Influence of carbonation on chloride binding of mortars made with simulated marine sand

doi:10.1016/j.conbuildmat.2021.124455

	Influence of carbonation on chloride binding of mortars made with simulated marine sand
	Sun, Ming1,2,4 ; Sun, Congtao 1,2,3,4,5; Zhang, Peng2 ; Liu, Nazhen 1,3,4; Li, Yantao 1,3,4; Duan, Jizhou1,3,4 ; Hou, Baorong 1,3,4
	2021-10-11
发表期刊	CONSTRUCTION AND BUILDING MATERIALS
ISSN	0950-0618
卷号	303 页码:11
通讯作者	Sun, Congtao([email protected]) ; Zhang, Peng()
摘要	This study investigated the effects of carbonation on the chloride binding of mortars containing simulated marine sand. Various admixtures were added, and metakaolin (MK), fly ash (FA), nano-Al2O3 (NA), and aluminum (A) were considered as supplementary cementitious materials (SCMs) for use in mortars. Changes in free chloride content, total chloride content, bound chloride content, chloride binding rates, and pH values as a function of mortar depth were analyzed, and the effects of carbonation on the hydration products were also assessed. The results indicated that in the place of cement, SCMs could significantly increase the carbonation zone depth in mortar. The chloride ions migrated outward and inward under accelerated carbonation conditions in the mortar, generating two peak values for the chloride content in the mortars. Consequently, the incorporation of SCMs was beneficial for chloride ion migration in mortars under carbonation. Additionally, the bound chloride content and chloride binding rates were initially extremely low, then gradually increased, and finally stabilized with increased depth in the mortars under carbonation. Furthermore, the incorporation of SCMs resulted in the decreased chloride binding capacity of the mortars under accelerated carbonation, and Friedel's salt gradually decomposed with carbonation.
关键词	Chloride binding Carbonation Simulated marine sand SCMs Friedel's salt
DOI	10.1016/j.conbuildmat.2021.124455
收录类别	SCI
语种	英语
资助项目	Natural Science Key Foundation of Shandong Province[ZR2020KE046]; Basic Science Research Project of Nantong City[JC2020125]; National Natural Science Foundation of China for Exploring Key Scientific Instrument[41827805]; Strategic Priority Project of CAS[XDA13040402]
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
WOS类目	Construction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary
WOS记录号	WOS:000696949200006
出版者	ELSEVIER SCI LTD
引用统计	被引频次：17[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/176410
专题	海洋环境腐蚀与生物污损重点实验室
通讯作者	Sun, Congtao; Zhang, Peng
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China 2.Qingdao Univ Technol, Sch Civil Engn, Qingdao 266033, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China 4.Pilot Natl Lab Marine Sci & Technol Qingdao, Open Studio Marine Corros & Protect, Qingdao 266237, Peoples R China 5.Chinese Acad Sci, Nantong Res & Dev Ctr Marine Sci & Technol, Inst Oceanol, Nantong 226004, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所; 中国科学院海洋大科学研究中心
推荐引用方式 GB/T 7714	Sun, Ming,Sun, Congtao,Zhang, Peng,et al. Influence of carbonation on chloride binding of mortars made with simulated marine sand[J]. CONSTRUCTION AND BUILDING MATERIALS,2021,303:11.
APA	Sun, Ming.,Sun, Congtao.,Zhang, Peng.,Liu, Nazhen.,Li, Yantao.,...&Hou, Baorong.(2021).Influence of carbonation on chloride binding of mortars made with simulated marine sand.CONSTRUCTION AND BUILDING MATERIALS,303,11.
MLA	Sun, Ming,et al."Influence of carbonation on chloride binding of mortars made with simulated marine sand".CONSTRUCTION AND BUILDING MATERIALS 303(2021):11.

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