Sustainable concrete: Investigating the use of brick waste as an aggregate substitute
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Full Text |
Pdf
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Author |
Saloua Filali, Abdelkader Nasser and Abdelhamid Kerkour-El Miad
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e-ISSN |
1819-6608 |
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On Pages
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221-230
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Volume No. |
20
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Issue No. |
5
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Issue Date |
April 30, 2025
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DOI |
https://doi.org/10.59018/032534
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Keywords |
brick waste, density, schmidt hammer, strength, ultrasonic velocity, workability.
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Abstract
The rapid expansion of infrastructure, cities, and industries worldwide has increased the demand for concrete, creating new ecological problems. A potential solution to enhance the sustainability of construction materials is to use brick waste instead of natural aggregates in concrete. This study investigates the substitution of natural coarse aggregates with brick coarse aggregates at substitution rates of 25%, 45%, 65%, and 85%. Additionally, brick powder replaces 10% of the sand. Comparing this substitution to the control mixture in the fresh state, the results indicate a decrease in workability of 34.66%, 41.33%, 45.33%, and 50.66%, as well as a decrease in density of 3.08%, 5%, 6.8%, and 8.62%. After 56 days, the mixture with 10% brick powder instead of sand and 25% brick gravel instead of natural gravel showed a 12.14% increase in compressive strength and an 18.33% increase in tensile strength compared to the reference concrete. The research also highlights a strong relationship between experimental compressive strength and non-destructive techniques like the Schmidt hammer for estimating the same value. Consequently, optimizing alternative materials is crucial for attaining superior performance while guaranteeing environmental advantages. This study introduces a novel methodology for sustainable construction, facilitating a balance between performance and sustainability within the construction sector. This work is significant for its potential to revolutionize waste management practices and advocate for using more sustainable construction materials.
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