STUDY OF EFFECT ON STRENGTH OF GEO-POLYMER CONCRETE

Abstract

This study represents the effect of Geopolymer concrete prepared with the locally available materials. The Geopolymer utilizes industrial by-products such as fly ash, which disposed in landfill. Therefore the use of geopolymer not only reduces the emission of the carbon dioxide (CO₂) in atmosphere but also utilizes industrial by-products. The fly ash is procured from the nearest thermal power plant.  The geopolymer consist of fly ash, coarse aggregates and fine aggregates and alkaline liquid. Alkaline liquid formed by mixing of sodium hydroxide (NaOH) and sodium silicate (Na₂SiO₃). The study describes the result of the test preformed. All the cubes are cured and tested for comparing the compressive strength of cubes. Alkaline liquid is prepared before 24 hours of the mixing of materials. The dry mix of material is done for about 2-3 minutes and in that alkaline liquid is mixed for 3-4 minutes. Prepared the concrete blocks and provide them a rest period for about 24 hours. Then curing is done at different temperature in oven.  The compressive strength of geopolymer concrete depends on curing temperature and duration of heating hours. The percentage of CaO is highly influences the strength of geopolymer concrete.