Conference Papers
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Item Physico-mechanical properties of concrete with industrial waste-A case study(Avestia Publishing info@avestia.com, 2019) Gayana, B.C.; Shashanka, M.; Rao, A.N.; Ram Chandar, K.A few waste materials, such as demolition waste, steel slag, quarry dust, fly ash are dumped in landfills. This causes environmental issues and pollution. The present study aims to examine the effect of replacing two types of waste materials i.e., quarry dust and steel slag as partial replacement of cement and sand respectively. Cement was replaced partially with quarry dust between 5 to 20% with 5% intervals and sand was replaced by 75% steel slag consistently for all the concrete mixes. The concrete cubes, beams and cylinders were tested for their strength characteristics by measuring compressive strength, flexural strength and splitting tensile strength. The maximum increase of 4%, 34% and 38% in compressive, flexural and splitting tensile strength respectively was observed with 15% quarry dust replaced with cement and 75% steel slag replaced with sand. Based on the present experimental study, partial replacement of these waste materials shall mitigate the issues occurring due to storage and also by utilizing these materials in concrete as replacement for cement and sand resulting in higher strength properties compared to the naturally available construction materials. © 2019, Avestia Publishing.Item Strength aspects of High Performance Concrete by using Waste Material as replacement of Fine Aggregate in various percentages(IOP Publishing Ltd, 2020) Gnanasundar, G.V.; Thangaraj, P.; Shanmugam, T.High Performance Concrete (HPC) is becoming extremely popular now a day in applications, which require substantial improvements in structural capacity and resistance to aggressive environments. Several researchers have tried different mineral admixtures like Fly Ash (FA), Silica Fume (SF) and Ground Granulated Blast Furnace Slag (GGBS) in producing HPC. These admixtures are generally by-products of other industries and hence their properties are not identical and it is very difficult to assure the quality. This paper proposes a relatively new mineral admixture called High-Reactivity Metakaolin (HRM) with potential utility in the production of High Performance Concrete. In recent years Metakaolin is identified as a new pozzolanic admixture which is cost effective, cheaper and can also be considered as best alternative to micro silica. To achieve the economy, Metakaolin which is derived from purified kaolin clay is adding with ordinary Portland cement as partial replacement. In additional strength add with Glass fiber to use for ordinary Portland cement. The Fiber used in this investigation is E-Glass fiber made from glass material of size 6mm and 12mm diameter respectively. Except for control concrete, quarry waste fine aggregate was used in all concretes as a partial replacement of natural sand. The effects of quarry waste fine aggregate on several fresh and hardened properties of the concretes were investigated. It was found that quarry waste fine aggregate and waste recycling coarse aggregate enhanced the slump and slump flow of the fresh concretes. But the unit weight and air content of the concretes were not affected. The overall test results revealed that quarry waste fine aggregate can be utilized in concrete mixtures as a good substitute of natural sand. The experimental work comprises of Compressive Strength test, Split Tensile strength test and Flexure test was conducted. In this experimental investigation, M30 grade were obtained by replacing 0 to 15% replacement of quarry dust instead of Fine aggregate, 0 to 10% of Metakaolin added as supplementary in cement. It shows better result in the mix of 7.5% of Metakaoiln, 0.5% of fiber and 10% of quarry dust in concrete. © 2020 Published under licence by IOP Publishing Ltd.