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氯离子对碳硫硅钙石形成的影响

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Abstract:

研究了氯离子对碳硫硅钙石形成的影响,将水泥-石灰石粉净浆样品浸泡在(5±2)℃不同质量分数的NaCl/Na2SO4复合溶液中,观察侵蚀后样品的外观,并对腐蚀产物进行X射线衍射、红外光谱分析。结果表明纯Na2SO4溶液中的样品发生碳硫硅钙石型硫酸盐侵蚀,腐蚀产物以碳硫硅钙石及石膏为主,随着时间的延长而日益严重,由表及里逐渐变为一种无胶凝性的烂泥状物质。NaCl/Na2SO4复合溶液中样品的硫酸盐侵蚀程度和腐蚀产物中碳硫硅钙石量随氯离子浓度的提高而逐渐降低。氯离子减缓了碳硫硅钙石的形成速度,并且氯离子浓度越高减缓效果越显著。

References

[1]  SKAROPOULOU A, TSIVILIS S, KAKALI G, et al. Long term behavior of Portland limestone cement mortars exposed to magnesium sulfate attack [J]. Cem Concr Compos, 2009, 31(9): 628-636. [2] 李长成, 姚燕, 王玲. 内掺硫酸镁加速水泥基材料TSA破坏[J]. 硅酸盐学报, 2010, 38(7): 47-50. LI Changcheng, YAO Yan, WANG Ling. J Chin Ceram Soc (in Chinese), 2010, 38(7): 47-50. [3] 高礼雄, 姚燕, 王玲. 温度对碳硫硅钙石形成的影响[J]. 硅酸盐学报, 2005, 33(4): 525-527. GAO Lixiong, YAO Yan, WANG Ling. J Chin Ceram Soc (in Chinese), 2005, 33(4): 525-527. [4] SIBBIVK T, FENN D, CRAMMOND N. The occurrence of thaumasite as a product of seawater attack [J]. Cem Concr Compos, 2003, 25(8): 1059-1066. [5] JUSTNES H, RODUM E. Case studies of thaumasite formation [J]. Aci Spec Pub, 2006, 234: 521-538. [6] 胡明玉, 唐明述, 龙伏梅. 新疆永安坝混凝土的碳硫硅钙石型硫酸盐腐蚀[J]. 混凝土, 2004, 181(11): 5-7. HU Mingyu, TANG Mingshu, LONG Fumei. Concrete (in Chinese), 2004, 181(11): 5-7. [7] YAMADA K, ICHIKAWA M, HONMA K, et al. Possibility of thaumasite formation in marine environments [J]. ACI Spec Publ, 2006, 234: 507-520. [8] SOTIRIADIS K, NIKOLOPOULOU E, TSIVILIS S. The effect of chloride on the Thaumasite form of sulfate attack in lime stone cement concrete [J]. Mater Sci Forum, 2010, 636-637: 1349-1354. [9] SLATER D, KNIGHTS J C, WIMPENNY D E. Sulfate and chloride profiles and the visual characteristics with depth from the face in buried concrete subject to TSA [C]//Proceedings of the First International Conferemce on Thaumasite in Cementitious Materials, London, 2002. [10] ROMER M, HOLZER L, PFIFFNER M. Swiss tunnel structures: concrete damage by formation of thaumasite [J]. Cem Concr Compos, 2003, 25 (8): 1111-1117. [11] BARNETT S J, MACPHEE D E, LACHOWSHI E E, et al. XRD, EDX and IR analysis of solid solutions between thaumasite and ettringite [J]. Cem Concr Compos, 2002, 32(5): 719-730. [12] BENSTED J. Thaumasite-background and nature in deterioration of cements mortars and concretes [J]. Cem Concr Compos, 1999, 21(2): 117-121. [13] ENSTED J. Thaumasite-direct, woodfordite and other possible formation routes [J]. Cem Concr Compos, 2003, 25(8): 873-877. [14] OMAR S B, MOHAMMED M, YASER A B. Role of chloride ions on expansion and strength reduction in plain and blended cements in sulfate environments [J]. Constr Build Mater, 1995, 9(1): 25-33. [15] 肖佳, 赵金辉, 陈雷, 等. 水泥-石灰石粉胶凝材料在硫酸盐和氯盐共同作用下的腐蚀破坏[J]. 混凝土, 2009, 231: 32-35. XIAO Jia, ZHAO Jinhui, CHEN Lei, et al. Concrete (in Chinese), 2009, 231: 32-35. [16] 金祖权, 孙伟, 张云升, 等. 混凝土在硫酸盐、氯盐溶液中的损伤过程[J]. 硅酸盐学报, 2006, 34(5): 630-635. JIN Zuquan, SUN Wei, ZHANG Yunsheng, et al. J Chin Ceram Soc (in Chinese), 2006, 34(5): 630-635.

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