Experimental Evaluation of Glass Fibre reinforced Geopolymer Concrete (GFGPC)

Abstract

This paper present the effects of glass fibre on strength and durability properties of Geopolymer concrete. Strength properties were studied through compressive, flexural and split tensile strength tests.Durability properties were explored through the results of water absorption and sorpitivity tests. Locally available fly ash from the industries was used. Sodium silicate and sodium hydroxide were used as alkali activators and its ratio is kept as 2.7. Alkali solution to fly ash ratio as 0.35 and glass fibres was added with the variation of 0.005% to 0.035% by volume of concrete. The strength parameters of Glass Fibre Geopolymer Concrete (GFGPC) were made compared with the control Geopolymer Concrete (GPC). Glass fibres, In spite of being tensile nature, the Glass Fibre Geopolymer Concrete (GFGPC) has increased its compression, flexural and split tensile strength of about 10.5%, 57% and 39% respectively. It was observed that the maximum strength values were attained at the inclusion of 0.025% of glass fibres and further adding by 0.005% there is decrease in strength of about 3.4%, 3.2% and 0.6% as compared to 0.025% inclusion.