Improving the physical and mechanical properties new concrete containing crushed dune sand and demolition waste as coarse aggregate
Using concrete waste as aggregates in new concrete compositions brings numerous advantages. It helps in reducing the costs associated with managing demolition waste and contributes to the preservation of natural deposits and mountains by minimizing the demand for new quarries. However, when complet...
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| Format: | Article |
| Language: | English |
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Universidade Federal de Viçosa (UFV)
2023-06-01
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| Series: | The Journal of Engineering and Exact Sciences |
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| Online Access: | https://periodicos.ufv.br/jcec/article/view/16002 |
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| author | Noureddine Agha Abdelkadir Makkani Ahmed Tafraoui Said Zaouai |
| author_facet | Noureddine Agha Abdelkadir Makkani Ahmed Tafraoui Said Zaouai |
| author_sort | Noureddine Agha |
| collection | DOAJ |
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Using concrete waste as aggregates in new concrete compositions brings numerous advantages. It helps in reducing the costs associated with managing demolition waste and contributes to the preservation of natural deposits and mountains by minimizing the demand for new quarries. However, when completely substituting natural aggregates (NA) with recycled concrete aggregates (RCA) in concrete, it directly affects the fundamental properties of the material, particularly its physical and mechanical characteristics. This is primarily due to the inferior qualities exhibited by RCAs in comparison to natural coarse aggregates, primarily stemming from their increased porosity and water absorption. In the experimental study conducted, the focus was on investigating the influence of substituting cement with crushed dune sand (CDS) at different replacement levels (5%, 10%, and 15%) on the mechanical and physical properties of self-compacting concrete (SCC) incorporating 100% RCA. The findings from this study indicated that the substitution of cement with CS resulted in improved mechanical and physical behavior of the self-compacting concrete containing 100% RCA, particularly when CS was present at 5% and 10% levels. Overall, the study suggests that incorporating CS as a partial substitute for cement in SCC containing 100% RCA can positively affect the properties of the concrete mixture, enhancing its mechanical and physical performance.
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| format | Article |
| id | doaj-art-95735ad55d2b4e168187cce179f10853 |
| institution | Kabale University |
| issn | 2527-1075 |
| language | English |
| publishDate | 2023-06-01 |
| publisher | Universidade Federal de Viçosa (UFV) |
| record_format | Article |
| series | The Journal of Engineering and Exact Sciences |
| spelling | doaj-art-95735ad55d2b4e168187cce179f108532025-02-02T19:55:02ZengUniversidade Federal de Viçosa (UFV)The Journal of Engineering and Exact Sciences2527-10752023-06-019510.18540/jcecvl9iss5pp16002-01eImproving the physical and mechanical properties new concrete containing crushed dune sand and demolition waste as coarse aggregateNoureddine Agha 0Abdelkadir Makkani1Ahmed Tafraoui2Said Zaouai3Laboratory of Eco-materials: Innovations & Applications (EMIA), Civil Engineering Department, TAHRI Mohamed University, Bechar, ALGERIALaboratory of Eco-materials: Innovations & Applications (EMIA), Civil Engineering Department, TAHRI Mohamed University, Bechar, ALGERIALaboratory of Eco-materials: Innovations & Applications (EMIA), Civil Engineering Department, TAHRI Mohamed University, Bechar, ALGERIALaboratory of Eco-materials: Innovations & Applications (EMIA), Civil Engineering Department, University of Djelfa, 17000 Djelfa, Algeria Using concrete waste as aggregates in new concrete compositions brings numerous advantages. It helps in reducing the costs associated with managing demolition waste and contributes to the preservation of natural deposits and mountains by minimizing the demand for new quarries. However, when completely substituting natural aggregates (NA) with recycled concrete aggregates (RCA) in concrete, it directly affects the fundamental properties of the material, particularly its physical and mechanical characteristics. This is primarily due to the inferior qualities exhibited by RCAs in comparison to natural coarse aggregates, primarily stemming from their increased porosity and water absorption. In the experimental study conducted, the focus was on investigating the influence of substituting cement with crushed dune sand (CDS) at different replacement levels (5%, 10%, and 15%) on the mechanical and physical properties of self-compacting concrete (SCC) incorporating 100% RCA. The findings from this study indicated that the substitution of cement with CS resulted in improved mechanical and physical behavior of the self-compacting concrete containing 100% RCA, particularly when CS was present at 5% and 10% levels. Overall, the study suggests that incorporating CS as a partial substitute for cement in SCC containing 100% RCA can positively affect the properties of the concrete mixture, enhancing its mechanical and physical performance. https://periodicos.ufv.br/jcec/article/view/16002Self-compacting concrete. Recycled concrete aggregates. Crushed dune sand. Mechanical and physical properties. |
| spellingShingle | Noureddine Agha Abdelkadir Makkani Ahmed Tafraoui Said Zaouai Improving the physical and mechanical properties new concrete containing crushed dune sand and demolition waste as coarse aggregate The Journal of Engineering and Exact Sciences Self-compacting concrete. Recycled concrete aggregates. Crushed dune sand. Mechanical and physical properties. |
| title | Improving the physical and mechanical properties new concrete containing crushed dune sand and demolition waste as coarse aggregate |
| title_full | Improving the physical and mechanical properties new concrete containing crushed dune sand and demolition waste as coarse aggregate |
| title_fullStr | Improving the physical and mechanical properties new concrete containing crushed dune sand and demolition waste as coarse aggregate |
| title_full_unstemmed | Improving the physical and mechanical properties new concrete containing crushed dune sand and demolition waste as coarse aggregate |
| title_short | Improving the physical and mechanical properties new concrete containing crushed dune sand and demolition waste as coarse aggregate |
| title_sort | improving the physical and mechanical properties new concrete containing crushed dune sand and demolition waste as coarse aggregate |
| topic | Self-compacting concrete. Recycled concrete aggregates. Crushed dune sand. Mechanical and physical properties. |
| url | https://periodicos.ufv.br/jcec/article/view/16002 |
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