Experimental Study on Effect of GGBS on High Strength Concrete

Concrete is the most widely used man-made construction material in the construction world. It is obtained by mixing cement aggregate sand water in required proportion. With increase in demand of concrete, more and more new methods and new materials are being developed for production of concrete. Sometimes certain additives are added to it to improve or alter some properties. Making concrete is an art which has to be perfectly done, otherwise that will end up with bad concrete. Hence as a Civil Engineer one should be thorough with the entire factors from which a good concrete is produced. A concrete using cement alone as a binder requires high paste volume ,which often leads to excessive shrinkage and large evolution of heat of hydration ,besides increased cost .An attempt is made to replace cement by a mineral admixture ,(i.e.),ground granulated blast furnace slag (GGBS) in concrete mixes to overcome these problems. This paper presents the workability study of concrete with GGBS as are placement material for cement with addition of superplasticiser. Concrete grades of M40 have been taken for the work. The mixes were designed using IS Code method. GGBS replacement adopted was 0% to 50. Slump test, Compaction factor test, Vee Bee Consistometer test was conducted. Effect of replacement of cement by GGBS at various percentages and on the grades of concrete chosen with Superplasticiser This paper focuses on investigating characteristics of M40 grade concrete with partial replacement of cement with ground granulated blast furnace slag (GGBS) by replacing cement 0% to 50% The cubes, cylinders and beam are tested for compressive strength, split tensile strength, flexural strength.