Investigation and Field Performance Evaluation on Road with Fly ASH_GGBFS Based Geopolymer Concrete

Abstract

Concrete is the world s most versatile, durable and reliable construction material. Large quantities of Portland cement are required for concrete. The consumption of Ordinary Portland Cement (OPC) causes pollution to the environment due to the emission of CO2. Geopolymer concrete was introduced to reduce environmental pollution that causes by production of Portland cement. newlineGeopolymer concrete is an innovative construction material which shall be produced by the chemical action of inorganic molecules. Otherwise geopolymer is an inorganic alumino- hydroxide polymer synthesized from predominantly silicon (Si) and aluminium (Al) materials of geological origin or byproduct materials such as fly ash. The term Geopolymer was introduced to represent the mineral polymers resulting from geochemistry. The process involves a chemical reaction under highly alkaline conditions on Si-Al minerals, yielding polymeric Si-O-Al-O bonds in amorphous form. Due to its high mechanical properties combined with substantial chemical resistance (magnesium or sulphate attack), low shrinkage and creep and environment friendly nature (very less amount of CO2 production in comparison with OPC), it is a better construction material for future. Geopolymer concrete has been established to be appropriate for the make use of in construction works, such as in the construction of pavements, pre-fabricated elements, box culverts, and footpaths. newlineThe present research work aims to sustainable utilization of industrial by-products in the development of road network using geopolymer concrete (GC). GC is an innovative and Eco-friendly construction material and an alternative to ordinary Portland cement (OPC) concrete. The binders such as fly ash (FA), ground granulated blast furnace Slag (GGBFS), and cement used to produce GC in this research work. These binders activated through two types of solutions (an alkaline solution which prepared in the laboratory and activator solution purchased commercially). newline newline