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

doi:10.16058/j.issn.1005-0930.2017.04.015

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Experimental Study of the Deterioration Mechanism of Concrete in Xining Saline Soil Area
	Qiao, Hongxia 1,2; Zhu, Binrong 1; Chen, Dingshan 1
刊名	Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering
	2017-08-01
卷号	25 期号:4 页码:805-815
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
ISSN号	10050930
DOI	10.16058/j.issn.1005-0930.2017.04.015
英文摘要	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.
语种	中文
出版者	Editorial Board of Journal of Basic Science and
内容类型	期刊论文
源URL	[http://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
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.