コンクリート構造要素の体化炭素削減のためのFRP鉄筋と鋼鉄筋の炭素効率比較
Carbon Efficiency Comparison of FRP and Steel Bars for Reducing the Embodied Carbon of Concrete Structural Elements (原題)
Shizhe Hong, John Orr, Arnaud Delaplace
🤖 gxceed AI 要約
日本語
本論文は、コンクリート構造要素の体化炭素（ゆりかごから門まで）を削減するためのFRP鉄筋と鋼鉄筋の炭素効率を比較する多段階フレームワークを提案する。材料、断面、部材レベルでの比較により、最適な鉄筋タイプの選択を支援する。例として、非プリズマティックBFRP鉄筋スラブは鋼鉄筋スラブより4.8%～14.4%低いCO2排出を示し、従来のプリズマティック鋼鉄筋スラブと比較して最大63%のCO2削減が可能である。
English
This paper proposes a multi-level framework to compare the carbon efficiency of FRP bars versus steel bars for reducing embodied carbon in concrete structural elements. The framework supports decision-making at material, section, and element levels. In examples, non-prismatic BFRP-reinforced slabs show 4.8%-14.4% lower CO2 than steel-reinforced slabs and up to 63% savings compared to traditional prismatic steel-reinforced slabs.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本の建設業界では、カーボンニュートラル達成に向けて建材の体化炭素削減が重要であり、本フレームワークは材料選択の意思決定に有用。SSBJ開示やサプライチェーン排出量算定にも関連する。
In the global GX context
Globally, embodied carbon reduction in construction is critical for climate targets. This framework provides a rigorous methodology for comparing rebar types, applicable to various projects, supporting low-carbon material selection and disclosure.
👥 読者別の含意
🔬研究者:Provides a comparative framework for embodied carbon assessment of construction materials.
🏢実務担当者:Useful for selecting low-carbon rebar types in structural design to reduce embodied carbon.
🏛政策担当者:Informs policies promoting low-carbon construction materials and embodied carbon regulations.
📄 Abstract（原文）
In recent years, FRP (Fibre-Reinforced Polymer) bars have been considered to be a promising alternative to conventional steel bars for reducing the CO2 emissions of concrete structural elements, whilst their environmental performance compared to traditional steel bars requires quantitative assessment. This paper introduces a multi-level comparative framework to evaluate the carbon efficiency of FRP bars compared to steel bars, from the material level to the section level and structural element levels, leading to quantitative comparative outcomes useful for decision-making when selecting the most carbon-efficient rebar type for achieving the lowest embodied carbon (cradle-to-gate) of structural elements. Each comparison level has its applicability depending on the specific context of construction projects. Because relative environmental performance can vary significantly in function of material and environmental data, the developed comparative framework aims to provide the rigorous methodology to follow, which can be adapted to any construction project by updating material and environmental datasets, rather than declaring a universally superior rebar type. Steel and BFRP (basalt FRP) bars are compared, based on the assumed material and environmental data, as an example to demonstrate how to apply the proposed comparative formwork. Results indicate that the optimal solution depends mainly on the structural parameters (such as span and slab thickness) as well as the assumed carbon data. For prismatic elements, the optimal choice between steel and BFRP bar is strongly influenced by the selection of slab thickness. For non-prismatic elements, it is found that non-prismatic BFRP-reinforced slabs have 4.8%–14.4% lower CO2 than non-prismatic steel-reinforced slabs and can save up to 63% of CO2 compared to the traditional solution (prismatic steel-reinforced slabs) in the presented examples.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.31224/8136first seen 2026-09-04 05:05:41
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