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<p>This study looks into the mechanical characteristics and environmental advantages of rebar composed of polyester resin, chopped flax fiber, and bagasse biochar. The main theme of the research is to create a lightweight, environmentally friendly substitute for conventional steel rebar by fusing these sustainable materials.According to the study’s conclusions, the composite specimen N2 with 1% biochar has the best mechanical properties and is hence a good choice for use in rebar applications. Specifically, specimen N2, performed better than specimen N0which was composed entirely of polyester resin in terms of compressive strength (76.12&#xa0;MPa), flexural strength (100.48&#xa0;MPa), and tensile strength (59.24&#xa0;MPa). The increases shown in these values are 33.57%, 39.57%, and 33.35%. The increased mechanical properties can be attributed to the biochar’s strength, stability, and durability as well as the addition of flax fiber. In contrast, N4 that had 5 vol% biochar had the highest hardness value of 82.68 shore-D, which was 19.67% higher than sample N. With a 124.90% increase in thermal conductivity, specimen N4 has the greatest thermal conductivity value of 0.578&#xa0;W/m K. Additionally, the composite specimen N4 shows the lowest flammability (7.12&#xa0;mm/min) and water absorption percentage (0.001%), indicating the low flammability and decreased corrosion of the biochar.According to the research, this novel composite rebar has the potential to significantly advance the use of renewable resources in the construction sector and support sustainable building practices.</p>

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Load Bearing Characterization of Environment Friendly Polyester Composite Rebar with Chopped Flax Fiber and Bagasse Biochar

  • 期刊论文

  • 发表日期：

    2025年6月14日

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  • M. Joni,
  • T. Kavitha,
  • A. Arun Kumar

摘要

This study looks into the mechanical characteristics and environmental advantages of rebar composed of polyester resin, chopped flax fiber, and bagasse biochar. The main theme of the research is to create a lightweight, environmentally friendly substitute for conventional steel rebar by fusing these sustainable materials.According to the study’s conclusions, the composite specimen N2 with 1% biochar has the best mechanical properties and is hence a good choice for use in rebar applications. Specifically, specimen N2, performed better than specimen N0which was composed entirely of polyester resin in terms of compressive strength (76.12 MPa), flexural strength (100.48 MPa), and tensile strength (59.24 MPa). The increases shown in these values are 33.57%, 39.57%, and 33.35%. The increased mechanical properties can be attributed to the biochar’s strength, stability, and durability as well as the addition of flax fiber. In contrast, N4 that had 5 vol% biochar had the highest hardness value of 82.68 shore-D, which was 19.67% higher than sample N. With a 124.90% increase in thermal conductivity, specimen N4 has the greatest thermal conductivity value of 0.578 W/m K. Additionally, the composite specimen N4 shows the lowest flammability (7.12 mm/min) and water absorption percentage (0.001%), indicating the low flammability and decreased corrosion of the biochar.According to the research, this novel composite rebar has the potential to significantly advance the use of renewable resources in the construction sector and support sustainable building practices.