人工補助セメント質材料としてのトウモロコシ殻灰：レビュー
Corn Husk Ash as an Artificial Supplementary Cementitious Material: A Review (原題)
C. Ezenkwa, A. Mahamat
🤖 gxceed AI 要約
日本語
トウモロコシ殻灰（CHA）を補助セメント質材料（SCM）として評価したレビュー。CHAは比表面積が大きく、0〜20wt%置換で56日養生後にモルタル・コンクリートの力学特性を向上させるが、ワーカビリティは低下する。土壌安定化では20wt%添加で吸水係数が大幅に低下し圧縮強度・耐摩耗性が向上。今後はエンボディドカーボン評価により気候責任を負えるか検証すべきと提言する。
English
A review of corn husk ash (CHA) as an agro-waste supplementary cementitious material. CHA (high BET surface area) improves mortar/concrete mechanical properties at 0–20 wt% replacement after 56 days, though workability declines. In soil stabilisation, 20 wt% CHA cuts water absorption sharply while raising compressive strength and abrasion resistance. The authors call for embodied-carbon assessment to test whether CHA can bear climate responsibility, not just load.
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
建設業のScope 3・エンボディドカーボン削減はSSBJ開示でも重要論点。廃棄物由来SCMの実用性評価は、日本企業の建材調達・サプライチェーン脱炭素の参考になる。
In the global GX context
Embodied carbon in construction materials is a growing focus under ISSB/CSRD Scope 3 and building-sector transition finance. This review adds evidence on agro-waste SCMs as a low-carbon material lever, though it stops short of quantified carbon accounting.
👥 読者別の含意
🔬研究者:農業廃棄物SCMの物性・性能データを整理した出発点として有用。
🏢実務担当者:建材調達でバイオマス由来SCMの性能・限界（ワーカビリティ低下）を把握できる。
🏛政策担当者:建設脱炭素の材料代替策として、エンボディドカーボン評価基準整備の必要性を示す。
📄 Abstract（原文）
The construction industry’s heavy reliance on traditional cement highlights the need for sustainable supplementary cementitious materials (SCMs). This review synthesises current research on corn husk ash (CHA) an agro-based waste, evaluating its physical, chemical, microstructural, and performance characteristics in mortar, concrete, and soil stabilisation based on relevant standards. Despite the abundance of corn husks, research on CHA as an SCM remains limited. Synthesis of peer-reviewed data indicates that CHA has an average specific gravity of 2.24, a pore volume of 0.08 cc/g, and a Brunauer–Emmett–Teller (BET) surface area of 365.46 m2/g. Key findings indicate that CHA enhances mechanical properties of mortar and concrete at replacement levels of 0–20 wt.% after 56 days of curing. However, the review highlighted an important challenge: workability reduces as replacement level increases, which could be attributed to the high surface area of CHA. Regarding soil stabilisation, the total water absorbed by soil blocks gradually decreased as the CHA content increased, with soil blocks containing 20 wt.% CHA having the lowest water absorption coefficient, 2.65 g/(cm2.min0.5), compared to the reference (46.35 g/(cm2.min0.5) while attaining the highest compressive strength—5.311 MPa—and abrasion resistance—1.823 cm2/g—compared to the reference (4.177 MPa; 0.407 cm2/g). In line with the Environmental Protection Agency (EPA) and United Nations sustainability goals, this review paper proposes that the environmental impact of using CHA via embodied carbon be assessed to determine whether CHA can only carry load or also bear climate responsibility.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.3390/infrastructures11110398first seen 2026-11-06 05:40:17
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