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Impact resistance, water transport properties and sodium sulphate attack are important criteria to determine the performance of concrete incorporating mixed types of recycled plastic waste. Nine mixes were designed with different combinations of the three plastic types; Polyethylene terephthalate (PET), High density polyethylene (HDPE) and Polypropylene (PP). The plastic partially substituted the coarse aggregate (by volume) at various replacement ratios; 10%, 15%, 20% and 30%. The impact resistance and water transport properties were evaluated for nine mixes while sodium sulphate attack test was performed for three mixes. The results showed that the addition of mixed recycled plastic in concrete improved the impact resistance. The highest impact resistance improvement was achieved by R8 (PET + HDPE + PP) at 30% replacement which was 4.5 times better than the control mix. Water absorption results indicated a slight increase in all plastic mixes while contradictory results were observed for sorptivity test. Analysis of sodium sulphate attack results showed that incorporating 30% mixed plastic reduced the sodium sulphate resistance slightly due to the collective effect of plastic entrapping of sulphate ions after 80 cycles. This study has shown some positive results relating to the impact performance of Mixed Recycled Plastic Concrete (MRPC) which enhances its use in a sustainable way.
Mahmoud Abu-Saleem; Yan Zhuge; Reza Hassanli; Mark Ellis; Mizanur Rahman; Peter Levett. Impact Resistance and Sodium Sulphate Attack Testing of Concrete Incorporating Mixed Types of Recycled Plastic Waste. Sustainability 2021, 13, 9521 .
AMA StyleMahmoud Abu-Saleem, Yan Zhuge, Reza Hassanli, Mark Ellis, Mizanur Rahman, Peter Levett. Impact Resistance and Sodium Sulphate Attack Testing of Concrete Incorporating Mixed Types of Recycled Plastic Waste. Sustainability. 2021; 13 (17):9521.
Chicago/Turabian StyleMahmoud Abu-Saleem; Yan Zhuge; Reza Hassanli; Mark Ellis; Mizanur Rahman; Peter Levett. 2021. "Impact Resistance and Sodium Sulphate Attack Testing of Concrete Incorporating Mixed Types of Recycled Plastic Waste." Sustainability 13, no. 17: 9521.
Different types of recycled plastic have been used in concrete and most studies have focused on the behaviour of a single type of plastic. However, separating plastic wastes increases the cost and time of processing. To tackle this problem, this research presents an experimental investigation to determine the effect of incorporating different combinations of three types of recycled plastic waste aggregates—Polyethylene terephthalate (PET), High Density Polyethylene (HDPE) and Polypropylene (PP)—at different replacement ratios of coarse aggregate on physical and mechanical properties of concrete. The combinations include two plastic types at 10% and 20% replacement ratios and three plastic types at 15% and 30% replacement ratios. The performance of the plastic concrete was assessed based on various physical and mechanical properties including workability, fresh and dry densities, air content, compressive, indirect tensile and flexural strengths, modulus of elasticity, stress-strain behaviour and ultrasonic pulse velocity. It is found that the workability of Mixed Recycled Plastic Concrete (MRPC) at a low replacement rate is independent of the type of plastic. The minimum reduction in the compressive strength, indirect tensile and modulus of elasticity were achieved by R3 (PET + PP) at 10% replacement, while R5 (HDPE + PP) at 10% replacement achieved the highest flexural strength and ultrasonic pulse velocity values. The findings suggest that the mixed recycled plastics have a good possibility to partially replace coarse aggregates in concrete which will benefit the plastics recycling community and environment. Furthermore, the study will provide guidance to the concrete industry concerning the effect of the implementation of unsorted mixed types of plastic as coarse aggregates in the production of concrete.
Mahmoud Abu-Saleem; Yan Zhuge; Reza Hassanli; Mark Ellis; Mizanur Rahman; Peter Levett. Stress-Strain Behaviour and Mechanical Strengths of Concrete Incorporating Mixed Recycled Plastics. Journal of Composites Science 2021, 5, 146 .
AMA StyleMahmoud Abu-Saleem, Yan Zhuge, Reza Hassanli, Mark Ellis, Mizanur Rahman, Peter Levett. Stress-Strain Behaviour and Mechanical Strengths of Concrete Incorporating Mixed Recycled Plastics. Journal of Composites Science. 2021; 5 (6):146.
Chicago/Turabian StyleMahmoud Abu-Saleem; Yan Zhuge; Reza Hassanli; Mark Ellis; Mizanur Rahman; Peter Levett. 2021. "Stress-Strain Behaviour and Mechanical Strengths of Concrete Incorporating Mixed Recycled Plastics." Journal of Composites Science 5, no. 6: 146.
This paper investigates the feasibility of using three types of recycled plastic waste to partially replace the coarse aggregate for kerbing application. The recycled plastic wastes adopted in the research include Polyethylene Terephthalate (PET), High Density Polyethylene (HDPE) and Polypropylene (PP). Various properties of the mixes were assessed including fresh concrete properties (workability, fresh density, and air content), mechanical properties (compressive strength, indirect tensile strength, flexural strength and static chord modulus of elasticity) and durability properties (water absorption, water sorptivity, abrasion resistance and drying shrinkage). Scanning electron microscope (SEM) analysis was used to investigate the microstructures of the specimens. Results showed that utilization of plastic aggregate in concrete reduced overall workability and fresh density of concrete; using plastic waste as partial replacement for natural coarse aggregate up to 20% satisfies the kerb design requirement and the strength loss is not detrimental. Up to 20% replacement of PET and PP showed an improved abrasion resistance compared to the control mix. PET exhibited an acceptable drying shrinkage compared to the control mix. The analysis of microstructural observations showed that mixes containing PET exhibited better bond strength compared to HDPE and PP.
Mahmoud Abu-Saleem; Yan Zhuge; Reza Hassanli; Mark Ellis; Mizanur Rahman; Peter Levett. Evaluation of concrete performance with different types of recycled plastic waste for kerb application. Construction and Building Materials 2021, 293, 123477 .
AMA StyleMahmoud Abu-Saleem, Yan Zhuge, Reza Hassanli, Mark Ellis, Mizanur Rahman, Peter Levett. Evaluation of concrete performance with different types of recycled plastic waste for kerb application. Construction and Building Materials. 2021; 293 ():123477.
Chicago/Turabian StyleMahmoud Abu-Saleem; Yan Zhuge; Reza Hassanli; Mark Ellis; Mizanur Rahman; Peter Levett. 2021. "Evaluation of concrete performance with different types of recycled plastic waste for kerb application." Construction and Building Materials 293, no. : 123477.