Alkali-Activated Materials and CDW for the Development of Sustainable Building Materials: A Review with a Special Focus on Their Mechanical Properties
アルカリ活性材料と建設廃棄物を用いた持続可能な建築材料の開発：機械的特性に焦点を当てたレビュー (AI 翻訳)
L. Baldazzi, Andrea Saccani, S. Manzi
🤖 gxceed AI 要約
日本語
本レビューは、建設廃棄物（CDW）を原料とするアルカリ活性材料（AAM）の可能性を探る。CDWをAAMの前駆体や骨材として利用することで、廃棄物処理とセメント製造に伴うCO2排出の両課題を解決できる。しかし、分別コストや組成変動などの障壁が存在する。BIMや機械学習の活用により大規模リサイクルが現実的になりつつある。
English
This review explores the potential of using construction and demolition waste (CDW) as precursors or aggregates in alkali-activated materials (AAMs), offering a sustainable alternative to ordinary Portland cement. While CDW recycling faces challenges such as sorting costs and compositional variability, the application of BIM and machine learning models may enable large-scale reuse in the construction industry, promoting a circular economy.
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
日本では建設廃棄物の最終処分場不足が深刻であり、CDWの高度リサイクルは喫緊の課題。本レビューは、セメント代替によるCO2削減と廃棄物削減の両立可能性を示し、日本の建設業界における循環経済政策に示唆を与える。
In the global GX context
Globally, the construction sector seeks low-carbon alternatives to cement. This review demonstrates how CDW-based AAMs can reduce both waste and carbon emissions. It highlights the role of digital tools (BIM, ML) in overcoming scalability barriers, aligning with global circular economy and decarbonization strategies.
👥 読者別の含意
🔬研究者:Provides a comprehensive overview of CDW-based AAMs, summarizing key parameters and challenges for further research.
🏢実務担当者:Offers insights into using CDW as a sustainable material alternative, including potential cost and performance trade-offs.
🏛政策担当者:Supports policy development for CDW recycling and low-carbon building materials, emphasizing the need for sorting infrastructure and standards.
📄 Abstract（原文）
Alkali-activated materials (AAMs) or geopolymers have been considered for many years as a sustainable substitution for the traditional ordinary Portland cement (OPC) binder. However, their production needs energy consumption and creates carbon emissions. Since construction and demolition waste (CDW) can become precursors for manufacturing alkali-activated materials, their use as substitutes for traditional AAM (such as metakaolin, blast furnace slag, and fly ash) can solve both the problem of their disposal and the problem of sustainability. Furthermore, CDW can also be used as aggregate replacement, avoiding the exploitation of natural river sand and gravel. A new circular economy could be created based on CDW recycling, creating a new eco-friendly building practice. Unfortunately, this process is quite difficult owing to several variables that should be taken into consideration, such as the possibility of separating and sorting the CDW, the great variability of CDW composition, the cost of the mechanical and thermal treatment, the different parameters that compose an alkali-activated mix-design, and public opinion still being skeptical about the use of recycled materials in the construction sector. This review tries to describe all these aspects, summarizing the results of the most interesting studies performed on this subject. Today, thanks to a comprehensive protocol, the use of building information modeling (BIM) software and machine learning models, a large-scale reuse of CDW in the building industry appears more feasible.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.3390/buildings16020309first seen 2026-06-29 07:07:00
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