• Rajesh Joshi
• Dr Shalini Yadav

Abstract : Geopolymer concrete is manufactured from application of waste material from industrial waste such as fly ash. Geopolymer concrete is a type of concrete by which it can be used in applications to fully or partially replace OPC with environmental and technical alternative to Ordinary Portland Cement (OPC) based concrete. In the manufacturing industry the creation of Portland cement causes the emission of air pollutants which results in ecological pollution. It reduces 80 - 90% of CO2 emissions. Coconuts fiber is collected from temples & shops and it is burn in open air then the ash obtained by coconut fiber ash is passed through 150 micron sieve. And then replacement of class f fly ash by coconut fiber fly ash replace 0%, to 20% and when it is increase from 20% i.e. up to 25% result obtained is decreasing in compressive strength. The color of fly ash may vary from tan to dark grey, depending upon the chemical and mineral constituents. The other characteristics of fly ash which are benefits, & its main aim to reduce carbon dioxide up to 80-90% and improved resistance to fire, impermeable and aggressive chemicals. Fly ash plays a vital role in Geopolymer concrete, and class f fly ash is used in construction purposes which contain 10% of lime also to replace the use of conventional ordinary Portland cement. The binding agent is the only difference to the ordinary Portland cement concrete because opc is responsible for high content of energy losses and it requires high temperature for manufacturing. To activate the substance in fly ash, sodium hydroxide solution and sodium silicate solution was used in combination. Advantage of geopolymer concrete is, it is non-toxic, it easily sets at room temperature, higher compressive strength, higher resistance to heat and resist to all inorganic solvent and sustainable generally considered are loss on ignition (LOI) which is the measurement of unburnt carbon remaining in the ash, fineness and uniformity.

IndexTerms– geopolymer concrete, Coconut fiber ash, fly ash, sodium hydroxide, sodium

"OPTIMIZING THE STRENGTH OF RIGID PAVEMENT BY USE OF CLASS F FLY ASH IN GEOPOLYMER CONCRETE BY COCONUT FIBER ASH", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.7, Issue 11, page no.345-354, November-2020, Available :http://www.jetir.org/papers/JETIR2011337.pdf

"OPTIMIZING THE STRENGTH OF RIGID PAVEMENT BY USE OF CLASS F FLY ASH IN GEOPOLYMER CONCRETE BY COCONUT FIBER ASH", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.7, Issue 11, page no. pp345-354, November-2020, Available at : http://www.jetir.org/papers/JETIR2011337.pdf