EVA enhanced cementitious materials based coatings for the improvement of steel reinforcement corrosion protection performance

doi:10.1016/j.jobe.2023.107080

	EVA enhanced cementitious materials based coatings for the improvement of steel reinforcement corrosion protection performance
	Shang, Huaishuai 1; Hou, Guanhao 1,2; Sun, Congtao 2; Lu, Dongzhu 2; Zhao, Xia2 ; Fan, Liang 2
	2023-09-15
发表期刊	JOURNAL OF BUILDING ENGINEERING
卷号	75 页码:20
通讯作者	Fan, Liang(fanl@qdio.ac.cn)
摘要	Cement-based coatings with higher content of polymers have been demonstrated to provide en-hanced corrosion protection for steel reinforcement, however, they may reduce the bonding strength between steel bars and concrete. In this research, cementitious materials comprising ce -ment, silica fume, and fly ash with weight proportions ranging from 85% to 100% were used as the primary constituents of the cement-based coatings. EVA powder with weight fractions vary-ing from 0% to 15% and nano-silica with contents up to 1% are added to the coating formulation to promote coating performance. The results of electrochemical tests including linear polariza-tion resistance and electrochemical impedance spectroscopy show that addition of EVA powder, silica fume, and nano-silica can substantially increase and decrease the coating resistance and corrosion current density of the coated steel bar, respectively. When 15% EVA, 1% silica fume and 0.5% nano-silica are added to the coating formulation, the coating can provide the best anti-corrosion performance for the steel bar. The integrated polymer film shown in the SEM image and the undetected chloride ions at the vicinity of the coated steel bar obtained from EDS analysis also demonstrate the excellent protective performance of the cement-based coating against corro-sion.
关键词	Cement-based coating EVA Nano-silica Corrosion Steel bar
DOI	10.1016/j.jobe.2023.107080
收录类别	SCI
语种	英语
资助项目	Major Research Projects of Shandong Natural Science Foundation ; Qingdao Munic- ipal Science and Technology Benefit People Demonstration and Guidance Project ; [ZR2022ZD33]
WOS研究方向	Construction & Building Technology ; Engineering
WOS类目	Construction & Building Technology ; Engineering, Civil
WOS记录号	WOS:001058919600001
出版者	ELSEVIER
WOS关键词	FLY-ASH ; SILICA FUME ; MECHANICAL-PROPERTIES ; CONCRETE ; PARTICLES ; HYDRATION ; MORTARS
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/182907
专题	海洋环境腐蚀与生物污损重点实验室
通讯作者	Fan, Liang
作者单位	1.Qingdao Univ Technol, Sch Civil Engn, Qingdao 266033, Shandong, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Shang, Huaishuai,Hou, Guanhao,Sun, Congtao,et al. EVA enhanced cementitious materials based coatings for the improvement of steel reinforcement corrosion protection performance[J]. JOURNAL OF BUILDING ENGINEERING,2023,75:20.
APA	Shang, Huaishuai,Hou, Guanhao,Sun, Congtao,Lu, Dongzhu,Zhao, Xia,&Fan, Liang.(2023).EVA enhanced cementitious materials based coatings for the improvement of steel reinforcement corrosion protection performance.JOURNAL OF BUILDING ENGINEERING,75,20.
MLA	Shang, Huaishuai,et al."EVA enhanced cementitious materials based coatings for the improvement of steel reinforcement corrosion protection performance".JOURNAL OF BUILDING ENGINEERING 75(2023):20.