Utilizing recycled marble powder dust to part of the cement in concrete
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Full Text |
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Author |
Abdellah Azougay, Saloua Filali, Zineb Miraoui and Abdelkader Nasser
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e-ISSN |
1819-6608 |
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On Pages
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398-413
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Volume No. |
19
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Issue No. |
7
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Issue Date |
May 30, 2024
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DOI |
https://doi.org/10.59018/042457
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Keywords |
marble powder, cement replacement, workability, strength, Schmidt hammer, ultrasonic velocity.
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Abstract
This research investigates the mechanical properties of environmentally friendly concrete utilizing waste marble powder (WMP) as a partial substitute for cement. Both non-destructive and destructive testing methods were employed to assess the concrete's qualities. The aim is to reduce the negative effects of marble powder waste on the environment and reduce the excessive extraction of natural resources. Concrete mixtures with varying levels of WMP substitution (ranging from 0% to 20%) were developed and evaluated for splitting tensile strength, compressive strength, and flexural strength. Durability properties were assessed using the Schmidt Hammer, and ultrasonic pulse velocity tests. Findings showed that concrete containing 10% WMP could be safely used in cement production. However, adding WMP reduced workability by up to 32.07% compared to the control mixture due to its high-water absorption. Significant improvements in compressive strength were observed, particularly on day 7, with increases of up to 25.34% for 10% WMP substitution. Nonetheless, after reaching a 10% replacement level, compressive strength gradually decreased over time. This decline suggests an optimal substitution level of 10% WMP for practical and efficient use. Furthermore, correlation analysis between compressive strength measurements obtained by different methods confirmed the reliability of the results obtained by the Universal Testing Machine (UTM).
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