Effects of waste plastics as partial fine-aggregate replacement for reinforced low-carbon concrete pavements
Using waste plastics as a partial natural aggregate replacement and monitoring strength and workability reduction in pavement structures is vital to net-carbon zero. This study explores the utilisation of waste plastic as a fine aggregate replacement in medium-strength reinforced concrete pavements,...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2022-12-01
|
| Series: | International Journal of Sustainable Engineering |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/19397038.2022.2108156 |
| _version_ | 1797678281016737792 |
|---|---|
| author | Kiran Tota-Maharaj Blessing Oluwaseun Adeleke Ghassan Nounu |
| author_facet | Kiran Tota-Maharaj Blessing Oluwaseun Adeleke Ghassan Nounu |
| author_sort | Kiran Tota-Maharaj |
| collection | DOAJ |
| description | Using waste plastics as a partial natural aggregate replacement and monitoring strength and workability reduction in pavement structures is vital to net-carbon zero. This study explores the utilisation of waste plastic as a fine aggregate replacement in medium-strength reinforced concrete pavements, for improving plastic aggregate performance and the intrinsic reasoning for observed strength performance. Various weight fractions of fines were substituted by the same weight of plastic aggregates ranging from 5–15% according to the appropriate standards (Eurocodes and British Standards). The physical and mechanical properties of the composites were analysed. The results indicated that the use of polymeric materials as a partial replacement for fines contributed to a decrease in workability, compressive strength and push-out bond between steel reinforcement and concrete. Despite these trends, 5% replacement of fine aggregates with plastic waste surpassed all the feasibility criteria. Furthermore, using 10% of plastic replacement by weight was deemed feasible in non-structural applications such as roads, pavements, and facades. The outputs have demonstrated environmental engineering concepts in tackling plastic waste, providing an alternative to conventional aggregate. Environmental benefits can arise due to the removal of potentially hazardous plastics from entering ecosystems as well as minimising dredging of global sand reserves. |
| first_indexed | 2024-03-11T22:57:25Z |
| format | Article |
| id | doaj.art-4668613d3df048059754feb4a5566343 |
| institution | Directory Open Access Journal |
| issn | 1939-7038 1939-7046 |
| language | English |
| last_indexed | 2024-03-11T22:57:25Z |
| publishDate | 2022-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | International Journal of Sustainable Engineering |
| spelling | doaj.art-4668613d3df048059754feb4a55663432023-09-21T15:17:05ZengTaylor & Francis GroupInternational Journal of Sustainable Engineering1939-70381939-70462022-12-0115119220710.1080/19397038.2022.21081562108156Effects of waste plastics as partial fine-aggregate replacement for reinforced low-carbon concrete pavementsKiran Tota-Maharaj0Blessing Oluwaseun Adeleke1Ghassan Nounu2Aston University BirminghamUniversity of South WalesUniversity of the West of England Bristol (UWE Bristol) Frenchay CampusUsing waste plastics as a partial natural aggregate replacement and monitoring strength and workability reduction in pavement structures is vital to net-carbon zero. This study explores the utilisation of waste plastic as a fine aggregate replacement in medium-strength reinforced concrete pavements, for improving plastic aggregate performance and the intrinsic reasoning for observed strength performance. Various weight fractions of fines were substituted by the same weight of plastic aggregates ranging from 5–15% according to the appropriate standards (Eurocodes and British Standards). The physical and mechanical properties of the composites were analysed. The results indicated that the use of polymeric materials as a partial replacement for fines contributed to a decrease in workability, compressive strength and push-out bond between steel reinforcement and concrete. Despite these trends, 5% replacement of fine aggregates with plastic waste surpassed all the feasibility criteria. Furthermore, using 10% of plastic replacement by weight was deemed feasible in non-structural applications such as roads, pavements, and facades. The outputs have demonstrated environmental engineering concepts in tackling plastic waste, providing an alternative to conventional aggregate. Environmental benefits can arise due to the removal of potentially hazardous plastics from entering ecosystems as well as minimising dredging of global sand reserves.http://dx.doi.org/10.1080/19397038.2022.2108156polymeric materialswaste plasticsfine aggregatereinforced concrete pavements (rcp)sustainable infrastructurelow carbon cementitious materials |
| spellingShingle | Kiran Tota-Maharaj Blessing Oluwaseun Adeleke Ghassan Nounu Effects of waste plastics as partial fine-aggregate replacement for reinforced low-carbon concrete pavements International Journal of Sustainable Engineering polymeric materials waste plastics fine aggregate reinforced concrete pavements (rcp) sustainable infrastructure low carbon cementitious materials |
| title | Effects of waste plastics as partial fine-aggregate replacement for reinforced low-carbon concrete pavements |
| title_full | Effects of waste plastics as partial fine-aggregate replacement for reinforced low-carbon concrete pavements |
| title_fullStr | Effects of waste plastics as partial fine-aggregate replacement for reinforced low-carbon concrete pavements |
| title_full_unstemmed | Effects of waste plastics as partial fine-aggregate replacement for reinforced low-carbon concrete pavements |
| title_short | Effects of waste plastics as partial fine-aggregate replacement for reinforced low-carbon concrete pavements |
| title_sort | effects of waste plastics as partial fine aggregate replacement for reinforced low carbon concrete pavements |
| topic | polymeric materials waste plastics fine aggregate reinforced concrete pavements (rcp) sustainable infrastructure low carbon cementitious materials |
| url | http://dx.doi.org/10.1080/19397038.2022.2108156 |
| work_keys_str_mv | AT kirantotamaharaj effectsofwasteplasticsaspartialfineaggregatereplacementforreinforcedlowcarbonconcretepavements AT blessingoluwaseunadeleke effectsofwasteplasticsaspartialfineaggregatereplacementforreinforcedlowcarbonconcretepavements AT ghassannounu effectsofwasteplasticsaspartialfineaggregatereplacementforreinforcedlowcarbonconcretepavements |