Mechanical and physical properties of plastic waste mixture in concrete

Kamarulzaman, Cik Marlissa Maisarah (2022) Mechanical and physical properties of plastic waste mixture in concrete. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

This thesis explains about mechanical and physical properties of plastic waste mixture in concrete. Dumping of plastic waste has become a serious issues as it is not properly handled. Reusing plastic waste, namely Polyethylene Terephthalate (PET), which is used as an aggregate in concrete component can reduce environmental pollution. Throughout this thesis, mixing method will be implemented where all the materials will be mixed together with various plastic waste mixture (PET) compositions in the concrete production. Besides, the effect of the influence of waste mixture (PET) in lightweight concrete based on the composition of waste mixture (PET) can be analysed after completed all the sample testing. In this research, preparation method played an important role for analysing physical and mechanical properties in terms of compressive strength, water absorption, density profile and moisture content. Different percentage of aggregate are selected in concrete mix design which are 1%, 3%, 5%, 6%, 8% and 10% composition of plastic waste mixture (PET). The process was started with raw material preparation and continue with preparation of PET aggregate into two sizes which are coarse and fine. The range size of coarse aggregate is 5 mm 7 mm while for fine aggregate is 1 mm 3 mm. In addition, there are five ratios of cement:sand being tested which are 1:1, 1:2, 1:3, 1:4 and 1:5 with total of 15 samples. Different ratios of samples are tested for compression test using Shimadzu Precision Universal Tester (Autograph AG-Xplus) to obtained the best ratio to be used as the benchmark sample of zero percentage of aggregate and to be proceed for sample fabrication. Concrete mix design is implemented with the ratio of 1:2 (cement:sand). During sample fabrication, all the prepared material are weighted according to the mix proportion and proceed with mixing process. The dry samples are then demoulded and ready to be tested for mechanical and physical properties such as compressive strength as well as water absorption, density profile and moisture content.

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