Mobile QR Code QR CODE : Journal of the Korean Society of Civil Engineers
Title Analysis of the Mechanical Properties of High-Tension Performance Biochar Concrete Reinforced with PVA Fibers Based on Biochar Cement Replacement Ratio
Authors (Kim, Sangwoo) ; (Lee, Jihyeong) ; (Hong, Yeji) ; (Kim, Jinsup)
DOI https://doi.org/10.12652/Ksce.2024.44.5.0603
Page pp.603-613
ISSN 10156348
Keywords Polyvinyl alcohol fiber; Biochar; Concrete; Mechanical properties
Abstract This study evaluated the mechanical properties of high-tension performance biochar concrete, focusing on the effects of varying biochar cement replacement ratios (0 %, 1 %, 2 %, 3 %, 4 %, and 5 %). Mechanical properties, including compressive strength, tensile strength, and flexural strength, were tested. The results showed a general decrease in compressive strength with increasing biochar replacement, with significant reductions at 1 % to 3 % levels. PVA fiber reinforcement improved long-term compressive strength, particularly at higher biochar levels. Tensile and flexural strength also showed initial reductions with low biochar levels but improved at higher replacement levels. PVA fibers consistently enhanced tensile and flexural strength. SEM images confirmed the integration of biochar and PVA fibers into the cement matrix, enhancing microstructural density and crack resistance.