硫酸铵腐蚀环境下的混凝土碳化深度试验研究与应用
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摘要
硫酸盐腐蚀是影响混凝土结构耐久性能的重要化学劣化因子之一。以赣南离子型稀土开采残留硫酸铵的环境问题为背景,通过实验室快速碳化试验研究硫酸铵溶液浓度对混凝土碳化深度的影响规律。结果表明:硫酸铵溶液浓度越大,相同强度等级的混凝土在相同碳化龄期的碳化深度与碳化速率越大。根据试验结果建立了硫酸铵腐蚀环境下混凝土碳化深度预测模型,对该环境下混凝土最小保护层厚度取值提出了建议。
Sulfate corrosion is one of the important chemical deterioration factors that influence the durability of concrete. Based on the environmental pollution of the residual ammonium sulfate resulted from mining rare earth in southern Jiangxi,the effect of the concentration ammonium sulfate solution on the concrete carbonation depth was studied by laboratory rapid carbonation test. The results show that the higher the concentration,the greater the carbonation depth and the carbonation rate of concrete with the same grade at the same carbonation age. According to the test,the prediction model of the concrete carbonation depth under the ammonium sulfate corrosion environment is established,and the value of the minimum thickness of concrete cover is suggested.
Sulfate corrosion is one of the important chemical deterioration factors that influence the durability of concrete. Based on the environmental pollution of the residual ammonium sulfate resulted from mining rare earth in southern Jiangxi,the effect of the concentration ammonium sulfate solution on the concrete carbonation depth was studied by laboratory rapid carbonation test. The results show that the higher the concentration,the greater the carbonation depth and the carbonation rate of concrete with the same grade at the same carbonation age. According to the test,the prediction model of the concrete carbonation depth under the ammonium sulfate corrosion environment is established,and the value of the minimum thickness of concrete cover is suggested.
引文
1金伟良,赵羽习.混凝土结构耐久性[M].2版.北京:科学出版社,2014Jin Weiliang,Zhao Yuxi.Durability of concrete structures[M].2nd ed.Beijing:Science Press,2014
2肖佳,勾成福.混凝土碳化研究综述[J].混凝土,2010(1):40-44Xiao Jia,Gou Chengfu.Overview of the research for concrete carbonation[J].Concrete,2010(1):40-44
3张誉.混凝土结构耐久性概论[M].上海:上海科学技术出版社,2003Zhang Yu.Introduction to the durability of concrete structures[M].Shanghai:Shanghai Scientific&Technical Publishers,2003
4张光辉.混凝土结构硫酸盐腐蚀研究综述[J].混凝土,2012(1):49-54Zhang Guanghui.Sulfate corrosion of concrete structure review[J].Concrete,2012(1):49-54
5袁斌,牛荻涛,王家滨,等.混凝土硫酸盐侵蚀及防护研究进展[J].混凝土,2017(3):59-62Yuan Bin,Niu Ditao,Wang Jiabin,et al.Research progress of concrete sulfate attack and protection[J].Concrete,2017(3):59-62
6方祥位,申春妮,杨德斌,等.混凝土硫酸盐侵蚀速度影响因素研究[J].建筑材料学报,2007,10(1):89-96Fang Xiangwei,Shen Chunni,Yang Debin,et al.Investigation of influence factor on the rate of concrete sulfate attack[J].Journal of Building Materials,2007,10(1):89-96
7邢明亮,关博文,陈拴发,等.硫酸盐腐蚀与疲劳荷载联合作用下混凝土劣化特性[J].建筑材料学报,2013,16(2):249-254Xing Mingliang,Guan Bowen,Chen Shuanfa,et al.Deterioration characteristics of concrete under sulfate erosion and fatigue load[J].Journal of Building Materials,2013,16(2):249-254
