REVIEW ON PERFORMANCE OF NORMAL AGGREGATE CONCRETE WITH RECYCLED AGGREGATE CONCRETE

Recycled aggregates are comprised of crushed, graded inorganic particles processed from the materials that have been used in the constructions and demolition debris. The aim for this project is to determine the strength characteristics of recycled aggregates for ap-plication in high strength structural concrete, which will give a better understanding on the properties of concrete with recycled aggre-gates, as an alternative material to coarse ag-gregate in structural concrete. The scope of this project is to determine and compare the high strength concrete by using different per-centage of recycled aggregates. Recycled aggregate is also the type of artificial aggregate which is obtained from Construction and demolition (C&D) wastes. Constructions and demolitions are processes that go hand in hand. The demolished building rubble in India generally goes to waste in landfills. Recycling of these concrete waste materials from building demolition can provide a solution to this problem. The investigation was carried out us-ing workability test, compressive test and indi-rect tensile test flexural test. There were total of six batches of concrete mixes, consists of every 20% increment of recycled aggregate replacement from 0% to 100% for each grade of concrete. The workability of concrete consi-derably reduced as the amount of recycled aggregate increased. This was evaluated through standard slump test. For strength cha-racteristics, the results showed that a gradual-ly decreasing in compressive strength, tensile strength as well as flexural strength as the percentage of recycled aggregate used in the specimens increased. Conservation of natural resources and protection of environment is the key to sus-tainable development. Construction engineers and the researchers have to share this critical responsibility. Research is in progress to ex-plore new civil engineering materials which can contribute to the sustainable development. The environmental impact of production of raw ingredients of concrete (such as cement and coarse aggregates) is considerable. The scale of the problem makes it prudent to investigate other sources of raw materials in order to reduce the consumption of energy and available natural resources. In this project program was undertaken which contains a brief analysis of properties of coarse recycled aggregates and judged its effectiveness in use of concrete