A NOVEL GREEN SOLUTION TO MITIGATE GREEN HOUSE GAS EMISSION FROM CEMENT INDUSTRIES – GEOPOLYMERA. Ranganathan and R. Malathy
Renewable energy sources are being used throughout the world and one of these is Thermal waste. In order to address environmental effects associated with ordinary cement, there is need to use other binders to make concrete. Hence environmental preservation has become a strong driving force behind the search for a new sustainable and environmental friendly cementitious material. Towards this, Fly ash is being studied as a candidate material. It is no longer a waste product, but a eco-product available in abundance from coal fired power plants in India. An effort in this regard is the development of geopolymer products, synthesized from the materials of geological origin or by product materials such as fly ash, which are rich in silicon and aluminium. Geoplymer is a material, introduced by Davidovits in 1978. Geopolymer is a new product in which no cement and no water is added and it is a mixture of source material such as flyash and alkaline liquids. Alkali-Activated fly ash is an innovative breakthrough, which is free from hydration process, alkali-aggregate reaction and highly durable in aggressive environments. This cement is more eco-friendly, and high strength when compared with ordinary Portland cement. This innovative Geopolymer products can be used for all pre fabricated structures and it is a best alternative for ordinary concrete. This experimental study was undertaken to identify the correlation between Non destructive testing (NDT) and Experimental strengths of Geopolymer concrete and its durability also.. The test results gathered the comparision between Normal concrete and geopolymer concrete. Good correlation between NDT and Experimental strengths of gpc was found.
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