碱激发矿渣混凝土密实性超声无损检测法及其影响因素

doi:10.11896/cldb.22090243

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Abstract The effects of water-binder ratio, modulus, alkali concentration and coarse aggregate content on the compressive strength and ultrasonic velocity of alkali-activated slag concrete were investigated, and the relationships between concrete mix proportions and density, elastic modulus, porosity were analyzed to reveal the variation mechanism of ultrasonic velocity. The results show that the ultrasonic velocity of alkali-activated slag concrete with different mix proportions is positively proportional to the elastic modulus and inversely proportional to the density and porosity. Alkali-activated slag concrete can be approximated as a homogeneous solid material for modelling and calculation in the process of ultrasonic nondestructive testing, and the ultrasonic velocity is found to be linearly related to the compressive strength. Based on the theoretical analysis and experimental results, a model for calculating the compactness of alkali-activated slag concrete is established, which can be used as a reference for the compactness testing of alkali-activated slag concrete.

Key words： alkali-activated slag concrete compressive strength ultrasonic velocity non-destructive testing compactness

Published: Online: 2024-06-25

CLC number:

TU528

Fund:National Natural Science Foundation of China (52108199), the Natural Science Foundation of Guangxi (2021GXNSFBA075014), and the Guangxi Science and Technology Base and Talent Special Project (AD21238007).

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	Articles by authors
	LI Jing
	ZHANG Ling
	WANG Hao
	CHEN Ben
	CHEN Dongbin
	HUANG Ying
	CHEN Zheng

Cite this article:

LI Jing,ZHANG Ling,WANG Hao, et al. Ultrasonic Non-destructive Testing Method for the Compactness of Alkali-activated Slag Concrete and Its Influencing Factors[J]. Materials Reports, 2024, 38(11): 22090243-7.

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http://www.mater-rep.com/EN/10.11896/cldb.22090243 OR http://www.mater-rep.com/EN/Y2024/V38/I11/22090243

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