Upcycling of construction and demolition waste: Recovery and reuse of binder and fine aggregate in cement applications to achieve circular economy
The effective recycling and utilization of construction and demolition (C&D) waste to its maximum capacity to achieve a circular economy model is challenging in the current scenario. This current research emphasizes upcycling C&D waste using an acid dissolution method to separate the binder...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-02-01
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| Series: | Cleaner Engineering and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666790824001447 |
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| author | Ravi Chandra Malladi Aswathy Ajayan S Gayathri Chandran Thirumalini Selvaraj |
| author_facet | Ravi Chandra Malladi Aswathy Ajayan S Gayathri Chandran Thirumalini Selvaraj |
| author_sort | Ravi Chandra Malladi |
| collection | DOAJ |
| description | The effective recycling and utilization of construction and demolition (C&D) waste to its maximum capacity to achieve a circular economy model is challenging in the current scenario. This current research emphasizes upcycling C&D waste using an acid dissolution method to separate the binder and aggregate fractions, and their performance was evaluated in cement mortar mixtures. The results showed that replacing 20% of cement with the recovered binder improved compressive strength by 8.07%, enhanced hydration product formation, and decreased water absorption and porosity by 11.48% and 5.21%, respectively. Replacing natural sand with recycled aggregates also resulted in comparable strength gains compared to reference mortars. The complete utilization of the secondary products from the upcycled C&D waste in construction activities helps to achieve sustainable development goals by reducing the carbon footprint and contributing to a circular economy model. |
| format | Article |
| id | doaj-art-5b60d0952ec649de9ef8679bd84e8d19 |
| institution | DOAJ |
| issn | 2666-7908 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Cleaner Engineering and Technology |
| spelling | doaj-art-5b60d0952ec649de9ef8679bd84e8d192025-08-20T02:48:57ZengElsevierCleaner Engineering and Technology2666-79082025-02-012410086410.1016/j.clet.2024.100864Upcycling of construction and demolition waste: Recovery and reuse of binder and fine aggregate in cement applications to achieve circular economyRavi Chandra Malladi0Aswathy Ajayan S1Gayathri Chandran2Thirumalini Selvaraj3School of Civil Engineering, Vellore Institute of Technology, Vellore, 632014, IndiaSchool of Civil Engineering, Vellore Institute of Technology, Vellore, 632014, IndiaSchool of Civil Engineering, Vellore Institute of Technology, Vellore, 632014, IndiaCO2 Research and Green Technologies Centre, Vellore Institute of Technology, Vellore, 632014, India; Ulam NAWA, Lublin University of Technology, Lublin, 20-618, Poland; Corresponding author. CO2 Research and Green Technologies Centre, Vellore Institute of Technology, Vellore, 632014, India.The effective recycling and utilization of construction and demolition (C&D) waste to its maximum capacity to achieve a circular economy model is challenging in the current scenario. This current research emphasizes upcycling C&D waste using an acid dissolution method to separate the binder and aggregate fractions, and their performance was evaluated in cement mortar mixtures. The results showed that replacing 20% of cement with the recovered binder improved compressive strength by 8.07%, enhanced hydration product formation, and decreased water absorption and porosity by 11.48% and 5.21%, respectively. Replacing natural sand with recycled aggregates also resulted in comparable strength gains compared to reference mortars. The complete utilization of the secondary products from the upcycled C&D waste in construction activities helps to achieve sustainable development goals by reducing the carbon footprint and contributing to a circular economy model.http://www.sciencedirect.com/science/article/pii/S2666790824001447Construction and demolition wasteDehydroxylationAcid dissolutionCement chemistryCircular economy |
| spellingShingle | Ravi Chandra Malladi Aswathy Ajayan S Gayathri Chandran Thirumalini Selvaraj Upcycling of construction and demolition waste: Recovery and reuse of binder and fine aggregate in cement applications to achieve circular economy Cleaner Engineering and Technology Construction and demolition waste Dehydroxylation Acid dissolution Cement chemistry Circular economy |
| title | Upcycling of construction and demolition waste: Recovery and reuse of binder and fine aggregate in cement applications to achieve circular economy |
| title_full | Upcycling of construction and demolition waste: Recovery and reuse of binder and fine aggregate in cement applications to achieve circular economy |
| title_fullStr | Upcycling of construction and demolition waste: Recovery and reuse of binder and fine aggregate in cement applications to achieve circular economy |
| title_full_unstemmed | Upcycling of construction and demolition waste: Recovery and reuse of binder and fine aggregate in cement applications to achieve circular economy |
| title_short | Upcycling of construction and demolition waste: Recovery and reuse of binder and fine aggregate in cement applications to achieve circular economy |
| title_sort | upcycling of construction and demolition waste recovery and reuse of binder and fine aggregate in cement applications to achieve circular economy |
| topic | Construction and demolition waste Dehydroxylation Acid dissolution Cement chemistry Circular economy |
| url | http://www.sciencedirect.com/science/article/pii/S2666790824001447 |
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