STRENGTH PROPERTIES OF GEOPOLYMER CONCRETEUSING STEEL FIBRE

Abstract

The building industry's rising carbon emissions have made the utilisation of alternate materials called Geopolymer Concrete (GPC) which is absolutely necessary for construction. Concurrently, the vulnerability of concrete as a material to severe climatic conditions has necessitated the development of weather-resistant geopolymer concrete. It has been demonstrated that the addition of steel fibres to traditional fiber-reinforced concrete can improve the material's resistance to cracking, which in turn can favourably working in the construction field. Despite this, there have only been a few research that investigate the addition of steel fibre on the property attributes of geopolymer concrete that has been cured at room temperature and has a low NaOH content of 8 millilitres per litre. Fly ash, ground granulated blast furnace slag (GGBS), sodium hydroxide, sodium silicate, Manufacture sand (M-Sand), Fine aggregate and Coarse aggregate were used in the preparation of an ambiently cured geopolymer concrete for the purpose of this investigation. In addition, steel fibres with an aspect ratio of 60 were added to mixture in doses of 0%, 0.5%, 1%, 1.5%, and 2% based on the volume fraction of the mixture.  The incorporation of fibres resulted in an increase in the compressive strength, split tensile strength, and flexural strength of geopolymer concrete. The optimal fibre dose was 1%, which resulted in a maximum strength of ,  and  respectively, for compressive strength, split tensile strength, and flexural strength. When the dose was increased beyond what was considered to be optimal, the GPC strength also gets decreased.