EXPERIMENTAL STUDY WITH POND ASH AS PARTIAL REPLACEMENT OF FINE AGGREGATE IN CONCRETE WITH SUPER PLASTICIZER

Prashant Kumar Sharma, Himani, Varsha Dabas

Abstract: The Energy usufruct and outturn is amplifying day by day due to quick industrialization and urbanization these days. A major section of the energy is originated from Thermal Power Plants. Present scenario of country shows 85% of country’s total power origination is from thermal power plants, of which coal-based generation is around 90%.During the deflagration of crushed coal at thermal power station the product formed are bottom ash, fly ash, vapors and pond ash. The ash collected from ESP’s and the bottom ash with water is disposed in a slurry form in large ponds and dykes which produces Pond ash. In present study the Pond ash has been used as a partial replacement of fine aggregate by weight in ratio of 0%(B0), 5%(B1), 10%(B2), 15%(B3), 20%(B4), 25%(B5). The properties of Pond ash were compared to Fine aggregate. The standard concrete of grade M35 and pond ash mixed concrete of same mix design were compared to understand the mechanical properties of concrete such as compressive strength and workability. A chemical admixture CONPLAST-SP430 is also used for better fulfillment of workability of concrete due to vast dosage of pond ash. The concrete specimens were tested at 3, 7, 14, 28 days of curing period. The Experiments study indicates that Pond ash as a partial replacement of fine aggregate shows beneficiary effects over mechanical properties of concrete. The test results indicate that optimum Pond ash replacement is 15%, where there is a relative increment of compressive strength was obtained up to 13.65%. The bulk density and specific gravity of Pond ash is lower to Fine aggregate causes decrement in unit density of concrete. The main aim of this study is to use hazardous waste by product into building industry to achieve economical and eco-friendly concrete.

Keywords: Bulk density, Specific Gravity,Fine aggregates, Pond Ash, Chemical admixture.

DOI: https://doi.org/10.15623/ijret.2018.0707010