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Performance assessment and economic and ecological analysis of carbon-negative recycled crumb rubber-based geopolymers     
Yazarlar
Abdussalam Mh Sarkaz
Aamar Danish
Doç. Dr. Selçuk MEMİŞ
Kastamonu Üniversitesi, Türkiye
Prof. Dr. Hasbi YAPRAK
Kastamonu Üniversitesi, Türkiye
Osman Gençel
Bartın Üniversitesi, Türkiye
Togay Ozbakkaloglu
Özet
Geopolymer technology offers several compelling ecological and economic advantages regarding waste management. This research investigates the effect of size (less than equal to 4 mm) and amount (5–15 vol%) of crumb rubber (CR) as fine aggregate on the physical, mechanical, and durability properties of geopolymers. The economic and ecological analyses were also performed to determine the effect of producing CR-based geopolymers on cost and the environment. The results revealed that the addition of CR negatively influences the physical, mechanical, and durability properties; nonetheless, incorporation of 5–10 vol% CR with a size less than 2 mm exhibited satisfactory performance fit for medium-strength structures such as foundations, partition walls, sidewalks, drainage structures, etc. Additionally, although the incorporation of CR slightly increases the production cost (3.99–11.97%) and embodied energy (0.08–0.24%) of resulting geopolymers, the embodied CO2 emission of 5, 10, and 15 vol% CR-incorporated geopolymer mixes is 90.4, −143.6 and −377.6 kgCO2e/m3, respectively. In contrast, the embodied CO2 emissions of conventional geopolymer mix is 324.4 kgCO2e/m3, which shows the negative carbon emission potential of CR-modified geopolymers, providing a glimmer of hope for sustainable development in the construction industry.
Anahtar Kelimeler
Crumb rubber | Fine aggregate | Geopolymer | Negative carbon emissions | Sustainable development
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı Elsevier BV
Dergi ISSN 0959-6526
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q1
Makale Dili Türkçe
Basım Tarihi 01-2024
Cilt No 434
Doi Numarası 10.1016/j.jclepro.2023.139842
Makale Linki http://dx.doi.org/10.1016/j.jclepro.2023.139842