PREPARATION AND CHARACTERIZATION OF FLYASH BED MADE BY USING GGBS AS ADMIXTURE

Talking about production in India, about 184.14 metric tons was produced only in 2014-15. And in this number, the amount that was used was only about 102.59 metric tons which accounts of about 61 percent of the year 2015-2016, where the generated flyash accounted 176.74 metric tons. In this, only about 107.77 metric tons or about 60.97 percent was used. We can see that the flyash is getting increasingly produced and used but almost 40 percent of the substance comes put as waste. This unused flyash will either go down as a landfill and will cause ecological issues. Based on the landfills, a few heavy metals like boron, mercury and cadmium with finest particles of this substance get fileted into ground water and lead to contamination of ground water. Even air pollution is caused due to he flyash that emerges as a waste. This study tries to make effective and efficient use of flyash that can be used as geo-engineering material. Products utilized in this study were flyash of F-class and emerged out Adhunik Metalics Limited in Sundergarh. Properties relating geo-techniques such as UCS strength, specific gravity, MDD, and OMC were found out for the flyash. To augment flyash features, it was amalgamated with a slag and lime in distinct proportions. A quantity of line was added to flyash in different percentages such as 0 percentage, 5 percentage, 10 percentage, 15 percentage and 20 percentage. Also, quantities of amalgamations of slag, flyash and lime were mixed for the test. The process that too place was light compaction test and this brought forward MDD and OMC in distinct proportions of flyash mixed with GGBS and lime. The samples were then cured by keeping the average temperature at 28 degrees C and the models were wax-sealed with curing period varying between 0 days, 7, 14 days and 28 while the determination of UCS takes place. While the samples were tested using a hydrometer, flyash was found to be graded consistently while the particles size was found to lie somewhere between silt and fine sand. At high OMC, the determined MDD was less. When the flyash was treated with slag and lime, MDD was enhanced and reduction of OMC took place. For virgin flyash, the value of UCS was too low but after getting lime treatment it enhanced quickly but in a bit. For flyash solution treated with lime, UCS was augmented while the curing period increased as well. The value of UCS for flyash solution treated with slag was quite less when quick testing was done and while the enhancement in periods of curing took place, the value of UCS enhanced quite a bit. Flyash strength due to treatment with slag and lime tend to be the most when it was cured for about 28 days.