Recycled Concrete in Foundations: Mechanical and Environmental Insights

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21720%2F25%3A00384745" target="_blank" >RIV/68407700:21720/25:00384745 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.3390/buildings15081237" target="_blank" >https://doi.org/10.3390/buildings15081237</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/buildings15081237" target="_blank" >10.3390/buildings15081237</a>

Result language

angličtina

Original language name

Recycled Concrete in Foundations: Mechanical and Environmental Insights

Original language description

Recycled aggregate concrete (RAC) has significant potential for sustainable construction; however, concerns regarding its mechanical performance and environmental impact persist. This study evaluates 26 RAC mixtures with varying cement content, water–cement ratios, and recycled aggregate replacement levels (30%, 50%, and 100%) using two distinct recycling processes. The results confirm that while RAC exhibits a decline in mechanical properties compared to natural aggregate concrete (NAC), lower-strength concrete classes maintain acceptable performance. The Life Cycle Assessment (LCA) indicates that fully replacing the natural aggregate with a high-quality recycled aggregate reduces environmental impact by nearly 50%, primarily due to lower resource depletion and transportation emissions. The study demonstrates that RAC can be optimized for structural applications, particularly in foundation structures, without compromising functional integrity. Unlike previous studies, this research provides a systematic evaluation of how a two-stage recycling process enhances aggregate quality, leading to improved RAC performance, and introduces practical strategies for optimizing RAC durability and mix design for real-world foundation applications. Future research should explore alternative mix designs and durability improvements to enhance RAC’s viability for broader construction applications.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20101 - Civil engineering

Project

—

Continuities

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Buildings

ISSN

2075-5309

e-ISSN

2075-5309

Volume of the periodical

15

Issue of the periodical within the volume

8

Country of publishing house

CH - SWITZERLAND

Number of pages

23

Pages from-to

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UT code for WoS article

001477273700001

EID of the result in the Scopus database

2-s2.0-105003633301