EXPERIMENTAL EVALUATION OF ECO-FRIENDLY NO-FINES GEOPOLYMER CONCRETE FOR SUSTAINABLE PAVEMENT APPLICATIONS

Abstract

Objectives: Water penetration and storage abilities make No-fine cement concrete unique as a pervious concrete, while using it in pavements to decrease flood risks. But still cement is the main part as a binder material, which contributes in global warming by having carbon dioxide emissions during cement production in plants. New researches have shown geo-polymer technology a good alternative material for concrete to omit cement and combat against the global warming which the world is concerned nowadays. No-fine geo-polymer concrete is the solution for both global warming and flood risks. Methods: This paper aims to find M20 grade eco-friendly no-fine geo-polymer concrete having ingredients of fly ash waste material, coarse aggregates, sodium hydroxide, sodium silicate and ground granulated blast furnace slag in different percentages to enhance its compressive strength by experimental various trials have ratio 1:4 to 1:8 of powder to aggregates. Findings: A ratio, 1:4 with 20% replacement of fly ash by ground granulated blasted furnace slag gave satisfactory compressive strength of 21.52 N/mm 2 with 16632.85 mm/hour infiltration rate. Application/Improvements: Based on findings No-fines geo-polymer concrete can be used in low traffic pavements to combat against the flood risks and recharge ground water. Furthermore, research scholars are expected to use high morality of sodium hydroxide and lower size of aggregates which may increase the compressive strength of No-fines geo-polymer concrete.