,J Olek.Effects of gypsum formation on the performance of cement mortars during external sulfate attack[J].Cement and Concrete Research,2003(33):325-332.
【15】W C Hansen.Attack on portland cement concrete by alkali soil and water-A critical review[J].Highway Research Record,1966,113:1-32.
【16】Sahu S,Badger S,Thaulow N.Evidence of thaumasite formation in Southern California concrete[J].Cement and Concrete Composite,2002,24:379-384.
【17】邓德华,肖佳,元强,等.水泥基材料中的碳硫硅钙石[J].建筑材料学报,2005,8(4):400-408.
【18】Hartshorn S A,Sharp J H,Swamy R N.The thaumasite form of sulfate attack in Portland-limestone cement mortars stored in magnesium sulfate solution[J].Cement and Concrete Composite,2002,24:35l-359.
【19】J Bensted.Thaumasite-direct,woodfordite and other possible formation routes[J].Cement and Concrete Composite,2003,25:873-877.
【20】M E Gage,N J Crammond.The formation of thaumasite in a cement-lime-sand mortar exposed to cold magnesium and potassium sulfate solution[J].Cement and Concrete Composite,2000,22:209-222.
【21】邓德华,肖佳,元强,等.水泥基材料的碳硫硅钙石型硫酸盐侵蚀(TSA)[J].建筑材料学报,2005,8(5):532-541.
【22】P Nobst,J Stark.Investigations on the influence of cement type on thaumasite formation[J].Cement and Concrete Composite,2003,25:899-906.
【23】J Aguilera,S Martinez-Ramirez,I Pajares-Colomo,et al.Formation of thaumasite in carbonated mortars[J].Cement and Concrete Composite,2003,25:991-996.
【24】D D Higgins,N J Crammond.Resistance of concrete containing ggbs to the thaumasite form of sulfate attack[J].Cement and Concrete Composites,2003,25:921-929.
【25】P Hagelia,R G Sibbick,N J Crammond,et al.Thaumasite and secondary calcite in some Norwegian concretes[J].Cement and Concrete Composites,2003,25:1131-1140.
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