EFFECTS ON STRENGTH OF CONCRETE BY PARTIAL REPLACEMENT OF CEMENT WITH FLY ASH AND PAPER SLUDGE ASH

Abstract

In this dissertation study on utilizations of waste paper sludge ash to produce on economic concrete by blending various ratios of cement with waste paper sludge ash along with fly ash there by and to reduce disposal and related pollution problems. The innovative use of waste paper sludge ash in concrete as a supplementary cementitious material along with fly ash explored. The main aim of this study is to evaluate the effects on the proportion of concrete with paper sludge ashafly ash (as partial replacement of cement) in concrete when it is mixed in cement concrete for workability, and strength of concrete using OPC (43 grade). Paper sludge ash is supplementary cementitious material and fly ash is pozzolanic materials that can be utilized to produce highly durable concrete composites. In this study waste paper sludge ash has been used to partially replace OPC which varies from 0% to 15% at interval of 5% by total weight of OPC and similarly cement has been replaced by fly ash which varies 0% to 15% at interval of 5% by total weight of cement in the equal proportion and prepared for M25aM30 grade of concrete. This study investigates the performance of concrete under the influence of paper sludge ash and fly ash in terms of slump and compressive strength at 7 days and 28 days, flexural strength of beam at 28 days and splitting tensile strength of Cylinder at 28 days respectively. The required of specimens of cubes, cylinders and beams were casted for testing to study the influence of paper sludge ashafly ash on concrete. These Concrete specimens were deep cured in water under normal atmospheric conditions in laboratory On the basis of result that paper sludge ash and fly ash mix concrete was found to increase in all strength (Compressive, FlexuralaSplitting Tensile strength) of various mix of concrete at all age when compared to normal concrete. Its use should be promoted for better performance as well as for environmental sustainability. Test results indicate that use of waste paper sludge ash in concrete has improved the performance of concrete.