従来型およびワンパート型ジオポリマーバインダーの強度特性に関する比較研究
Comparative Study of Strength Properties of Conventional and One-Part Geopolymer Binder (原題)
Renju C. M.
🤖 gxceed AI 要約
日本語
セメント産業は世界のCO2排出の約7%を占め、脱炭素化が急務である。本論文は、液体水酸化ナトリウムを使う従来のツーパート型ジオポリマーに対し、炭酸ナトリウム粉末を用いた安全性の高いワンパート型ジオポリマーを対象に、M30グレードでOPCコンクリートとのフレッシュ性状・硬化性状を比較した。さらに建物建設に必要な材料量から環境・社会影響も試算し、実用化の障壁低減と炭素削減の可能性を示す。
English
Cement production causes about 7% of global CO2 emissions. This paper compares fresh and hardened properties of M30-grade ordinary Portland cement concrete with one-part geopolymer concrete, which replaces hazardous liquid sodium hydroxide with sodium carbonate powder for safer mixing. It also estimates environmental and social impacts based on material quantities for building construction, highlighting geopolymer's potential to cut carbon footprints using fly ash and GGBS.
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
日本の建設業はScope 3排出のうち素材由来が大きく、SSBJや有報でのサプライチェーン排出開示が進む中、低炭素コンクリートの採用は調達・開示両面で実務的意義がある。ただし本論文は材料物性と環境影響の比較が中心で、日本の制度・政策への直接的な言及はない。
In the global GX context
As TCFD/ISSB and CSRD push companies to disclose embodied carbon in construction materials, low-carbon binders like one-part geopolymer offer a concrete lever for Scope 3 reduction. The paper adds empirical strength and impact data that can inform green building standards and procurement decisions, though it does not engage disclosure frameworks directly.
👥 読者別の含意
🔬研究者:ワンパート型ジオポリマーの強度・施工性データをOPCと比較した実証的知見を提供する。
🏢実務担当者:建設・調達担当は、水酸化ナトリウムの取扱リスクを避けつつ低炭素コンクリートを導入する選択肢として参考にできる。
🏛政策担当者:低炭素建設材料の普及には、安全性・強度基準の整備と公共調達でのインセンティブ設計が鍵となる。
📄 Abstract（原文）
The production of ordinary Portland cement (OPC) is a carbon-intensive process that generates significant amounts of carbon dioxide gas from the combustion of fossil fuels and the thermal decomposition of limestone. Overall, the cement industry is responsible for around 7% of global carbon dioxide emissions, which poses a considerable threat to the global climate due to its greenhouse effect. The recent advent of geopolymer shows great potential to reduce carbon footprints by utilising industrial by-products, such as fly ash and ground granulated blast-furnace slag (GGBS), and converting them into a binding material. Generally, geopolymer binders are made using alumina silicate compounds (fly ash and/or GGBS) and an alkali activator (combination of sodium silicate and sodium hydroxide solution) called "two-part geopolymer". Despite having superior engineering properties to conventional OPC concrete, geopolymer concrete has not been widely adopted in the concrete industry so far. The safety hazards in mixing and handling geopolymer concrete possessed by sodium hydroxide are one of the barriers to the adoption of geopolymer concrete. Replacing liquid sodium hydroxide with less hazardous alkali materials, such as sodium carbonate powder, makes the geopolymer binder less hazardous and easier to mix and handle than with liquid sodium hydroxide. Geopolymer binders made using alumina silicate compounds and alkali activator (combination of sodium silicate and sodium carbonate), all in powdered form, are called "one-part geopolymer". This paper investigates a comparison of fresh and hardened properties between OPC concrete and geopolymer concrete samples of M30 grade. Also compares the environmental and social impacts that may occur due to construction using ordinary concrete and geopolymer concrete, and their impacts by calculating the amount of ingredients required for the construction of the building.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.66000/2819-828x.2026.02.02first seen 2026-09-21 05:13:39
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