Abstract— Today, in the construction industry, the sustainability has got the top priority. Around the world, in current construction activities, concrete is classified as one of the most important materials; therefore, many issues pertaining to concrete long term sustainability arise. Pollution, consumption of natural sources with high quantities and large amounts of industrials wastes requires finding new sustainable solutions. Moreover, the growth of the world plastic industry has been tremendous. Among plastic, the most familiar user plastics used is Polyethylene Terephthalate (PET). From drinking water bottles and beverages bottles, this type of plastic is obtained in massive quantity. The aims of this work is to study the possibility of using waste plastic got by shredded PET bottles as fine aggregate, which substituted part of natural sand in the manufacturing of the High Performance Concrete (HPC). For this purpose, this experimental study was carried out to evaluate some properties of HPC with and without plastic waste aggregate and compared between them. The natural sand is substituted with the PET-aggregate at dosages (0%, 2.5%, 5%, and 7.5% by volume of the sand) to produce High Performance Concrete mixes, in addition, using superplasticizer (SP), and 10% silica fume (SF), as a partial replacement by weight of cement. The results indicated that fresh concrete including PET-aggregate showed lesser workability and the reduction in slump reach to 68.75% for 7.5% replacement. The physical characteristics (bulk density, porosity, water absorption and ultrasonic pulse velocity testing) and static modulus of elasticity of HPC were evaluated. The ultrasonic pulse velocity, bulk density and water absorption slightly decreased with the increase of PET particles. Same trend appeared in static modulus results which dropped 6.85%, 7.43%, and 10.18% for M2.5, M5, and M7.5 respectively. Replacement of fine aggregate with Flaky PET-aggregates leads bridging the two separated concrete pieces and therefore prevented concrete from breaking apart after failure. Keywords—Sustainability, Waste plastic, PET- bottles, High performance concrete. I. INTRODUCTION Three hundred million tons is the amount of the annual increasing of plastics production all over the world. In ten years, the European plastics production was increased by fifty percent, and then stabilized. This leads to generate a huge quantity of about twenty five million tons of waste plastics, which represent more than sixty three percent of daily used packaging. These large quantities of wastes should be reused or recycled. In fact, only thirty six percent is transformed to energy and twenty six percent is recycled, whereas about forty percent is burying underground [1]. Today environment issues all over the world focus on the use of alternative environmentally friendly materials like natural fiber composites. The benefit from using waste plastics for producing eco-friendly sustainable composite materials is the further option [2]. The reuse and recycle waste materials is become an important issue from the following viewpoints: environmentally pollution decrease, saving and sustaining natural resources, and save and recycle energy production processes. So, concrete is one of the feasible options [3].Many studies were conducted to study the possibility of using and enhancing the properties of concrete by adding waste plastic as fibers [4-9]. Also reusing of waste plastic by partial replacing of sand or coarse aggregate by waste plastic for production of sustainable concrete were doing by many researchers[10-14]. This replacement leads to decreasing in density, workability and slightly increasing in flexural strength. In a 1990 publication, Mehta and Aitcin[15] suggested the term high performance concrete (HPC) for concrete mixtures that possess the following three properties: high-workability, high- strength, and high durability. There was many defintions of this kind of concrete by Forster[16], Papworth and Ratcliffe[17], Ryan and Potter[18], Federal Highway Administration (FHWA)[19] and ACI 116R-00[20]. Based on the previous literatures, it can be noticed that there are considerable amounts of research that deals with normal concrete engineering properties which contained PET particles as a partial replacement of aggregate. Because of, there is a lack of data dealing with adding of PET particles as aggregate on the properties and durability of HPC, this research aims to study some properties of HPC, which contained PET-aggregate as partial replacement of sand, like workability, modulus of elasticity, bulk density and dynamic modulus of elasticity. II. EXPERMENTAL PROGRAM A. Materials In casting all specimens throughout this work, Portland cements class (I) has been used. According to results of chemical Effects of Adding Waste Plastics on Some Properties of High Performance Concrete Abdulkader I. Al-Hadithi Mahamood Fawzi Al-Ani Dams and Water Resources Engineering Department Civil Engineering Department College of Engineering, University of Anbar College of Engineering, University of Technology Ramadi, Anbar, Iraq Baghdad, Iraq Email: al_hadithi2000@yahoo.com Email: mahmodmfa81@gmail.com 273 2018 11th International Conference on Developments in eSystems Engineering (DeSE) 978-1-5386-6712-5/18/$31.00 ©2018 IEEE DOI 10.1109/DeSE.2018.00055