E. Chidhambar, Manjunath Y. M.; International Journal of Advance Research, Ideas and Innovations in Technology © 2019, www.IJARIIT.com All Rights Reserved Page | 290 ISSN: 2454-132X Impact factor: 4.295 (Volume 5, Issue 3) Available online at: www.ijariit.com Experimental investigation on geopolymer concrete subjected to elevated temperature Chidhambar E. chidhambar12571@gmail.com National Institute of Engineering, Mysore, Karnataka Dr. Y. M. Manjunath ymm65_nie@yahoo.co.in National Institute of Engineering, Mysore, Karnataka ABSTRACT Geopolymer concrete can be expressed as "concrete without cement". Geopolymer concrete is environmentally friendly and an inventive way to replace the conservative concrete which contributes 7-8% of total CO2 production in the world. “The concrete which entails of the source materials and the alkaline solution”. The source material can be from agricultural wastes such as Bagasse ash, Rice husk ash, Palm fuel ash, etc and the industrial by-products such as Fly ash, Ground Granulated Blast Furnace Slag, Copper Slag, etc. The alkaline solutions can be either sodium hydroxide and sodium silicate or potassium hydroxide and potassium silicate. In the present study, an effort has been made to check the likelihood of reuse of bagasse ash in Geopolymer Concrete by probing mechanical properties of M30 grade concrete for 0, 25, 50, 75 and 100 percent replacement by bagasse ash. The behavior of 100% GGBS replaced concrete under elevated temperature by weight loss, residual strength, cracking pattern and spalling pattern. Keywords— Geopolymer concrete, Sunlight curing, GGBS, Bagasse-ash, Weight loss, Residual strength 1. INTRODUCTION What is the most frequently used material on our sphere? some of you would perhaps think water and you would be right but if I were to ask you what you alleged was the second most commonly used material in our earth you might think timber or plastic or even steel so you most likely be surprised when I tell you that it is in fact concrete. This year alone the Portland cement association estimates that we will yield over 4 billion tonnes of cement worldwide for the manufacture of concrete. So, what’s the problem? The problem is finite natural resources the problem is acidification of our o ceans the problem is the type of weather change. For every tonne of cement, we produce through the crushing, heating and grinding of the limestone over three-quarters of the tonne of carbon dioxide is released into our planet’s atmosphere. This will equivalent over 3.2 billion tonnes of carbon dioxide this year alone the compatible with the emissions of 581 million cars that's all of the car wholes in Europe and America and China. Conservative concrete is made using cement and water to impasse virgin aggregate materials such as gravel and sand taken from quarries, riverbeds, and beaches not only this material relies on finite natural resources but it also yields large volumes of carbon- di-oxide. The geopolymer concrete customs the by-products materials of industrial processes such as water purification, waste incineration and the production of steel. This is united with waste materials such as GGBS, Bagasse Ash, quarry dust, agricultural waste and recycle construction aggregates to yield high-performance low influence concrete. We must move from our current model of taking, make and dispose of a more sustainable circular model to make, use and recycle. The high-performance low influence geopolymer concrete is one of the methods in which we can do this. Geopolymer concrete is a creative and ecosystem friendly building material and it’s one of the customs to replace to the normal Portland cement concrete. The employment of geopolymer concrete diminishes the mandate of the OPC which is accountable for "global warming". Geopolymer was the name given way back in 1978 by the investigator J Davidovits to the material which is made by the chains or ring structure or inorganic molecules or three-dimensional structure. Geopolymer concrete can be expressed as “A concrete without cement” which is defined as “The concrete which consists of the source materials and the alkaline solution”. The source mater ial can be from agricultural wastes such as Bagasse ash, Rice husk ash, Palm fuel ash, etc and the industrial by-products such as Fly