Published Paper Details:

Due to rapid industrialization, the waste products are also being generated in huge quantity which occupies large quantity of precious land as well as creating environmental problems. Recycled Concrete Aggregates (RCA) which is generated as a part of Construction and Demolition material is a type of waste product. In the same way, Blast furnace slag is also a waste product of steel production. As the construction of pavements requires a massive amount of aggregates, the replacement of part of fresh aggregates with mixture of Recycled Concrete Aggregates (RCA) and Blast furnace slag will be very advantageous considering the dearth of fresh aggregates. Therefore, an attempt has been made in the present study to determine the optimum proportion of Recycled Concrete Aggregates (RCA) and Blast furnace slag as Base material in pavement. The main objective of the study is to select the best possible percentage to increase the bearing capacity of sub base granular layer. The cost of construction of the pavement is considerably decreases if locally available low cost materials are used in the construction of sub base, sub grade etc. The design of pavement is based on the minimum specified structural quality of the soil that will be achieved for each layer of material. Each layer must resist shearing and avoid too many deflections that cause fatigue. It is also used to decrease the compressibility and permeability of the soil mass and to increase its shear strength. As the quality of the soil is increased, the ability to distribute the load is increased so that a drop in the thickness of the soil is also permitted. Use of by- products is also a way to protect environment from the harmful effects of recycled aggregates and blast furnace slag as they are required to be dumped in open grounds or beneath the surface which affects the natural formation of the soil and degrades the surface. In this research various laboratory tests like atterberg limits, proctor test and CBR i.e California bearing ratio test is performed and the best possible combination of the required proportion is selected.