PSI - Issue 45

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 45 (2023) 104–108

17th Asia-Pacific Conference on Fracture and Strength and the 13th Conference on Structural Integrity and Failure (APCFS 2022 & SIF 2022) Mesoscale analysis of rubber particle effect on compressive strength of crumb rubber mortar Huailiang Chen a , b , Danda Li a , Xing Ma a, * , Zheng Zhong c , El-Sayed Abd-Elaal a,d

a UniSA STEM, University of South Australia, Adelaide, SA 5065, Australia b School of Civil Engineering, Jiangsu College of Engineering and Technology, Nantong 226006, China c School of Science, Harbin Institute of Technology, Shenzhen 518055, China d Department of Structural Engineering, Mansoura University, Mansoura 35516, Egypt

© 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of Prof. Andrei Kotousov Abstract This research proposes a mesoscale model to investigate the effect of rubber particles on the mechanical behaviours of crumb rubber mortar (CRM). In this paper, CRM was viewed as a three-phase material consisting of rubber particles, mortar matrix, and interface transition zone (ITZ). Numerical simulations showed that the strength reduction was mainly affected by the rubber content. For CRM samples containing the same content of rubber but different particle distributions, the average compressive strength of the CRM model was similar, but with slightly different strength deviations. The numerical analysis also showed that idealizing the rubber particles as pores caused negligible errors in the compressive strength of the CRM. A prediction formula that could consider the increase in air content was proposed and used to calculate the simulation results of CRM, which deviated from the experimental values within an acceptable range. © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of Prof. Andrei Kotousov Keywords: Mesoscale modelling; Crumb rubber mortar (CRM); Compressive strength

* Corresponding author. Tel.: +61 8 830 23109. E-mail address: xing.ma@unisa.edu.au

2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of Prof. Andrei Kotousov

2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of Prof. Andrei Kotousov 10.1016/j.prostr.2023.05.020