International Journal of Innovative Research in Engineering & Management (IJIREM) ISSN: 2350-0557, Volume-2, Issue-3, May-2015 19 EXPERIMENTAL INVESTIGATION ON COARSE AGGREGATES BY USING WASTE PLASTICS & POLYMERS K. L. A.V. Harnadh Assistant Professor , DMS SVH College of Engg , Machilipatnam A. M. N. Kashyap Assistant Professor , DMS SVH College of Engg , Machilipatnam CH. L. K. M. Gupta Assistant Professor , DMS SVH College of Engg , Machilipatnam Dr. T. Chandrah sekhar rao, Professor & HOD, DMS SVH College of Engg, Machilipatnam ABSTRACT In the present experimental study, an attempt has been made to use the waste plastics in bituminous and cement concrete pavements. The type of plastic used in this study is of waste plastic which contains Water bottles , Tins , Plastic Buckets The waste plastic material is shredded into small pieces and is made to stick to heated aggregate to form a thin layer of plastic over the aggregate particles. Here the plastic was used as a modifier for aggregates (plastic coated aggregates) and bitumen (polymer modified bitumen). Engineering properties for modified and unmodified materials (aggregates, bitumen) were conducted and compared. The plastic is used in various percentages and performance tests were conducted such as water absorption & Specific gravity test , impact test , abrasion test , crushing value test for bituminous concrete mix pavements. A study has been conducted on unmodified aggregates using these plastic coated aggregates, and compressive strength was found out. The test results showed better performance values than unmodified materials for bituminous concrete. Keywords Aggregates, waste plastics, Polymers. 1. INTRODUCTION The growth in various types of industries together with population growth has resulted in enormous increase in production of various types of waste materials, world over, posing difficult problems in developed as well as in developing countries. Today, every sector of economy, starting from agriculture, packaging, automobile,building construction, info tech , has been virtually revolutionized by the application of plastic. The various waste materials, plastic waste, tyre waste and municipal solid waste are of great concernPlastics wastes consisting of mainly items such as carry bags, cups, and thermocoles and packaging films pose a major problem for their disposalVarious organisations and researchers have made efforts to find methods for effective utilisation of some of these waste materials. The plastic wastes could be used in road construction Previous Research studies showed that there is an increase in strength of the aggregates comparing natural aggregates with plastic coated aggregates. The objectives of the present study are to:  The main objective of the study is to know about the effective utilisation of waste plastic in highway construction.  To know the wear and tear , strength durability of modified aggregates.  To analyse how the polymer structure variates the strength characteristics as well as the physical properties  To evaluate the properties of aggregates by coating plastic over it and by blending the plastic in different percentages (LDPE, HDPE, PP) and comparing with unmodified materials. 2. MATERIALS & METHODOLOGY 2.1 Materials used in the study i. Aggregates ii. Waste plastics such as bottle cans,tins,plastic bucket pieces iii. Polymers(PP ,LDPE , HDPE) 2.2 Tests conducted in the study are i. Specific Gravity test ii. Water absorption test iii. Aggregate Impact Value test iv. Aggregate Crushing Value test v. Los Angeles abrasion value test 2.3 Polymers used in the study and Properties