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The effect of cations and metakaolin on chloride binding properties of mortars using simulated desalinated sea sand

文献类型：期刊论文

作者Sun, Congtao5; Geng, Yuanjie3,4; Zhang, Yuguo2; Sun, Ming5; Lu, Yihui3; Liu, Junyang; Duan, Jizhou1,5
刊名ADVANCES IN CEMENT RESEARCH
出版日期2025-04-17
页码10
关键词AFm phases cations chloride chloride binding C-S-H metakaolin simulated desalinated sea sand
ISSN号0951-7197
DOI10.1680/jadcr.24.00096
通讯作者Sun, Congtao(suncongtao@qdio.ac.cn) ; Zhang, Yuguo(1500560217@qq.com)
英文摘要With the scarcity of river sand resources, sea sand is also increasingly being used to prepare cementitious materials. Considering the threat of chloride salts still present in desalinated sea sand, this study investigates the effect of Na+, Mg2+, Ca2+ (contained on the surface of simulated desalinated sea sand) and metakaolin (MK) additions on the chloride binding properties of simulated desalinated sea sand mortar. The chloride binding capacity of the mortar and the hydration products of the mortar were analysed by chloride content measurement, X-ray diffraction, differential thermogravimetry, Fourier transform infrared spectroscopy and energy dispersive spectroscopy. The results show that Ca2+ and Mg2+ have a greater positive effect on improving the chloride binding capacity of mortar than Na+. This is because Ca2+ promotes the positive potential of the C-S-H gel in the mortar and Mg2+ facilitates the generation of a solid solution of Friedel's salts and AFm in the mortar. The addition of MK in mortar improves the physical binding ability of the mortar to chloride ions. This improvement is primarily attributed to the increased production of C-S-H gel and C-A-S-H gel resulting from the addition of MK. This study is expected to provide theoretical support to facilitate the application of desalinated sea sand.
WOS关键词C-S-H ; BOUND CHLORIDES ; CEMENT PASTES ; CAPACITY ; BEHAVIOR ; LIMESTONE ; IONS ; STABILITY ; DIFFUSION ; ALUMINUM
资助项目Natural Science Key Foundation of Shandong Province[ZR2020KE046] ; National Natural Science Foundation of China[52378276] ; National Natural Science Foundation of China[41827805]
WOS研究方向Construction & Building Technology ; Materials Science
语种英语
WOS记录号WOS:001467130600001
出版者EMERALD GROUP PUBLISHING LTD
源URL[http://ir.qdio.ac.cn/handle/337002/201596]  
专题海洋研究所_海洋腐蚀与防护研究发展中心
通讯作者Sun, Congtao; Zhang, Yuguo
作者单位1.Xian Univ Architecture & Technol, Sch Mat Sci & Engn, Xian, Peoples R China
2.Guangxi Acad Sci, Inst Marine Corros Protect, Guangxi Key Lab Marine Environm Sci, Nanning, Peoples R China
3.Inner Mongolia Univ Sci & Technol, Sch Civil Engn, Baotou, Peoples R China
4.China Construct Sixth Engn Bur Corp LTD, Tianjin, Peoples R China
5.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao, Peoples R China
推荐引用方式
GB/T 7714		 Sun, Congtao,Geng, Yuanjie,Zhang, Yuguo,et al. The effect of cations and metakaolin on chloride binding properties of mortars using simulated desalinated sea sand[J]. ADVANCES IN CEMENT RESEARCH,2025:10.
APA Sun, Congtao.,Geng, Yuanjie.,Zhang, Yuguo.,Sun, Ming.,Lu, Yihui.,...&Duan, Jizhou.(2025).The effect of cations and metakaolin on chloride binding properties of mortars using simulated desalinated sea sand.ADVANCES IN CEMENT RESEARCH,10.
MLA Sun, Congtao,et al."The effect of cations and metakaolin on chloride binding properties of mortars using simulated desalinated sea sand".ADVANCES IN CEMENT RESEARCH (2025):10.

入库方式： OAI收割

来源：海洋研究所

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