This study examined HDPE (high-density polyethylene) plastic waste as an added material for concrete mixtures. The selection of HDPE was based on its increased strength, hardness, and resistance to high temperatures compared with other plastics. It focused on how HDPE plastic can be used as an additive in concrete to increase its tensile strength and compressive strength. 156 specimens were used to identify the effect of adding different percentages and sizes of HDPE lamellar particles to lower, medium, and higher strength concrete for non-structural applications. HDPE 0.5 mm thick lamellar particles with sizes of 10 × 10 mm, 5 × 20 mm, and 2.5 × 40 mm were added at 2.5%, 5%, 10%, and 20% by weight of cement. The results showed that the medium concrete class (with compressive strength equal to 10 MPa) had the best response to the addition of HDPE. The 5% HDPE addition represented the optimal mix for all concrete types, while the 5 × 20 mm size was best.

HDPE (high-density polyethene) plastic waste is stronger, harder, and more resistant to high temperatures than other plastics. Using it as an additive in a concrete mixture is one solution to reduce this type of waste. We examined how HDPE-type plastics can be used as an additive material in the manufacture of concrete to improve its hardness, tensile strength and compressive strength. Using 156 samples, we aimed to identify the effect of HDPE plastic fibres on concrete of three qualities; B0, f'c10 MPa (low quality), and f'c25 MPa (medium and high quality). We added four compositions (2.5%, 5%, 10% and 20% by weight of cement) of HDPE plastic fibre to each quality of cement, with HDPE plastic fibre sizes of 1 x 1 cm, 0.5 x 2 cm or 0.25 x 4 cm. We found that the addition of 5% HDPE plastic fibre with a 0.5 x 2 cm cross-sectional shape to the f'c10 MPa concrete gives the best result, with increased tensile and compressive strength of the concrete.

HDPE plastic waste has stronger, harder, and more high-temperature properties compared with other plastics. To use it as an additive ingredient in a concrete mixture is one solution to reduce this type of waste. This research examines how HDPE-type plastics can be used as an additive material in the manufacture of concrete to improve the hardness as to how it increases the tensile strength and the compressive strength of the concrete. This study involved 156 samples and aimed to identify the effect of HDPE plastic fibres in various concrete quality by examining the effect of adding HDPE plastic on three concrete qualities; B0, f'c10 MPa (low quality), f'c25 MPa (medium and high quality). To each quality were added four compositions of HDPE plastic fibre: namely, additions of 2.5%, 5%, 10% and 20% by weight of cement, respectively, with HDPE plastic fibre sizes varying from 1 cm x 1cm, 0.5cm x 2cm and 0.25 x 4cm. The results found that for the f'c10 MPa concrete and 0.5 cm x 2cm cross-section shape, the addition of 5% HDPE plastic fibre gives the best result, increased tensile strength, and compressive strength of concrete.