Study on the mechanism of sulfate attack and corrosion of hydraulic concrete buildings

	Study on the mechanism of sulfate attack and corrosion of hydraulic concrete buildings
	Hou, Huimin1 ; Xu, Cundong 2; Liu, Hui 2; Wang, Rongrong 2; Nie, Junkun 2
	2014
发表期刊	International Journal of Earth Sciences and Engineering
ISSN	09745904
卷号	7 期号:5 页码:2012-2017
摘要	Underground water with high salinity erodes and damages hydraulic concrete constructions in irrigation regions. This is one of the prime factors that have great impacts on water conveyance projects and safe operations in irrigation regions. Through field investigations and experimental analyses of the eroded constructions in typical irrigation regions, this paper probes into the underground water sulfate corrosion mechanism of hydraulic concrete constructions in irrigation regions. The experimental analysis indicates that the rich sulfate of underground water is one of the prime mediums that erode hydraulic concrete constructions in irrigation regions. The field investigations show that all the severely eroded constructions have obvious characteristics of sulfate corrosion. The theoretical analyses and experimental researches indicate that the major sulfate corrosion mechanism is the chemical reaction of the sulfate (Na2SO4, MgSO4 and CaSO4, etc.) in underground water that touches the buildings and some unstable or metastable matters within concrete such as Ca(OH)2, C3A and 3CaO·SiO2·3H2O, etc. The reactions generate new stable matter and the volume swells resulting in the inner stress concentration in concrete constructions and finally the destruction of structure. © 2014 CAFET-INNOVA TECHNICAL SOCIETY. All rights reserved.
关键词	Chemical analysis Concrete construction Concretes Corrosion Groundwater Irrigation
收录类别	EI
语种	英语
出版者	CAFET INNOVA Technical Society, 1-2-18/103, Mohini Mansion, Gagan Mahal Road,, Domalguda, Hyderabad, 500029, India
EI入藏号	20151700790828
EI主题词	Sulfur compounds
EI分类号	412 Concrete ; 444.2 Groundwater ; 539.1 Metals Corrosion ; 801 Chemistry ; 804 Chemical Products Generally ; 821.3 Agricultural Methods
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/151290
专题	能源与动力工程学院
作者单位	1.School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou, China; 2.School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou, China
第一作者单位	新能源学院
第一作者的第一单位	新能源学院
推荐引用方式 GB/T 7714	Hou, Huimin,Xu, Cundong,Liu, Hui,et al. Study on the mechanism of sulfate attack and corrosion of hydraulic concrete buildings[J]. International Journal of Earth Sciences and Engineering,2014,7(5):2012-2017.
APA	Hou, Huimin,Xu, Cundong,Liu, Hui,Wang, Rongrong,&Nie, Junkun.(2014).Study on the mechanism of sulfate attack and corrosion of hydraulic concrete buildings.International Journal of Earth Sciences and Engineering,7(5),2012-2017.
MLA	Hou, Huimin,et al."Study on the mechanism of sulfate attack and corrosion of hydraulic concrete buildings".International Journal of Earth Sciences and Engineering 7.5(2014):2012-2017.