Effect of Fly Ash, Marble Dust and Glass Fibres in the Physical Properties of Concrete : A Review
Keywords:fly ash, marble dust, glass fibres.
Using Industrial rejects as alternatives to conventional materials is becoming the most attractive option for sustainability in concrete production. Fly ash is a waste material obtained from thermal power plant during combustion of pulverized coal. The marble industry produces a huge amount of waste which is marble dust. The marble dust is generally a highly polluting type of industrial waste due to its alkaline nature and its manufacturing and processing techniques, all of which impose serious health threats to the surrounding. Glass fibres are also a waste product obtained by glass industries. To produce a concrete having low cost by combining different ratios of fly ash with cement and to lower the problems caused by the fly ash on disposal and environmental aspects. The unusual use of fly ash in concrete formation as a supplementary material of cement must be checked as an alternative material to the traditional one. Also, we must seek an alternative for the fine aggregate materials like sand as they are the earth materials which are non-renewable sources by their nature. So, as to find the best replacement of the sand we can use the marble dust. Since, both of the materials we are focusing about are fly ash and marble dust are the wastes or the by product and hence need to be dump somewhere which will cause more problems to the environmental as well as aesthetic aspects. So as to be more optimistic, one must try the alternatives to replace the construction or building materials like cement and sand by fly ash, and marble dust. And here in this project. A series of experiments have been done in a row to detect the optimum percentage of replacement of cement by fly ash whereas sand is to be replaced by marble dust for determining the mechanical properties of concrete. The grade of concrete taken was M30 and grade of cement was 43 OPC. The experimental works carried out for the research were done to find the feasible percentage replacements of constituent materials by supplementary materials. Cement was partially replaced by fly ash at 20%, 30%, 40% and fine aggregate (sand) is partially replaced by marble dust by 20%, 40%, and 60%. Glass fibres were kept constant 1% by concrete and compressive strength, tensile strength and flexural strength will be compared by conventional concrete.