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Durability performance of concrete containing recycled coarse aggregates derived from laboratory-tested specimens

Emel Ken D. Benito (Department of Civil Engineering, University of the Philippines Los Baños, Los Baños, Philippines)
Ariel Miguel M. Aragoncillo (Department of Civil Engineering, University of the Philippines Los Baños, Los Baños, Philippines and Department of Civil and Environmental Engineering, Rowan University, Glassboro, New Jersey, USA)
Francis Augustus A. Pascua (Zinfra Pty Ltd North Sydney, New South Wales, Australia)
Jules M. Juanites (IHG Hotels and Resorts, Makati City, Philippines)
Maricel A. Eneria (Department of Civil Engineering, University of the Philippines Los Baños, Los Baños, Philippines and Department of Civil and Infrastructure Engineering, Asian Institute of Technology, Bangkok, Thailand)
Richelle G. Zafra (Department of Civil Engineering, University of the Philippines Los Baños, Los Baños, Philippines)
Marish S. Madlangbayan (Department of Civil Engineering, University of the Philippines Los Baños, Los Baños, Philippines)

World Journal of Engineering

ISSN: 1708-5284

Article publication date: 18 April 2023

Issue publication date: 26 April 2024

240

Abstract

Purpose

The durability of concrete containing recycled aggregates, sourced from concrete specimens that have been tested in laboratory testing facilities, remains understudied. This paper aims to present the results of experiments investigating the effect of incorporating such type of concrete waste on the strength and durability-related properties of concrete.

Design/methodology/approach

A total of 77 concrete cylinders sized Ø100 × 200 mm with varying amount of recycled concrete aggregate (RCA) (0%–100% by volume, at 25% increments) and maximum aggregate size (12.5, 19.0 and 25.0 mm) were fabricated and tested for slump, compressive strength, sorptivity and electrical resistivity. Disk-shaped specimens, 50-mm thick, were cut from the original cylinders for sorptivity and resistivity tests. Analysis of variance and post hoc test were conducted to detect statistical variability among the data.

Findings

Compared to regular concrete, a reduction of slump (by 18.6%), strength (15.1%), secondary sorptivity (31.5%) and resistivity (17.0%) were observed from concrete containing 100% RCA. Statistical analyses indicate that these differences are significant. In general, an aggregate size of 19 mm was found to produce the optimum value of slump, compressive strength and sorptivity in regular and RCA-added concrete.

Originality/value

The results of this study suggest that comparable properties of normal concrete were still achieved by replacing 25% of coarse aggregate volume with 19-mm RCA, which was processed from laboratory-tested concrete samples. Therefore, such material can be considered as a potential and sustainable alternative to crushed gravel for use in light or nonstructural concrete construction.

Keywords

Citation

Benito, E.K.D., Aragoncillo, A.M.M., Pascua, F.A.A., Juanites, J.M., Eneria, M.A., Zafra, R.G. and Madlangbayan, M.S. (2024), "Durability performance of concrete containing recycled coarse aggregates derived from laboratory-tested specimens", World Journal of Engineering, Vol. 21 No. 3, pp. 604-614. https://doi.org/10.1108/WJE-02-2023-0033

Publisher

:

Emerald Publishing Limited

Copyright © 2023, Emerald Publishing Limited

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