冲磨作用下低热水泥混凝土时变行为及其影响因素研究

doi:10.11896/cldb.21110020

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Abstract Low heat portland cement is widely employed as the main material in hydraulic concrete, where much attention should be paid to the abrasion performance. In this work, mass loss rate, abrasion resistance, abrasion depth, volume loss, fractal dimension of low heat cement concrete at different wearing periods were determined through underwater method. Accordingly, the time-varying process of abrasion morphology of concrete was analyzed, and the impacts of cement hydration products and C-S-H gel structures on the abrasion resistance of concrete were revealed. The results indicate that the abrasion resistance of low heat cement concrete is better than that of ordinary portland cement concrete for its low content of Ca(OH)₂ and highly polymerized C-S-H gel, and decreases with the increase of fly ash content, while is not significantly improved after adding slag powder and silica fume. Abrasion rate of concrete is related to its irregularity of wearing surface, whose fractal dimension increases with the extension of wearing duration, and gradually becomes stable when it increases to about 2.6, which could better characterize the early abrasion degree of concrete.

Key words： low heat cement concrete abrasion abrasion morphology fractal dimension C-S-H gel

Published: 25 August 2023 Online: 2023-08-14

CLC number:

TU528

Fund:Project of Scientific Research Cultivation Plan for High-level Talents in Xinjiang Agricultural University(2522GCCRC) and Training Project of Outstanding Young Scientific and Technological Talents in Xinjiang Uygur Autonomous Region (2020Q017).

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	Articles by authors
	JIANG Chunmeng
	GONG Jingwei
	JIANG Linhua
	CHEN Cheng
	TANG Xinjun

Cite this article:

JIANG Chunmeng,GONG Jingwei,JIANG Linhua, et al. Research on Time-varying Behavior and Its Influence Factors of Low Heat Cement Concrete Under Abrasion[J]. Materials Reports, 2023, 37(16): 21110020-6.

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http://www.mater-rep.com/EN/10.11896/cldb.21110020 OR http://www.mater-rep.com/EN/Y2023/V37/I16/21110020

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