IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) e-ISSN: 2278-1684,p-ISSN: 2320-334X, Volume 12, Issue 2 Ver. II (Mar - Apr. 2015), PP 64-70 www.iosrjournals.org DOI: 10.9790/1684-12226470 www.iosrjournals.org 64 | Page Application of Recycled Coarse Aggregates and E-Waste for Pavements with Low Traffic Rajiv Gupta a , Harish Puppala b , Nakka Rajesh c q Senior Professor, Civil Engineering Department, Birla Institute of Technology and Science Pilani, India-333031 b,c Post graduate student, Civil Engineering Department, Birla Institute of Technology and Science Pilani, India-333031 Abstract: Huge quantities of construction wastes, demolition, and electronic wastes are being generated these days in many of the countries and the disposal of them has become a serious problem. This study is an integrated experiment in which different combinations of e-wastes and recycled coarse aggregate together are used as a substitute of conventional aggregate. Recycled aggregates from site-tested concrete specimens were collected and are integrated with the e-waste by altering the proportions of these wastes. The compressive strength of M20 mix designed is assessed by casting cubes and the flexural strength by prisms. This study is carried out to ensure the usage of integrated- waste and the recycled coarse aggregate as a replacement of coarse aggregate. Experimental study is carried out to find if the e-waste strips can be used as the reinforcement instead of steel. Results are checked against the standards of IRC to use for the sub-grade of the pavement. Keywords: e-waste (electronic waste), Conventional aggregate (CA), Recycled coarse aggregate (RCA), compressive strength, IERA (Integrated e-waste and recycled coarse aggregate), Indian road congress IRC. I. Introduction Due to the unprecedented growth in the industries all over the world there is a depletion of natural aggregates and during this process enormous amount of waste material from construction and demolition activities is being generated. The disposal of this waste is a significant problem as it requires huge space for its disposal and pollutes the environment. The utilization of recycled coarse aggregate in the production of concrete is one of the ways to diminish this problem. Due to the continuous use of natural resources, like river sand for construction the depth of river bed is increasing which results in drafts and also change in the climatic conditions. The need of hour is to protect and preserve the natural resources like sand and stones. Several research activities were carried out to prove that recycled concrete aggregate could be a reliable alternative for aggregates in production of concrete. The concrete produced by using RCA should be used only for the non-structural applications [1].Since the strength of concrete is dependent on the type of coarse aggregate used there is a great need to know the characteristics of RCA. As the properties of RCA used in several research works are not same the optimum dosage of the RCA is still a fuzzy number. For the applications of medians, sidewalks, curbs and bridge foundations processed RCA can be used [2].Recycled coarse aggregate normally has higher water absorption and lower specific gravity [3]. The workability of RCA is less as the water absorption of the aggregate is more when compared with the conventional aggregate [3].The density of recycled coarse aggregate used is lower than the density of normal aggregate. Porosity of recycled coarse aggregates is also much higher than those of natural aggregate [4]. The flexural strength drops by 13% with the 100% replacement of coarse aggregate [5].The strength of RCA is reported to be less by about 10% compared to normal concrete [6]. The second type of waste used in this study is e-waste whose production is being increased due to the growth in population, which leads to the upswing of e-waste production. The electrical appliances after use are treated as waste. Every year million tons of electronic waste from obsolete computers and other electronic articles are being generated. Characterization of e-waste is of paramount importance for developing a cost effective and environmental friendly recycling system. The European community directive has classified the electrical appliances into large household appliances, Small household appliances, Toys, leisure and sports equipment, Electrical and electronic tools, IT and telecommunication equipment, Medical devices, Consumer equipment, Monitoring and control instruments, Lighting equipment, Automatic dispensers [7].E-waste contains numerous types (more than 1000 different) of substances and chemicals creating serious human health and environment problems if disposed in the open environment[8].It was estimated that the e-waste inventory based on this obsolescence rate and installed base in India for the year 2005 as 146180.00 tones. That was expected to exceed 8, 00,000 tons by 2012. Mega cities like Delhi, Mumbai and Bangalore contribute most of the e-waste generate in India. A tradition of recycling the