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Concrete ’ s Resistance to Acide Rain and Its Mechanism


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Concrete ’ s Resistance to Acide Rain and Its Mechanism
SHI Li-an12MA Hai-yan1KE Kai3
1.Department of Civil Engineering,Nanjing University of Aeronautics & Astronautics,Nanjing 210016,China; 2.Department of Building Engineering,Zhejiang College of Construction,Hangzhou 311231,China; 3.School of Material Science and Engineering,Wuhan Univer
acid rain polypropylene fibers pore structures hydration products
In order to evaluate the durability of concrete constructions exposed to acid rain,such properties of concrete corroded by acid rain are investigated here as compressive strength,flexural strength and resistance to impact.By means of X ray diffraction(XRD),mercury intrusion poremeasurement(MIP),scanning electron microscope(SEM)and energy dispersive spectrometer(EDS),mechanism of fly ash,expansive agent and polypropylene fiber are investigated.Microstructure and porosity characteristics of hydrated products before and after corrosion are also examined.The results indicate that the polypropylene fiber reinforced concrete incorporated with fly ash and expansion agent exhibit better anti acid rain corrosion performance than other mixes.The hydration products of the reference sample are easily converted to gypsum and SiO2·nH2O under the action of acid rain.Microstructure of concrete adding admixture is denser so as to effectively prevent concrete damage induced by acid rain.


[1] 范进,董福兴. 疲劳荷载下钢筋锈蚀混凝土构件粘结性能试验研究[J]. 南京理工大学学报,2009,33 ( 6) : 734-737.
Fan Jin,Dong Fuxing. Bond-slip fatigue experimental study on corroded reinforcement concrete members under cyclic loading[J]. Journal of Nanjing University of Science and Technology, 2009, 33( 6) : 734-737.
[2] 钱桂枫,高祥彪,钱春香. PVA 纤维对混凝土力学性能的影响[J]. 混凝土与水泥制品,2010,6 ( 3) : 52 -54.
Qian Guifeng,Gao Xiangbiao,Qian Chunxiang. Effect on mechanical properties of PVA fiber reinforced strength concrete [J]. China Concrete and Cement Products, 2010,6 ( 3) : 52-54.
[3] 郑文忠,赵军卫,张博一. 活性粉末混凝土局压承载力试验与分析[J]. 南京理工大学学报,2008,32 ( 3) : 381-386.
Zheng Wenzhong, Zhao Junwei, Zhang Boyi. Experiment and analysis of local compression bearing capacity of reactive powder concrete[J]. Journal of Nanjing University of Science and Technology,2008, 32( 3) : 381-386.
[4] Sakr K. Effect of cement type on the corrosion of reinforcing steel bars exposed to acidic media using electrochemica1 techniques[J]. Cement and ConcreteResearch, 2005, 35( 9) : 1820-1826
[5] Malek R I. The contribution of class-F fly ash to the strength of cementitious mixtures[J]. Cement and Concrete Research, 200535( 2) : 1152-1154.
[6] 李响,阎培渝. 粉煤灰掺量对水泥孔溶液碱度与微观结构的影响[J]. 建筑材料学报, 2010, 26( 6) : 787 -791.
Li Xiang,Yan Peiyu. Influence of fly ash content on alkalinity of pore solution and microstructure of cement pastes[J]. Journal of Builiding Materials,2010,26 ( 6) : 787-791.
[7] 本斯迪德J. 水泥的结构与性能[M]. 廖欣,译. 北京: 化学工业出版社, 2008: 592-595.
[8] 阎培渝. 复合胶凝材料水化过程中Ca( OH) 2 量的变化[J]. 建筑材料学报, 2010, 13( 5) : 564-567.
Yan Peiyu. Alteration of Ca( OH) 2 content during hydration process of composite binders[J]. Journal of Builiding Materials, 2010 13( 5) : 564-567.
[9] 张士萍,邓敏,吴建华,等. 某机场道肩混凝土损伤原因分析[J]. 建筑材料学报, 2007, 10( 5) : 516-521.
Zhang Shiping,Deng Min,Wu Jianhua, et al. Analysis of causes for destruction of an airport runway shoulder[J]. Journal of Builiding Materials, 2007, 10( 5) : 516-521.


Last Update: 2012-10-12