8段德峰,黄显冲,王晓川.受硫酸盐腐蚀混凝土微观结构分析[J].四川建筑科学研究,2015,41(2):202-207Duan Defeng,Huang Xianchong,Wang Xiaochuan.Microstructure analysis of concrete under sulfate corrosion[J].Sichuan Building Science,2015,41(2):202-207
9张志兴,张根亮,冷发光.5%硫酸铵溶液中混凝土应力腐蚀试验研究[J].中国建材科技,2002,11(3):26-30Zhang Zhixing,Zhang Genliang,Leng Faguang.Experimental study on stress corrosion of concrete in 5%ammonium sulfate solution[J].China Building Materials Science&Technology,2002,11(3):26-30
10邓通发,彭剑,欧阳斌,等.硫酸铵腐蚀混凝土性能劣化时变规律及预测[J].长江科学院院报,2016,33(7):126-131Deng Tongfa,Peng Jian,Ouyang Bin,et al.Regularity of compressive strength deterioration and grey prediction of concrete corrosion in ammonium sulfate solution[J].Journal of Yangtze River Scientific Research Institute,2016,33(7):126-131
11张定华.硫酸铵厂房和构筑物的腐蚀防护[J].腐蚀与防护,2002,23(1):28-29Zhang Dinghua.Effect of ammonium sulphate on corrosion of buildings and constructions and protection measures[J].Corrosion&Protection,2002,23(1):28-29
12李应超.硫酸铵母液泵基础的腐蚀与防腐[J].燃料与化工,2010,41(5):54-55Li Yingchao.Corrosion and corrosion prevention of ammonium sulfate liquor pump foundation[J].Fuel&Chemical Processes,2010,41(5):54-55
13中华人民共和国住房和城乡建设部.普通混凝土配合比设计规程:JGJ 55-2011[S].北京:中国建筑工业出版社,2011Ministry of Housing and Urban-Rural Development of the People's Republic of China.Specification for mix proportion design of ordinary concrete:JGJ 55-2011[S].Beijing:China Architecture&Building Press,2011
14中华人民共和国住房和城乡建设部.普通混凝土长期性能和耐久性能试验方法标准:GB/T 50082-2009[S].北京:中国建筑工业出版社,2010Ministry of Housing and Urban-Rural Development of the People's Republic of China.Standard for test methods of long-term performance and durability of ordinary concrete:GB/T 50082-2009[S].Beijing:China Architecture&Building Press,2010
15中华人民共和国住房和城乡建设部.混凝土结构设计规范:GB50010-2010[S].北京:中国建筑工业出版社,2011Ministry of Housing and Urban-Rural Development of the People's Republic of China.Code for design of concrete structures:GB50010-2010[S].Beijing:China Architecture&Building Press,2011
16曹明莉,丁言兵,郑进炫,等.混凝土碳化机理及预测模型研究进展[J].混凝土,2012(9):35-38Cao Mingli,Ding Yanbing,Zheng Jinxuan,et al.Overview the mechanism and forecast model of concrete carbonization[J].Concrete,2012(9):35-38
17龚洛书,苏曼青,王洪琳.混凝土多系数碳化方程及其应用[J].混凝土,1985(6):12-18Gong Luoshu,Su Manqing,Wang Honglin.Concrete multi-coefficient carbonization equation and its application[J].Concrete,1985(6):12-18
18阿列克谢耶夫.钢筋混凝土结构中钢筋腐蚀与保护[M].黄可信,吴兴祖,等,译.北京:中国建筑工业出版社,1983Aleksyev.Corrosion and protection of steel bars in reinforced concrete structures[M].Huang Kexin,Wu Xingzu,et al,translated.Beijing:China Architecture&Building Press,1983
2肖佳,勾成福.混凝土碳化研究综述[J].混凝土,2010(1):40-44Xiao Jia,Gou Chengfu.Overview of the research for concrete carbonation[J].Concrete,2010(1):40-44
3张誉.混凝土结构耐久性概论[M].上海:上海科学技术出版社,2003Zhang Yu.Introduction to the durability of concrete structures[M].Shanghai:Shanghai Scientific&Technical Publishers,2003
4张光辉.混凝土结构硫酸盐腐蚀研究综述[J].混凝土,2012(1):49-54Zhang Guanghui.Sulfate corrosion of concrete structure review[J].Concrete,2012(1):49-54
5袁斌,牛荻涛,王家滨,等.混凝土硫酸盐侵蚀及防护研究进展[J].混凝土,2017(3):59-62Yuan Bin,Niu Ditao,Wang Jiabin,et al.Research progress of concrete sulfate attack and protection[J].Concrete,2017(3):59-62
