International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 06 Issue: 06 | June 2019 www.irjet.net p-ISSN: 2395-0072 © 2019, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 3779 Effect of Expanded polystyrene (EPS) on Strength Parameters of Concrete as a Partial Replacement of Coarse Aggregates Hitesh Patidar 1 , Mayur Singi 2 , Abhijeet Bhawsar 3 1 M.Tech. Student of BM College of Technology, Indore (M.P.) 2 Head of Department Civil Engineering, BM College of Technology, Indore (M.P.) 3 Assistant Professor in Civil Engineering Department, BM College of Technology, Indore (M.P.) ---------------------------------------------------------------------***---------------------------------------------------------------------- Abstract - With the development of modern construction techniques, the demand for construction materials increases day by day. There is a strong need to utilize alternative materials for sustainable development. The usage of partial replacement of coarse aggregate using polystyrene beads in concrete gives prospective solution to building construction industry. Polystyrene beads are the waste material obtained from packaging industries. This paper handles comparison of concrete which partially replaces coarse aggregate by polystyrene beads with conventional concrete blocks. The result shows that amount of the polystyrene beads incorporated in concrete influences the properties of hardened concrete. Also, the compressive strength, Split tensile strength and Flexural Strength for M30 & M40 with 5%, 10%, 15%, 20%, 25%, & 30% replacement of coarse aggregate. The workability of mix is very high at a low water/cement ratio. Key Words: Polystyrene, slump value, compaction factor, compressive strength, split tensile strength, Flexural Strength and Strength to weight ratio. 1. INTRODUCTION The environment is facing rapid urbanization and industrialization that may change the quantity of municipal solid waste generated. Plastic waste is considered as a serious problem to the environment due to inability of plastic to degrade naturally. Polystyrene is the plastic category that is widely being used as food containers and packaging. It is normally thrown into the waste stream directly without treatment due to higher cost of recycling in comparison to manufacturing of the construction materials. Polystyrene waste is generated from both industrial and municipal solid waste. It has become a major environmental concern due to large waste quantities being disposed to landfills and it is non-biodegradable in nature. Polystyrene is a light weight cellular plastic material consisting of fine spherical shaped particles which are comprised of 99% air and 2% polystyrene. It has a closed cell structure and cannot absorb water. It has good sound and thermal insulation characteristics as well as impact resistance. There are many advantages to be gained from the use of light weight concrete. These includes lighter load during construction, reduced self-weight in structures and increased thermal resistance. Light weight concrete is generally accepted as concrete having a density of about 1800kg/m3 or less. The present investigation was taken up keeping two targets in view, disposal of polystyrene waste from the point of view of environment and for the replacement of aggregate from the point of view of construction industry. The present study is aimed at analyzing the suitability of polystyrene beads as partial replacement of coarse aggregate. 1.1 CEMENT Ordinary Portland cement is used to prepare the mix design of M-25 grade. The cement used was fresh and \without any lumps Water – cement ratio is 0.42 for this mix design using IS 456:2007.Cement is an extremely ground material having adhesive and cohesive properties which provide a binding medium for the discrete ingredients. Chemically cement constitutes 60-67% Lime (CaO), 17-25% Silica (SiO2), 3-8% Alumina (Al2O3), 0.5-6% Iron Oxide (Fe2O3), 0.1-6% Magnesia (MgO), 1-3% Sulphur Trioxide (SO3), 0.5-3% Soda And Potash (Na2O+K2O). 1.2 SAND Sand is a naturally occurring coarse material collected of finely separated rock and mineral particles. It is defined by size, being finer than gravel and coarser than silt. Sand may also consign to a textural class of soil or soil type; i.e. a soil contain more than 85% sand-sized particle (by mass).In terms of particle size as used by geologists, sand particle range in diameter as of 0.0625 mm to 2 mm. An individual particle in this range size is termed a sand grain. Sand grains are among gravel (with particles ranging from 2 mm up to 64 mm) and silt(particles smaller than 0.0625 mm down to 0.004 mm). The dimension specification between sand and gravel has remained even for other than a century, but particle diameter as small as 0.02 mm be considered sand under the Albert Atterberg standard in utilize during the early on 20th century. 1.3 AGGREGATE Aggregate are the essential constituent in concrete. They provide body to the concrete, decrease shrinkage and effect economy. Construction aggregate, or basically “Aggregate”, is