Structural lightweight concrete for seismic-resistant and sustainable construction: a state-of-the-art review of material innovations and performance evolution
耐震性と持続可能性を両立する構造用軽量コンクリート：材料革新と性能進化に関する最新レビュー (AI 翻訳)
Z. Akbulut, I. Merta, S. Guler, Arif Emre Dursun
🤖 gxceed AI 要約
日本語
本レビューは構造用軽量コンクリート(SLWC)の材料革新と持続可能性を包括的に検討。軽量骨材と混和材(メタカオリン、高炉スラグ、石灰石焼成粘土)の相乗効果により、従来コンクリート比でCO2排出量を15～40%削減可能。耐震性能も向上し、地震基部せん断力を20～30%低減できることを示す。
English
This review examines structural lightweight concrete (SLWC) innovations, showing that combining lightweight aggregates with SCMs (MK, GGBFS, LC3) reduces CO2 by 15-40% and seismic base shear by 20-30% compared to conventional concrete.
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
日本は地震多発国であり、建設分野の脱炭素が急務。本稿は軽量コンクリートによる耐震性向上とCO2削減の両立可能性を示し、建築基準法やGX政策への示唆を与える。
In the global GX context
Globally, the paper addresses embodied carbon reduction in the building sector, a key issue for TCFD/ISSB disclosures real estate and construction firms face. It offers a material solution for decarbonizing concrete infrastructure.
👥 読者別の含意
🔬研究者:Researchers can use this review to identify gaps in SLWC optimization for specific seismic regions and SCM combinations.
🏢実務担当者:Construction firms can leverage SLWC to reduce structural weight and embodied carbon, potentially improving ESG ratings and meeting green building certifications.
🏛政策担当者:Policymakers may consider incentivizing SLWC in building codes to enhance seismic resilience and achieve national decarbonization targets.
📄 Abstract（原文）
Structural lightweight concrete (SLWC) has gained increasing attention as a sustainable and earthquake-resilient construction material due to its optimal balance between reduced density and satisfactory mechanical performance. Compared with normal-weight concrete, SLWC generally achieves a 25–35 % reduction in density, typically 1,600–2000 kg/m 3 , while maintaining compressive strengths of approximately 17–60 MPa in well-designed systems. This reduction in self-weight leads to lower dead loads, enhanced structural efficiency, and a 20–30 % decrease in seismic base shear demand, thereby improving overall seismic performance. Recent developments highlight the synergistic use of lightweight aggregates with supplementary cementitious materials (SCMs), including metakaolin (MK), ground granulated blast-furnace slag (GGBFS), and limestone calcined clay (LC 3 ), commonly replacing 10–50 % of ordinary Portland cement. When combined with polymeric or natural fibers, these systems demonstrate improved strength development, durability, and post-cracking ductility, resulting in superior energy dissipation capacity under seismic loading. This review critically examines advances in SLWC by focusing on material innovations and microstructural characteristics and their influence on mechanical and seismic behavior. Sustainability performance is evaluated through embodied carbon and life cycle assessment (LCA) studies, reporting CO 2 emission reductions of approximately 15–40 % relative to conventional concrete.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1515/rams-2025-0236first seen 2026-06-29 06:58:07
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