6方祥位,申春妮,杨德斌,等.混凝土硫酸盐侵蚀速度影响因素研究[J].建筑材料学报,2007,10(1):89-96Fang Xiangwei,Shen Chunni,Yang Debin,et al.Investigation of influence factor on the rate of concrete sulfate attack[J].Journal of Building Materials,2007,10(1):89-96
7邢明亮,关博文,陈拴发,等.硫酸盐腐蚀与疲劳荷载联合作用下混凝土劣化特性[J].建筑材料学报,2013,16(2):249-254Xing Mingliang,Guan Bowen,Chen Shuanfa,et al.Deterioration characteristics of concrete under sulfate erosion and fatigue load[J].Journal of Building Materials,2013,16(2):249-254
8段德峰,黄显冲,王晓川.受硫酸盐腐蚀混凝土微观结构分析[J].四川建筑科学研究,2015,41(2):202-207Duan Defeng,Huang Xianchong,Wang Xiaochuan.Microstructure analysis of concrete under sulfate corrosion[J].Sichuan Building Science,2015,41(2):202-207
9张志兴,张根亮,冷发光.5%硫酸铵溶液中混凝土应力腐蚀试验研究[J].中国建材科技,2002,11(3):26-30Zhang Zhixing,Zhang Genliang,Leng Faguang.Experimental study on stress corrosion of concrete in 5%ammonium sulfate solution[J].China Building Materials Science&Technology,2002,11(3):26-30
10邓通发,彭剑,欧阳斌,等.硫酸铵腐蚀混凝土性能劣化时变规律及预测[J].长江科学院院报,2016,33(7):126-131Deng Tongfa,Peng Jian,Ouyang Bin,et al.Regularity of compressive strength deterioration and grey prediction of concrete corrosion in ammonium sulfate solution[J].Journal of Yangtze River Scientific Research Institute,2016,33(7):126-131
11张定华.硫酸铵厂房和构筑物的腐蚀防护[J].腐蚀与防护,2002,23(1):28-29Zhang Dinghua.Effect of ammonium sulphate on corrosion of buildings and constructions and protection measures[J].Corrosion&Protection,2002,23(1):28-29
12李应超.硫酸铵母液泵基础的腐蚀与防腐[J].燃料与化工,2010,41(5):54-55Li Yingchao.Corrosion and corrosion prevention of ammonium sulfate liquor pump foundation[J].Fuel&Chemical Processes,2010,41(5):54-55
13中华人民共和国住房和城乡建设部.普通混凝土配合比设计规程:JGJ 55-2011[S].北京:中国建筑工业出版社,2011Ministry of Housing and Urban-Rural Development of the People's Republic of China.Specification for mix proportion design of ordinary concrete:JGJ 55-2011[S].Beijing:China Architecture&Building Press,2011
14中华人民共和国住房和城乡建设部.普通混凝土长期性能和耐久性能试验方法标准:GB/T 50082-2009[S].北京:中国建筑工业出版社,2010Ministry of Housing and Urban-Rural Development of the People's Republic of China.Standard for test methods of long-term performance and durability of ordinary concrete:GB/T 50082-2009[S].Beijing:China Architecture&Building Press,2010
15中华人民共和国住房和城乡建设部.混凝土结构设计规范:GB50010-2010[S].北京:中国建筑工业出版社,2011Ministry of Housing and Urban-Rural Development of the People's Republic of China.Code for design of concrete structures:GB50010-2010[S].Beijing:China Architecture&Building Press,2011
16曹明莉,丁言兵,郑进炫,等.混凝土碳化机理及预测模型研究进展[J].混凝土,2012(9):35-38Cao Mingli,Ding Yanbing,Zheng Jinxuan,et al.Overview the mechanism and forecast model of concrete carbonization[J].Concrete,2012(9):35-38
17龚洛书,苏曼青,王洪琳.混凝土多系数碳化方程及其应用[J].混凝土,1985(6):12-18Gong Luoshu,Su Manqing,Wang Honglin.Concrete multi-coefficient carbonization equation and its application[J].Concrete,1985(6):12-18
18阿列克谢耶夫.钢筋混凝土结构中钢筋腐蚀与保护[M].黄可信,吴兴祖,等,译.北京:中国建筑工业出版社,1983Aleksyev.Corrosion and protection of steel bars in reinforced concrete structures[M].Huang Kexin,Wu Xingzu,et al,translated.Beijing:China Architecture&Building Press,1983