Experimental Study of the Deterioration Mechanism of Concrete in Xining Saline Soil Area

doi:10.16058/j.issn.1005-0930.2017.04.015

IR > 土木工程学院

	Experimental Study of the Deterioration Mechanism of Concrete in Xining Saline Soil Area
	Qiao, Hongxia1,2 ; Zhu, Binrong 1; Chen, Dingshan 1
	2017-08-01
发表期刊	Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering
ISSN	10050930
卷号	25 期号:4 页码:805-815
摘要	Durability experiments of different concrete specimens were conducted under multiple conditions. Combining the experimental data, relative mass evaluation parameter and relative dynamic elastic modulus evaluation parameter were selected as evaluating indicator to investigate the surface view, relative mass and relative dynamic elastic modulus variation of concrete. Meanwhile, scanning electron microscope, energy dispersive spectrum and X-ray diffraction were used to investigate the micro-mechanism and the mechanism of deterioration. The results show that evaluation parameter can better evaluate the damage process of concrete. The failure modes of concrete in Xining saline soil area are chemical corrosion and physical crystallization. Chemical corrosion has an accelerating effect on the deterioration of concrete. Interactions of two failure mode make concrete serious disruption. Main corrosion products are gypsum, calcium carbonate and thaumasite. Especially the thaumasite form of sulfate erosion is found in Xining saline soil area. Field exposed concretes in Xining area have been eroded by saline soil. Although the evaluation parameters changes in volatility, the concretes are still in early stage of degradation after 1 230 days. © 2017, The Editorial Board of Journal of Basic Science and Engineering. All right reserved.
关键词	Calcium carbonate Concretes Deterioration Durability Dynamics Elastic moduli Parameter estimation Scanning electron microscopy Silicate minerals Soils Sulfate minerals Underground corrosion Deterioration mechanism Field exposure Saline soil Sulfate attack Thaumasite
DOI	10.16058/j.issn.1005-0930.2017.04.015
收录类别	EI
语种	中文
出版者	Editorial Board of Journal of Basic Science and
EI入藏号	20174404326375
EI主题词	Failure (mechanical)
EI分类号	412 Concrete - 482.2 Minerals - 483.1 Soils and Soil Mechanics - 539.1 Metals Corrosion - 804 Chemical Products Generally - 951 Materials Science
来源库	Compendex
分类代码	412 Concrete - 482.2 Minerals - 483.1 Soils and Soil Mechanics - 539.1 Metals Corrosion - 804 Chemical Products Generally - 951 Materials Science
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/114555
专题	土木工程学院
作者单位	1.Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou; 730050, China
第一作者单位	甘肃省土木工程防灾减灾重点实验室
第一作者的第一单位	甘肃省土木工程防灾减灾重点实验室
推荐引用方式 GB/T 7714	Qiao, Hongxia,Zhu, Binrong,Chen, Dingshan. Experimental Study of the Deterioration Mechanism of Concrete in Xining Saline Soil Area[J]. Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering,2017,25(4):805-815.
APA	Qiao, Hongxia,Zhu, Binrong,&Chen, Dingshan.(2017).Experimental Study of the Deterioration Mechanism of Concrete in Xining Saline Soil Area.Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering,25(4),805-815.
MLA	Qiao, Hongxia,et al."Experimental Study of the Deterioration Mechanism of Concrete in Xining Saline Soil Area".Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering 25.4(2017):805-815.