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- Title
OPTIMISING THE PERFORMANCE OF CRUMB RUBBER MODIFIED CONCRETE.
- Authors
Purcell, Aaron; Forde, Michael M.; Maharaj, Rean; Maharaj, Chris
- Abstract
The issue of management of end of life tyre (EOLT) rubber or crumb rubber presents major social, environmental and economic challenges especially for Small Island Developing States (SIDS) such as Trinidad and Tobago. A successful measure in foreign jurisdictions is to utilize this waste material for civil construction as a substitute for natural aggregate however this strategy has not yet been applied in Trinidad and Tobago. Since the properties of concrete and the influence of additives are dependent on the source and chemical composition of the parent cement, research and scientific studies utilizing Trinidad Portland cement are necessary but lacking. This paper filled this information gap necessary to develop a rubberized Trinidad Portland Type IP concrete. Crumb rubber (0-10%) rubber was added to concrete as a replacement for fine aggregate using a water to cement ratio of 0.5 and cured over 3-28 days. Standard compressive strength, splitting tensile strength and slump tests were performed and the results statistically analysed. Microscopic features of adhesion and disruption characteristics were observed using Scanning Electron Micrography (SEM -EDS). Concrete mixtures using Trinidad Portland cement and crumb rubber at dosages 2 - 4 wt% resulted in a material with properties similar to the unmodified material with compressive strengths achieving the required specification of 20 MPa after 28 days. This study suggests that there is significant potential in valorising the concept of recycling tyre waste into modified crumb rubber concrete as a sustainable waste management option.
- Subjects
TRINIDAD &; Tobago; CRUMB rubber; TIRE recycling; RUBBER; CONCRETE additives; CONCRETE waste; TENSILE tests; WASTE products; CONCRETE
- Publication
Journal of Solid Waste Technology & Management, 2021, Vol 47, Issue 1, p137
- ISSN
1088-1697
- Publication type
Article
- DOI
10.5276/jswtm/2021.137