Sound absorption for concrete containing polyethylene terephthalate waste

Kai Loong, Tam and Shahidan, Shahiron and Abdul Manaf, Adib Fikri and Khalid, Faisal Sheikh and Mohd Zuki, Sharifah Salwa and Abd Rahim, Mustaqqim and Wan Ibrahim, Mohd Haziman and Adnan, Suraya Hani and A. Mijarsh, Mustafa Juma and Mohammad Azmi, Mohamad Azim (2020) Sound absorption for concrete containing polyethylene terephthalate waste. Journal of Critical Reviews, 7 (8). pp. 1379-1389. ISSN 2394-5125

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Plastic solid waste generation increases every year with the current consumption habit prevalent in society nowadays. The improper disposal of plastic has been a major concern to the environment as it is not easily degradable. The issue of environmental pollution caused by polyethene terephthalates (PET) has been extensively discussed and the best solution proposed is recycling. Fibre Concrete (FC) was a composite material resulting from the addition of fibres to ordinary concrete. The objective of this research was to determine the acoustic absorption coefficient of concrete containing 0%, 0.5%, 1.0%, 1.5%, 2.0% of PET fibre compared to normal concrete. In this study, straight and irregular recycled PET fibres were used. The fibres were simply cut from PET plastic bottles. The length and width of recycling PET fibre were fixed at 25 mm and 5 mm respectively. The chosen percentages were 0.5%, 1.0%, 1.5% and 2.0% of fiber. A water-cement ratio of 0.45 was acceptable for all ranges. The tests that were conduct include the slump test, compression test, and impedance tube test. The specimens were tested on day 7 and day 28 after the concrete is mixed. The end of this research results for the compressive strength of normal concrete after 28 days of curing was 48.2 MPa while concrete with 0.5% PET, 1.0 % PET, 1.5% PET and 2.0% PET recorded a compressive strength of 50.9 MPa, 49.8 MPa, 47.9 MPa and 46.6 MPa respectively. The result of the impedance test received at age 28 days was 0.13 for normal concrete and 0.16, 0.14, 0.16 MPa, and 0.14 for 0.5% PET, 1.0 % PET, 1.5% PET and 2.0% PET respectively. In conclusion, the aspect ratio of the fibres to the concrete must be correlated to avoid reducing durability. In conclusion, the addition of 0.5% PET recycled fibre into concrete showed the best value in terms of strength and 0.16 for the sound absorption coefficient.

Item Type: Article
Uncontrolled Keywords: PET fibre concrete; sound absorption; impedance tube test
Subjects: T Technology > TH Building construction > TH900-915 Construction equipment in building
Divisions: Faculty of Civil Engineering and Built Environment > Department of Civil Engineering : Structural and Materials Engineering
Depositing User: Mr. Shahrul Ahmad Bakri
Date Deposited: 01 Mar 2022 06:41
Last Modified: 01 Mar 2022 06:41

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