Investigation on the properties of concrete with recycled polyethylene terephthalate (PET) granules as fine aggregate replacement

Eyni Kangavar, Mohammad and Lokuge, Weena ORCID: and Manalo, Allan ORCID: and Karunasena, Warna ORCID: and Frigione, Mariaenrica (2022) Investigation on the properties of concrete with recycled polyethylene terephthalate (PET) granules as fine aggregate replacement. Case Studies in Construction Materials, 16:e00934. pp. 1-14.

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Waste management is an area of significant global concern. The reuse of waste materials (such as: plastics, glass, wood, etc.) in concrete manufacturing has been studied for potential cost savings, improvements in quality, and reduction of environmental impact leading to sustainability. This study examines the performance of concrete containing recycled polyethylene terephthalate (PET) waste in granular form to replace the fine aggregate. A series of concrete specimens for Grade 32 concrete mix were cast using PET granules as partial replacement to fine aggregates in the mixture (0%, 10%, 30%, and 50% replacement by volume of fine aggregate). Important properties such as workability (slump), density, compressive strength, elastic modulus, tensile strength, flexural strength, and crack mouth opening displacement (CMOD) were evaluated together with the microstructural observations. The experimental results indicated that volumetric replacement of fine aggregates with 10% recycled PET granules positively impacted the characteristics of the concrete. The findings further revealed an improvement in the ductility of concrete with recycled PET granules content, albeit the effect was more pronounced with the concrete containing 10% PET granules. The experimental results for the mechanical properties were compared against available Australian and American design guidelines and a strong linear relationship is observed. Lastly, the findings of this study on mechanical properties revealed an optimum performance relative to those reported in the available literature, particularly for the concrete with 10% of fine aggregate replaced by PET granules.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Current – Faculty of Health, Engineering and Sciences - School of Engineering (1 Jan 2022 -)
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Date Deposited: 21 Mar 2022 01:38
Last Modified: 21 Mar 2022 01:38
Uncontrolled Keywords: Crack mouth opening displacement (CMOD); Mechanical properties; Recycled PET granules; Sustainability; Waste management
Fields of Research (2020): 40 ENGINEERING > 4016 Materials engineering > 401609 Polymers and plastics
40 ENGINEERING > 4016 Materials engineering > 401602 Composite and hybrid materials
40 ENGINEERING > 4005 Civil engineering > 400505 Construction materials
Socio-Economic Objectives (2020): 28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280110 Expanding knowledge in engineering
12 CONSTRUCTION > 1203 Construction materials performance and processes > 120301 Cement and concrete materials
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