阳离子对石灰石-煅烧黏土水泥净浆氯离子结合能力的影响

doi:10.11896/cldb.23110226

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Abstract Immersion experiments of hardened LC³ paste particles, which prepared by limestone, calcined clay, and cement, were carried out in diffe-rent concentrations of NaCl, CaCl₂ and MgCl₂ solutions to investigate the changing law of the chloride ion concentration in the immersion solution, the physical composition, and the microstructure of the LC³ paste particles with the immersion time. The effect of different cations, such as Na⁺, Ca²⁺ and Mg²⁺ on the chloride binding capacity of LC³ paste were also analyzed. The results showed that the effect of the three cations on the chloride binding capacity of LC³ paste was Mg²⁺ ＞ Ca²⁺ ＞ Na⁺. Mg²⁺ and Ca²⁺ can promote the formation of Friedel's salt, which can improve the chemical binding capacity of chlorides in LC³ paste. Ca²⁺ can influence the content and structure of C-(A)-S-H gel to increase its physical adsorption capacity of chlorides. When the concentration of Mg²⁺ is higher, M-S-H gel can be formed to resulting in a decrease of the physical adsorption capacity of chlorides, but Na⁺ has no apparent influence on the physical adsorption capacity of chlorides.

Key words： LC³ cation chloride ion chemical binding capacity physical adsorption capacity.

Published: 10 February 2025 Online: 2025-02-05

CLC number:

TU528.01

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	Articles by authors
	WANG Shuqi
	ZUO Xiaobao
	ZOU Yuxiao
	LIU Jiayuan

Cite this article:

WANG Shuqi,ZUO Xiaobao,ZOU Yuxiao, et al. Influence of Cation on the Chloride Binding Capacity of Limestone Calcined Clay Cement Paste[J]. Materials Reports, 2025, 39(3): 23110226-8.

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http://www.mater-rep.com/EN/10.11896/cldb.23110226 OR http://www.mater-rep.com/EN/Y2025/V39/I3/23110226

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