Biswaroop Ghosh1 Dr.A.k.Rath2
1 Student, Civil engineering department, K.I.I.T. University, Patia, Bhubaneswar
2 Civil engineering department, K.I.I.T. University, Patia, Bhubaneswar
Email-biswaroopghosh1996@gmail.com
Abstract
Coal is a very promising material in industry for a growing country like India. But the fly-ash coming out from the industry is creating a great threat to the environment. Fly-ash is mainly used for the dumping purpose or as a fine aggregate. The study is aimed to develop a technique for producing an aggregate with the fly-ash and use it in the in replacement of normal coarse aggregate. The properties of fly-ash were experimentally checked whether it is of type-C or of type-F by chemical analysis of the fly-ash. Batches of fly-ash aggregates were manufactured using cold bonded technique using disc pelletilizer. Based on the crusing value, water absorption and impact value test results of their properties, fly-ash aggregates were selected. Using the fly-ash aggregates prepared from the cold bonded technique, they were used for producing different types of concrete mixture. Different types of concrete specimens were produced where the proportions of fly-ash aggregates of different sizes differ in each specimen by using different types of super plasticizer. Based on the test results of the physical and chemical properties of the specimens, they were tested for compressive strength for 7 days,14 days and 28 days and the gradation of concrete mixture was determined. These pellets, used in concrete mixture will be light in weight and will have high load bearing capacity. At the same time, they will also address some of the environmental problems such as disposing the industrial waste which is being generated from thermal waste.
Keywords: Fly-ash aggregate, Fly-ash pellets, Super plasticizer, Cold-bonded technique.
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