Study on Single-Particle Crushing Strength-Size Effect of Recycled Aggregate

DOI

10.2991/978-94-6463-793-9_17How to use a DOI?

Keywords

road engineering; recycled aggregate; single particle crushing; Weibull distribution

Abstract

With the elevated production of municipal construction waste, the use of construction and demolition waste as recycled aggregate (RA) in the subgrade has become a sustainable and environmentally friendly disposal method. In order to reveal the single-particle crushing behavior of different recycled aggregates, particle scanning and single-particle crushing tests were carried out for recycled concrete aggregate (RCA) and recycled brick aggregate (RBA), which are the main components of recycled aggregates, to investigate their single-particle crushing modes, crushing strengths, and crushing energies, and the size effect of single-particle crushing strengths of recycled aggregates was analyzed by using the Weibull distribution function. The results show that: the single-particle crushing mode of recycled aggregate can be divided into single-peak, double-peak and multi-peak modes; recycled aggregate is mainly multi-peak crushing (64.17%); the larger the particle size of recycled aggregate particles is, the larger the peak force and crushing energy are, and the crushing stress decreases with the increase of the particle size; the peak force and crushing energy of RCA is significantly higher than that of RBA; and there is a size effect in both RCA and RBA; The crushing strength of single particles of RCA and RBA both satisfy the Weibull distribution better, and the Weibull modulus is 1.596 and 2.260 respectively, and the discrete shape of RCA is larger. The research results can provide theoretical basis for revealing the engineering construction of recycled aggregates.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Qingdong Gao
PY  - 2025
DA  - 2025/07/28
TI  - Study on Single-Particle Crushing Strength-Size Effect of Recycled Aggregate
BT  - Proceedings of the 2025 8th International Conference on Traffic Transportation and Civil Architecture (ICTTCA 2025)
PB  - Atlantis Press
SP  - 174
EP  - 186
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-793-9_17
DO  - 10.2991/978-94-6463-793-9_17
ID  - Gao2025
ER  -