Abstract: After use, paper often becomes waste, contributing to environmental issues through incineration or littering. This study explores the potential use of discarded paper as a partial substitute for cement, ranging from 0% to 15% in 5% increments. Concrete cubes were prepared for each substitution level following a mix design ratio of 1:2:4 and a water-cement ratio of 0.5, undergoing curing for 7, 14, 21, and 28 days. Assessment included predictive tests for strengths, workability, consistency, water absorption, and compressive strength, adhering to British Standard specifications and mathematical models. Results showed a well-graded aggregate size distribution and true slumps in fresh concrete. Waste paper ash (WPA) and cement had specific gravities of 3.13 each, with mixtures ranging from 3.12 to 3.15 for WPA content from 5% to 15%. Notably, 15% WPA exhibited the highest water absorption (3.06%), while 0% had the lowest (2.30%). Compressive strengths at 28 days for altered concrete (5-15% WPA) ranged from 15.32 N/mm² to 27.71 N/mm² compared to 25.56 N/mm² for the control. Strength loss followed a similar trend across compressive, flexural, and split strengths. The modulus of elasticity ranged from 25 to 29.58 GPa, with Poisson’s ratio from 0.31 to 0.41. These findings suggest that within the experimental context, waste paper ash demonstrates properties akin to conventional Portland cement when substituted.
Keywords: cement, concrete, waste paper ash, recyclable, replacement.
Title: Structural Use of Low Dosage Waste Paper Ash In concrete
Author: Adeala Adeniran Jolaade, Olaoye Joseph Oladapo
International Journal of Civil and Structural Engineering Research
ISSN 2348-7607 (Online)
Vol. 12, Issue 1, April 2024 - September 2024
Page No: 53-62
Research Publish Journals
Website: www.researchpublish.com
Published Date: 11-June-2024
