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Flexural behaviour of fibre reinforced concrete beams containing polyethylene terephthalate (PET) wastes

Roslan, Muhammad Asyraf (2014) Flexural behaviour of fibre reinforced concrete beams containing polyethylene terephthalate (PET) wastes. Masters thesis, Universiti Tun Hussein Onn Malaysia.

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Abstract

Concrete is a brittle material that can be improved by introducing an additive such as fiber. Studies have proven that the flexural behavior of concrete, such as deflection and cracking, improved when incorporated with fiber. Recently, fibres, such as steel, glass, synthetic, or natural fibres, have been used concrete in concrete to improve the weakness. Recycled polyethylene terephthalate (PET) from bottle wastes, which belongs to the synthetic fiber group, has been used for such purpose. The use of recycled PET bottle wastes can be an alternative solution to PET disposal treatment, which is beneficial to the environment. Therefore, this study collected irregular PET bottle wastes from the Universiti Tun Hussein Onn Malaysia (UTHM) and a recycling collector in Muar for use as fiber in concrete. The bottle wastes were ground to produce PET fibres with an irregular size that ranges from 5 mm to 10 mm. Based on previous studies, three volume fractions of PET fiber (0.5%, I%, and 1.5%) were incorporated in concrete. This study investigated the material properties and flexural behavior of irregular PET FRC. Density, moisture content, and workability tests were performed for physical properties, whereas compressive strength, tensile strength, and modulus eIasticity were tested for mechanical properties. In flexural behavior properties, RC was tested under four-point loading to investigate its beam, deflection, and cracking behavior. The results for material and flexural behavior properties were compared with the control. Both results presented irregular PET FRC in line with the control. At the end of this study, a modified maximum crack spacing (SrnUx,pEmTo)d el was proposed based on the Gilbert model. Regression analysis and validation work showed that the modified model can be used to predict the maximum crack spacing for irregular PET fiber RC beam.

Item Type: Thesis (Masters)
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
Depositing User: Normajihan Abd. Rahman
Date Deposited: 28 Apr 2016 04:43
Last Modified: 29 Jul 2020 06:54
URI: http://eprints.uthm.edu.my/id/eprint/7982
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