Upcycling of waste rubber using pelletized artificial geopolymer aggregate technology
The utilization of waste rubber as aggregates shows both environmentally friendly features and high cost-efficiency in construction, but may cause poor workability such as rubber flotation and agglomeration. To address the above issues, the pelletization method was adopted to produce rubberized arti...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-12-01
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| Series: | Developments in the Built Environment |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666165924002357 |
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| author | Hui Wang Lan-Ping Qian Ling-Yu Xu Yi Li Hong Guan |
| author_facet | Hui Wang Lan-Ping Qian Ling-Yu Xu Yi Li Hong Guan |
| author_sort | Hui Wang |
| collection | DOAJ |
| description | The utilization of waste rubber as aggregates shows both environmentally friendly features and high cost-efficiency in construction, but may cause poor workability such as rubber flotation and agglomeration. To address the above issues, the pelletization method was adopted to produce rubberized artificial geopolymer aggregates (R-GPA), and the effects of different rubber modification methods and rubber contents were investigated through pelletization technologies, mechanical tests, X-ray computed tomography (XCT) and backscattered electron with energy-dispersive spectroscopy (BSE-EDS). Results showed that the combined modification with NaOH solution and silane coupling agent presented the most effective surface modification efficiency. According to microscopic analysis, rubber modification could effectively enhance the rubber-matrix interface. The produced R-GPA could thus possess an oven-dried particle density within 1500–1800 kg/m³, a water absorption of 7%–10.5%, and a pelletization efficiency over 98%, which provided a new insight into the value-added utilization of waste rubber and the promotion of artificial aggregate technologies. |
| format | Article |
| id | doaj-art-8b2d13223d80477d96e28d483190e264 |
| institution | OA Journals |
| issn | 2666-1659 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Developments in the Built Environment |
| spelling | doaj-art-8b2d13223d80477d96e28d483190e2642025-08-20T01:58:22ZengElsevierDevelopments in the Built Environment2666-16592024-12-012010055410.1016/j.dibe.2024.100554Upcycling of waste rubber using pelletized artificial geopolymer aggregate technologyHui Wang0Lan-Ping Qian1Ling-Yu Xu2Yi Li3Hong Guan4Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing Key Laboratory of Earthquake Engineering and Structural Retrofit, Beijing University of Technology, Beijing, ChinaKey Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing Key Laboratory of Earthquake Engineering and Structural Retrofit, Beijing University of Technology, Beijing, China; Corresponding author.Institute of Advanced Engineering Structures, Zhejiang University, Hangzhou, China; Corresponding author.Beijing Key Laboratory of Earthquake Engineering and Structural Retrofit, Beijing University of Technology, Beijing, ChinaSchool of Engineering and Built Environment, Griffith University, Gold Coast Campus, Queensland, 4222, AustraliaThe utilization of waste rubber as aggregates shows both environmentally friendly features and high cost-efficiency in construction, but may cause poor workability such as rubber flotation and agglomeration. To address the above issues, the pelletization method was adopted to produce rubberized artificial geopolymer aggregates (R-GPA), and the effects of different rubber modification methods and rubber contents were investigated through pelletization technologies, mechanical tests, X-ray computed tomography (XCT) and backscattered electron with energy-dispersive spectroscopy (BSE-EDS). Results showed that the combined modification with NaOH solution and silane coupling agent presented the most effective surface modification efficiency. According to microscopic analysis, rubber modification could effectively enhance the rubber-matrix interface. The produced R-GPA could thus possess an oven-dried particle density within 1500–1800 kg/m³, a water absorption of 7%–10.5%, and a pelletization efficiency over 98%, which provided a new insight into the value-added utilization of waste rubber and the promotion of artificial aggregate technologies.http://www.sciencedirect.com/science/article/pii/S2666165924002357RubberGeopolymer aggregates (GPA)Alkali-activated materialsPelletizationSurface modificationInterface |
| spellingShingle | Hui Wang Lan-Ping Qian Ling-Yu Xu Yi Li Hong Guan Upcycling of waste rubber using pelletized artificial geopolymer aggregate technology Developments in the Built Environment Rubber Geopolymer aggregates (GPA) Alkali-activated materials Pelletization Surface modification Interface |
| title | Upcycling of waste rubber using pelletized artificial geopolymer aggregate technology |
| title_full | Upcycling of waste rubber using pelletized artificial geopolymer aggregate technology |
| title_fullStr | Upcycling of waste rubber using pelletized artificial geopolymer aggregate technology |
| title_full_unstemmed | Upcycling of waste rubber using pelletized artificial geopolymer aggregate technology |
| title_short | Upcycling of waste rubber using pelletized artificial geopolymer aggregate technology |
| title_sort | upcycling of waste rubber using pelletized artificial geopolymer aggregate technology |
| topic | Rubber Geopolymer aggregates (GPA) Alkali-activated materials Pelletization Surface modification Interface |
| url | http://www.sciencedirect.com/science/article/pii/S2666165924002357 |
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