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Carbon Dioxide Sequestration Through Innovative Cementitious Construction Materials: Strategic Relevance in the Context of the 2026 Global Energy Crisis

革新的なセメント系建設材料による二酸化炭素隔離：2026年世界エネルギー危機の文脈における戦略的関連性 (AI 翻訳)

F. Pacheco‐Torgal

Preprints.orgプレプリント2026-04-20#CCUSOrigin: Global経営インパクト: コスト削減対象セクター: construction
DOI: 10.20944/preprints202604.0790.v2
原典: https://doi.org/10.20944/preprints202604.0790.v2

🤖 gxceed AI 要約

日本語

本論文は、CO2を固定しつつ省エネを実現する5種類のセメント系材料（促進炭酸化養生、ジオポリマー、再生セメント、バイオ炭複合材、酸化マグネシウムセメント）をレビューし、エネルギーコスト優位性、固定量、導入成熟度の観点から比較する。2026年のエネルギー危機により生産コストが上昇する中、これらの材料は経済性と脱炭素性を両立する戦略的価値を持つ。特に再生セメントとMgOセメントが有望で、ACCは既存インフラとの親和性から早期導入が可能と分析する。

English

This paper reviews five classes of cementitious materials that sequester CO2 and reduce energy use compared to OPC, assessing their strategic positioning on energy cost, sequestration scale, and deployment readiness. Amid the 2026 energy crisis, these materials offer dual benefits of cost competitiveness and decarbonization. Recycled cement and reactive MgO cement show the strongest strategic position, while ACC offers the clearest near-term deployment pathway.

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

日本では、建設分野の脱炭素化が急務であり、セメント産業のCO2排出削減は重要な課題。本論文の材料技術は、日本のゼロカーボン建築やインフラ整備に貢献し得る。また、SSBJ開示やサプライチェーン排出量算定において、建設資材の排出原単位の改善に寄与する可能性がある。

In the global GX context

Globally, the paper aligns with the EU EPBD and Taxonomy, highlighting the lack of embodied carbon disclosure requirements. It provides a strategic framework for investors and policymakers to promote low-carbon construction materials, relevant to ISSB and CSRD reporting as embodied carbon becomes a focus.

👥 読者別の含意

🔬研究者:Provides a comparative review of emerging cementitious materials for CO2 sequestration, useful for identifying research gaps and strategic directions.

🏢実務担当者:Offers insights into material selection for low-carbon construction, potentially aiding in meeting sustainability targets and reducing energy costs.

🏛政策担当者:Highlights regulatory gaps and the need for embodied carbon disclosure, informing policy development for sustainable construction.

📄 Abstract（原文）

Five classes of cementitious construction materials — accelerated carbonation curing (ACC) systems, geopolymers and alkali-activated materials (AAMs), recycled cement from construction and demolition waste, biochar-modified composites, and reactive magnesia cements — offer the dual capacity to sequester CO₂ while substantially reducing energy consumption relative to ordinary Portland cement (OPC). This paper provides an updated scientific review of each class, drawing on literature published through early 2026, and maps their comparative strategic positioning across three dimensions: energy cost advantage, potential sequestration scale, and current deployment readiness. The convergence of the 2026 Strait of Hormuz energy crisis — which has raised construction material production costs by up to 30% — with the accelerating trajectory of global warming creates an unprecedented economic and environmental imperative for this materials portfolio. Their lower energy intensity in production makes them simultaneously more cost-competitive and more aligned with decarbonisation goals precisely when these incentives are most powerful. The paper also examines systemic barriers to large-scale deployment and evaluates the regulatory landscape, focusing on the revised EU Energy Performance of Buildings Directive (EPBD 2024, EU 2024/1275), the EU Taxonomy Regulation, and the persistent absence of mandatory embodied carbon disclosure requirements for real estate investors. The analysis identifies recycled cement and reactive MgO cement as occupying the strongest strategic position when energy cost advantage and sequestration scale are considered jointly, while ACC offers the clearest near-term deployment pathway given its compatibility with existing industrial infrastructure.

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