THE EXPERIMENTAL STUDY ON UTILIZATION OF GRANITE WASTE DUST IN GEOPOLYMER CONCRETE

Abstract

The main activity of the mining industry is the sawing and polishing process of rock blocks. This activity
produces a large amount of mud consisting essentially of SiO2, Al2O3, Fe2O3, and CaO. This is estimated at 32-40 cubic
meters/day [1]. After the stone was air-dried, it became a very good material that was easily inhaled by humans and
animals. It was thought to cause severe lung disease in the local people and could cause serious damage to the
environment, such as soil and groundwater contamination, if not effectively treated before treatment. It has been shown
that utilization of waste materials which are rich in aluminosilicate content can be used in geopolymer concrete.
Through geopolymerisation waste materials can be transformed in building material with excellent mechanical and
durable properties like acid resistance and fire resistance. In this research work, polymerization of Granite waste in
replacement of fly ash (Class F) with different alkali-activators based on combinations of Na2SiO3 and NaOH has been
investigated. The geopolymer concrete was prepared with varying doses of granite waste dust in replacement of fly ash
like 10%, 30%, 50%, 70%, 100%. The geopolymer concrete is prepared with 0.5 alkaline solutions to fly ash ratio. The
compressive strength of 16-65 MPa was obtained in different replacement of granite dust in geopolymer concrete. The
performance of these geopolymer concretes in aggressive environments has also been studied using tests for acid
resistance and Rapid chloride penetration test. Compared with ordinary concrete, all geopolymer concretes exhibit
excellent acid corrosion resistance (5% of H2SO4+HCL).