STUDY ON STRENGTH PROPERTIES OF LOW CALCIUM BASED GEOPOLYMER CONCRETE

Geopolymer concrete is a cement less concrete gaining popularity globally towards the sustainable development. It is a type of amorphous alumino-silicate cementitious material which can be synthesized by polycondensation reaction of geopolymeric precursor and alkali polysilicates. Beside fly ash, alkaline solution is utilized to make geopolymer paste which binds the aggregates to form geopolymer concrete. In this experiment an attempt is made to study the compressive, flexural and split tensile strength properties of geopolymer concrete. Concrete cubes of size 100 x 100 x 100 mm or 150 x 150 x 150 mm, beams of size 100 x 100 x 500 mm and cylinders of 150 mm diameter x 300 mm length are prepared and cured under ambient curing. The compressive strength was found out at 7 days and 28 days.