Davies, I.E.E and Olofinnade, O. M. (2021) Suitability of using post-consumer polyethylene terephthalate wastes in cement-based hollow sandcrete blocks. In: 2nd International Conference on Sustainable Infrastructural Development, 2021.
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Abstract
. In recent times, efforts are channeled towards limiting the impact of waste plastic pollution on the environment. This study examines the beneficial utilization of polyethylene terephthalate (PET) wastes, which is a non-biodegradable waste materials as a partial substitute for sand in the production of non-load bearing hollow sandcrete blocks. The physical and mechanical properties such as density and compressive strength of the hollow sandcrete blocks using PET waste as a replacement for fine aggregate at 5%, 10%, 30% and 50% were determined. Tests results show that the density of the produced sandcrete blocks decreases as the waste PET content increases. Results showed that the density varied from 1391.33 kg/m3 for 50%PET content to 1954.54 kg/m3 for 5%PET content, while the density of the reference sandcrete was 2002.15 kg/m3 for 7 days. The values of densities ranged between 1453.88 kg/m3 for PET 50% and 1851.09 kg/m3 for PET 5% and the density of reference sandcrete was 1991.77 kg/m3 at 28 days. The sandcrete blocks also demonstrate a similar reduction trend in compressive strength as the PET content increases. The compressive strength ranged between 1.140 N/mm2 for 50%PET and 2.564 N/mm2 for 5%PET content and 1.510 N/mm2 for 50%PET to 2.991 N/mm2 for 5%PET respectively, as the curing age increases from 7 to 28 days. The hollow sandcrete block containing an optimum 5% replacement percentage of sand with PET waste showed comparable strength to the conventional sandcrete blocks. This will help to mitigate the menace of marine plastic pollution and promote responsible consumption.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Uncontrolled Keywords: | Sandcrete blocks, Natural aggregate, Compressive strength, Density, Coefficient of uniformity, Specific gravity |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TH Building construction |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Civil Engineering and the Environment |
| Depositing User: | Dr Oluwarotimi Michael Olofinnade |
| Date Deposited: | 19 May 2021 09:12 |
| Last Modified: | 19 May 2021 09:12 |
| URI: | http://eprints.covenantuniversity.edu.ng/id/eprint/14095 |
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