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<p>Throughout the industrial revolution, infrastructure has grown to unprecedented levels, driven mostly by the increasing difficulty of extracting raw materials from the earth’s crust. Concerns among industrialists and environmentalists about finding alternatives to iron-based rebar material have been growing over the past few years. Hence, the current study is to examine the feasibility of constructing concrete beam structures with an eco-friendly rebar composite that incorporates microfibre reinforced vinyl ester and porous biochar derived from corn husks. The novelty of the researchlies in the surface modification procedure was applied to both the fiber and the filler in order to create a stronger composite rebar. The performance of the manufactured composite rebar is evaluated according to ASTM standards using tests like mechanical, thermal conductivity, and water absorption. Concrete beam constructions are analyzed using flexural bending load tests. Researchers found that composite rebar D4, which is 40% corn husk fiber and 2% porous biochar, had a thermal conductivity of 0.42&#xa0;W/mK, a compression strength of 86&#xa0;MPa, a flexural strength of 108&#xa0;MPa, and a maximum tensile strength of 66&#xa0;MPa. Adding 4 wt% biochar and 40 wt% corn husk fiber to composite rebar E5 reduces its mechanical and thermal conductivity properties but increases hardness and water absorption. Among the composites, rebar D4 exhibits the best overall performance, and concrete beams reinforced with D4 show superior structural behaviour under bending compared to those reinforced with E5.This research indicates that composite rebar-based concrete beams have superior strength properties, making them a good choice for places that need to withstand large loads and are resistant to heat and humidity.</p>

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Development and characterization of rice husk biochar and corn husk fiber reinforced vinyl ester rebar for sustainable construction

  • 期刊论文

  • 发表日期：

    2026年2月28日

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  • M. K. Muniyasamy,
  • Basanth Babu K. Mohanram,
  • K. Ramesh,
  • N. Devendran

摘要

Throughout the industrial revolution, infrastructure has grown to unprecedented levels, driven mostly by the increasing difficulty of extracting raw materials from the earth’s crust. Concerns among industrialists and environmentalists about finding alternatives to iron-based rebar material have been growing over the past few years. Hence, the current study is to examine the feasibility of constructing concrete beam structures with an eco-friendly rebar composite that incorporates microfibre reinforced vinyl ester and porous biochar derived from corn husks. The novelty of the researchlies in the surface modification procedure was applied to both the fiber and the filler in order to create a stronger composite rebar. The performance of the manufactured composite rebar is evaluated according to ASTM standards using tests like mechanical, thermal conductivity, and water absorption. Concrete beam constructions are analyzed using flexural bending load tests. Researchers found that composite rebar D4, which is 40% corn husk fiber and 2% porous biochar, had a thermal conductivity of 0.42 W/mK, a compression strength of 86 MPa, a flexural strength of 108 MPa, and a maximum tensile strength of 66 MPa. Adding 4 wt% biochar and 40 wt% corn husk fiber to composite rebar E5 reduces its mechanical and thermal conductivity properties but increases hardness and water absorption. Among the composites, rebar D4 exhibits the best overall performance, and concrete beams reinforced with D4 show superior structural behaviour under bending compared to those reinforced with E5.This research indicates that composite rebar-based concrete beams have superior strength properties, making them a good choice for places that need to withstand large loads and are resistant to heat and humidity.