地聚物再生混凝土抗压强度的离散性分析

doi:10.11896/cldb.23100132

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Abstract Prismatic geopolymeric recycled aggregate concrete (GRAC) specimens with a height-to-width ratio of 3 were prepared for the quasi-static compressive test. The specimens were designed with four different widths (70 mm, 100 mm, 150 mm, and 200 mm) and five distinct RCA replacement rates (0%, 30%, 50%, 70%, and 100%) to explore the influence of specimen size and recycled coarse aggregate (RCA) substitute rate on the compressive strength dispersion of GRAC. A predictive formula for the average compressive strength of different sizes of GRAC, considering the RCA substitute rate, was proposed based on the classical size effect law. The results showed that the compressive strength dispersion of GRAC decreased with an increase of specimen width. Furthermore, it was observed that the compressive strength dispersion of GRAC initially increased and then decreased as the RCA substitute rate increased. Additionally, a predictive formula for the compressive strength of GRAC with varying sizes and different RCA substitute rates, considering arbitrary reliability levels, was proposed based on the Weibull distribution model.

Key words： geopolymeric recycled aggregate concrete compressive strength dispersion recycled coarse aggregate substitute rate size effect Weibull distribution

Published: 10 January 2025 Online: 2025-01-10

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TU528

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	Articles by authors
	ZHOU Hongyuan
	MU Chongyuan
	WANG Xiaojuan
	LI Runlin
	CAO Wanlin

Cite this article:

ZHOU Hongyuan,MU Chongyuan,WANG Xiaojuan, et al. Investigation on Compressive Strength Dispersion of Geopolymeric Recycled Aggregate Concrete[J]. Materials Reports, 2025, 39(1): 23100132-8.

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https://www.mater-rep.com/EN/10.11896/cldb.23100132 OR https://www.mater-rep.com/EN/Y2025/V39/I1/23100132

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