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Zenodo
2025
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| Online Access: | https://doi.org/10.5281/zenodo.15545145 |
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| _version_ | 1866902265751666688 |
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| author | Harsh Sharma Sunil Chauhan Baibhav Kr. Bhagat |
| author_facet | Harsh Sharma Sunil Chauhan Baibhav Kr. Bhagat |
| contents | <p>The disposal of waste rubber tyres poses significant environmental challenges, while the demand for sustainable construction materials continues to rise. This study investigates the feasibility of partially replacing coarse aggregates in M20-grade concrete with waste rubber tyres (5–20% by volume) to balance structural performance and ecological benefits. A novel hybrid method was developed by integrating chemical pretreatment of rubber aggregates (NaOH solution), optimized gradation, and supplementary cementitious materials (5% silica fume). Fifteen recent studies (2021–2024) were analyzed to identify gaps in rubber-concrete compatibility, leading to the design of a multi-phase experimental approach. Compressive strength tests at 7, 14, and 28 days revealed that 10% rubber replacement achieved 92% of the control mix’s strength (28.4 MPa vs. 30.9 MPa), while higher replacements (15–20%) showed a 15–25% reduction. Microstructural analysis via SEM confirmed improved rubbercement bonding due to NaOH pretreatment. The hybrid method demonstrates that partial rubber incorporation can meet M20 standards while reducing natural aggregate consumption by 10%. This research provides actionable insights for eco-friendly concrete design, aligning with circular economy principles.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_15545145 |
| institution | Zenodo |
| language | |
| publishDate | 2025 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Experimental Study on Compressive Strength of M20 Grade Concrete with Partial Replacement of Coarse Aggregate by Waste Rubber Tyres Harsh Sharma Sunil Chauhan Baibhav Kr. Bhagat <p>The disposal of waste rubber tyres poses significant environmental challenges, while the demand for sustainable construction materials continues to rise. This study investigates the feasibility of partially replacing coarse aggregates in M20-grade concrete with waste rubber tyres (5–20% by volume) to balance structural performance and ecological benefits. A novel hybrid method was developed by integrating chemical pretreatment of rubber aggregates (NaOH solution), optimized gradation, and supplementary cementitious materials (5% silica fume). Fifteen recent studies (2021–2024) were analyzed to identify gaps in rubber-concrete compatibility, leading to the design of a multi-phase experimental approach. Compressive strength tests at 7, 14, and 28 days revealed that 10% rubber replacement achieved 92% of the control mix’s strength (28.4 MPa vs. 30.9 MPa), while higher replacements (15–20%) showed a 15–25% reduction. Microstructural analysis via SEM confirmed improved rubbercement bonding due to NaOH pretreatment. The hybrid method demonstrates that partial rubber incorporation can meet M20 standards while reducing natural aggregate consumption by 10%. This research provides actionable insights for eco-friendly concrete design, aligning with circular economy principles.</p> |
| title | Experimental Study on Compressive Strength of M20 Grade Concrete with Partial Replacement of Coarse Aggregate by Waste Rubber Tyres |
| url | https://doi.org/10.5281/zenodo.15545145 |