A Study On Flexural And Shear Behavior Of Geopolymer Concrete Beam With Carbon Fibre

Abstract

Concrete technologists have been working tirelessly over the past few years to reduce the amount of Portland cement used in concrete. The second most consumed material on earth is cement concrete because it is a crucial and frequently used component of the construction sector. In addition to dust emissions, the depletion of non-renewable resources and energy used during production, Portland cement production is regarded as one of the biggest contributors to CO2 emissions. In order to achieve sustainable development, it is deemed necessary to reduce or eliminate the usage of cement in concrete and substitute it with widely accessible industrial by-products like fly ash and GGBFS (Ground Granulated Blast Furnace Slag). The use of partial replacement has been successful, and regulations have been created to reflect this. Research is still being done to completely replace cement with alumina and silica-rich industrial products. When these materials are activated by an alkaline solution, they exhibit higher strength and increased durability qualities that are comparable to those of regular cement concrete. Utilizing these ingredients significantly reduces the amount of embodied energy, carbon and water while producing concrete that is comparable to regular concrete of lower strength categories. newline newlineThe study emphazises on eliminating cement completely while examining the potential applications of fly ash and GGBFS in conjunction with sodium-based alkaline activators in a ratio of 1:2.1 keeping molarity of 8M constant for M20 and M40 grade geopolymer concrete. These raw materials were used to cast cubes, cylinders, and beams in a laboratory, where the strength and durability criteria were examined. Also taken into consideration was the impact of 50:50 ratio of fly ash with GGBFS. Since, geopolymer concrete lacks a design mix procedure, a step-by-step procedure is proposed and adopted according to the specifications of IS 10262-2019.