International Journal of Advanced Technology and Engineering Exploration ISSN (Print): 2394-5443    ISSN (Online): 2394-7454 Volume-12 Issue-129 August-2025
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Mechanical performance and structural feasibility of recycled aggregate concrete for sustainable construction

Esteban Bonifacio Machaca Mamani1 and Raul Alberto Garcia Castro2

Department of Mining Engineering,Faculty of Engineering, National University Jorge Basadre Grohmann,Tacna – Peru1
Department of Natural Sciences,Faculty of Education, National University Jorge Basadre Grohmann,Tacna – Peru2
Corresponding Author : Raul Alberto Garcia Castro

Recieved : 16-February-2025; Revised : 19-August-2025; Accepted : 20-August-2025

Abstract

The increasing volume of construction and demolition waste (CDW) poses a significant environmental challenge, contributing to soil contamination and landfill saturation. In this context, the reuse of recycled aggregates (RA) in structural concrete production offers a sustainable alternative. This study evaluates the mechanical performance of concrete with varying substitution levels of natural coarse aggregate (NCA) by recycled coarse aggregate (RCA) at 20%, 50%, and 100%, focusing on compressive strength. An experimental program was conducted using 36 cylindrical specimens prepared with both conventional and recycled aggregate concrete (RAC), designed to achieve a target characteristic compressive strength (f’c) of 210 kg/cm², in accordance with the Peruvian Technical Standard (NTP), the American Society for Testing and Materials (ASTM), and the American Concrete Institute (ACI). Compressive strength tests were carried out at 7, 14, and 28 days. The results revealed that a 20% RCA replacement level exceeded the control mix by 11.43%, while 50% replacement remained structurally viable with a 4.45% increase. However, full replacement (100%) resulted in a 2.73% reduction in strength, indicating a decline in mechanical performance. These findings suggest that up to 50% RCA, RA can be used in structural concrete without compromising mechanical integrity. Nonetheless, further studies on long-term durability and performance under aggressive environmental conditions are recommended to ensure safe large-scale implementation in the construction industry

Keywords

Construction and demolition waste, Recycled aggregate concrete, Compressive strength, Concrete mix design, Sustainability in construction, Mechanical performance.

Cite this article

Mamani EBM, Castro RAG. Mechanical performance and structural feasibility of recycled aggregate concrete for sustainable construction. International Journal of Advanced Technology and Engineering Exploration. 2025;12(129):1175-1189. DOI : 10.19101/IJATEE.2025.121220192

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