Adeniran Jolaade Adeala And Joseph Oladapo Olaoye

Used paper is frequently discarded and sizable portions of it either burn or become waste that litters the environment before biodegrading. The use of waste papers as a partial replacement for cement in the proportions of 0 to 15% at intervals of 5% was the focus of this investigation. For each replacement (0-15%), concrete cubes with a mix design ratio of 1:2:4 and a water cement ratio (W/C) of 0.5 were cast, and allowed to cure for 7, 14, 21, and 28 days. The flexural and split strengths of the resulting concrete were predicted; tests such as workability, specific gravity consistency, water absorption, and compressive strength in line with British Standard were conducted. The results showed that the aggregate particle sizes were well graded. True slumps exist in cast concrete. The specific gravities of waste paper ash (WPA) and cement are within the same range of 3.12 to 3.15 accordingly for 5 to 15% WPA.The specimen at 15% has the most water absorption (3.06%) whereas the specimen at 0% has the lowest (2.30%). In comparison to control (25.56 N/mm2 ), changed concrete (5-15%) had compressive strengths of 27.71 N/mm2 , 15.32 N/mm2 , and 26.82 N/mm2 at 28 days. In terms of strength loss, compressive strength followed the same pattern as flexural and split strength. It may be inferred that waste paper ash, when employed as a cement substitute within the experimental range, has qualities similar to those of regular Portland cement and also reduce the economic burden faced in providing housing for all. Keywords: Cement, Concrete, Waste paper ash, Replacement, and Strength 0150