Study the Effects of Using Jute Fiber and fly ash as Partial Replacement of Cement in m25 Grade Concrete Properties

Abstract

Because regular concrete uses a lot of cement and emits a lot of CO2, it has an adverse effect on the environment. This makes it necessary to look into sustainable alternatives. This study looks into improving the mechanical qualities of M25 grade concrete while lessening its environmental impact by partially replacing cement with fly ash and jute fiber. Jute fibers and fly ash, a pozzolanic byproduct of burning coal, were added in different amounts to test the strength, durability, and microstructural qualities of the finished concrete. The mechanical properties of concrete mixtures with different fly ash and jute fiber ratios were the subject of experimental study. The best mixture, which included 5g of jute fiber and 30% fly ash, outperformed regular concrete by achieving the highest compressive strength at 28 days (34.28 MPa). The identical combination captured the most elevated tensile strength (4.32 MPa) and flexural strength (5.35 MPa) after 28 days. The maximum compressive strengths of the concrete with 15% fly ash and 7.5g of jute fiber were 28.86 MPa and 22.20 MPaat 14 and 7 days, respectively. The tensile strength of the concrete showed continuous improvements, reaching its peak at 28 days (3.82 MPa). Tests for resistance to sulfate attack and chloride permeability further validated the modified mixes' enhanced performance. According to the study's findings, the ideal mixture of 70% cement, 30% fly ash, and 5g jute fiber significantly improves compressive, flexural, and tensile strength, offering a viable substitute for the manufacturing of concrete in a sustainable manner.