Damage model of fresh concrete in sulphate environment

doi:10.1007/s11771-015-2622-7

	Damage model of fresh concrete in sulphate environment
	Zhang, JS; Zhang, YH; Feng, LP; Jin, DB; Wang, CC; Dong, QY; Zhang, JS (reprint author), Minist Educ, Key Lab Mech Disaster & Environm Western China, Lanzhou 730000, Peoples R China.
刊名	JOURNAL OF CENTRAL SOUTH UNIVERSITY
	2015
卷号	22 期号:3 页码:1104-1113
关键词	fresh concrete sulphate corrosion corrosion coefficient computational model
ISSN号	2095-2899
DOI	10.1007/s11771-015-2622-7
文献子类	Article
英文摘要	A model of damage to fresh concrete in a corrosive sulphate environment was formulated to investigate how and why the strength of corroded concrete changes over time. First, a corroded concrete block was divided into three regions: an expanded and dense region; a crack-development region; and a noncorroded region. Second, based on the thickness of the surface corrosion layer and the rate of loss of compressive strength of the corroding region, a computational model of the concrete blocks’ corrosion-resistance coefficient of compressive strength in a sulphate environment was generated. Third, experimental tests of the corrosion of concrete were conducted by immersing specimens in a corrosive medium for 270 d. A comparison of the experimental results with the computational formulae shows that the calculation results and test results are in good agreement. A parameter analysis reveals that the corrosion reaction plays a major role in the corrosion of fresh concrete containing ordinary Portland cement, but the diffusion of the corrosion medium plays a major role in the corrosion of concrete mixtures containing fly ash and sulphate-resistant cement. Fresh concrete with a high water-to-cement ratio shows high performance during the whole experiment process whereas fresh concrete with a low water-to-cement ratio shows poor performance during the late experiment period.
学科主题	Metallurgy & Metallurgical Engineering
出版地	HUNAN
资助项目	国家自然科学基金项目
项目编号	National Natural Science Foundation of China [51078176] ; Construction Science and Technology Research Project in Gansu Province, China [JK2010-58]
语种	英语
CSCD记录号	CSCD:5405592
WOS记录号	WOS:000351290200039
资助机构	NSFC ; GSSTD
内容类型	期刊论文
源URL	[http://ir.lzu.edu.cn/handle/262010/144457]
专题	土木工程与力学学院_期刊论文
通讯作者	Zhang, JS (reprint author), Minist Educ, Key Lab Mech Disaster & Environm Western China, Lanzhou 730000, Peoples R China.
推荐引用方式 GB/T 7714	Zhang, JS,Zhang, YH,Feng, LP,et al. Damage model of fresh concrete in sulphate environment[J]. JOURNAL OF CENTRAL SOUTH UNIVERSITY,2015,22(3):1104-1113.
APA	Zhang, JS.,Zhang, YH.,Feng, LP.,Jin, DB.,Wang, CC.,...&Zhang, JS .(2015).Damage model of fresh concrete in sulphate environment.JOURNAL OF CENTRAL SOUTH UNIVERSITY,22(3),1104-1113.
MLA	Zhang, JS,et al."Damage model of fresh concrete in sulphate environment".JOURNAL OF CENTRAL SOUTH UNIVERSITY 22.3(2015):1104-1113.