Solid waste is one of the many factors that negatively affect the environment. Problems stem from factors such as difficulty of waste recycling and limited reuse. Plastic is an important type of solid waste with a strong environmental impact. This study aims to investigate the effects of utilising poly-ethylene terephthalate (PET) as a partial substitute for sand in concrete. The effects of this material on the physical and mechanical properties of concrete were examined. A group of six concrete mixtures containing PET was prepared as a partial substitute for sand with substitution levels 0%, 10%, 20%, 30%, 40% and 50%. Concrete was cast to determine the behaviour of fresh and hardened concrete in terms of workability, unit weight, compressive strength, flexural strength, tensile strength, pulse velocity and fire-resistant behaviour. The experimental results showed a reduction in unit weight, the sand replacement harmed the concrete mechanical properties at varying rates and proved that plastic waste can be disposed of by specific ratios and therefore, can be effectively applied in industrial usage.

固体废物是对环境产生负面影响的众多因素之一。问题源于诸如废物回收的难度和有限的再利用之类的因素。塑料是一种重要的固体废物，对环境影响很大。这项研究旨在研究利用聚对苯二甲酸乙二醇酯（PET）作为混凝土中沙子的部分替代品的效果。检查了这种材料对混凝土物理和机械性能的影响。制备了一组包含PET的六种混凝土混合物作为砂的部分替代品，其替代水平为0％，10％，20％，30％，40％和50％。根据可加工性，单位重量，抗压强度，抗弯强度，抗张强度，脉冲速度和耐火性能，浇筑混凝土以确定新鲜和硬化混凝土的性能。