An Experimental Investigation on Usage of Crushed Laterite as Partial Replacement for Coarse Aggregate in GGBS Incorporated Concrete

Civil Engineering sector is the second largest contributor for the Indias GDP. It is expanding at a faster phase due to large scale infrastructure works. The rapid development in the sector has led to exploitation of natural materials which are needed for the inevitable part of construction sector - Concrete. Concrete is consuming huge quantity of coarse aggregate which is depleting the natural resource. It is the call of the day to find the alternative for coarse aggregate as the same sourse used as raw material in the production of M-sand which is substitute for river sand. Because of great demand, pollution and high energy consumption due to crushing of natural stone there is need to find alternative. This research is focusing on one such natural alternative which is available in excess in the Western and Eastern Ghats of the sub-continent – Laterite. Laterite is a natural rock which is generally cut into blocks to be used as construction material. From studies it is evident that, by extraction of these stones, there is positive impact on the environment, hence it is eco-friendly. As one ton cement production emits almost the same amount of carbon di oxide into the atmosphere, lots of research has been carried out to obtain optimum replacement to cement. By studies, 25% of cement has been replaced by Ground Granulated Blast Furnace Slag (GGBS) in the convention Mix itself. Laterite fines are replaced to conventional coarse aggregate at 5, 10, 15, 20, 25 & 30 % by weight and its effects on the properties of concrete are depicted in this research. It is any attempt to find a natural alternative coarse aggregate for the sustainable development.