ピーナッツ殻灰とスラグを用いた二元固形廃棄物ジオポリマーモルタルの基本性能と乾燥収縮特性に関する研究
Study on Basic Performance and Drying Shrinkage Characteristics of Binary Solid Waste Geopolymer Mortar Prepared with Peanut Husk Ash and Slag (原題)
(著者不明)
🤖 gxceed AI 要約
日本語
セメント代替のジオポリマーモルタルにおいて、農業副産物であるピーナッツ殻灰（PHA）をGGBFSと天然砂の双方に部分代替する新規グリーン建材を検討した。17配合の実験により、総置換率20%で28日圧縮強度が21.7%向上し、90日乾燥収縮が31.2%低減、施工性も確保された。PHAのポゾラン反応と微細骨材充填効果が細孔構造を改善することが示された。
English
This study develops a green geopolymer mortar using peanut husk ash (PHA) as a dual replacement for GGBFS and natural sand. Across 17 mixtures, a 20% total replacement raised 28-day compressive strength by 21.7% and cut 90-day drying shrinkage by 31.2% while meeting workability requirements. Microstructural analysis attributes gains to PHA's pozzolanic reaction and micro-aggregate filling improving pore structure.
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
建設分野の脱炭素はScope 3（カテゴリ1・3）やグリーン建材調達の観点で日本企業の開示課題と直結する。廃棄物由来材料の活用はサーキュラーエコノミー指標や統合報告書の環境KPI候補になり得るが、本論文自体は政策・開示制度に直接言及しない。
In the global GX context
Decarbonizing construction materials feeds directly into Scope 3 accounting and green procurement criteria under TCFD/ISSB and CSRD. This paper offers a low-carbon cement alternative pathway, though it does not engage disclosure frameworks or policy instruments directly.
👥 読者別の含意
🔬研究者:廃棄物由来ポゾラン材料の力学・収縮特性と微細構造メカニズムの実証データを提供する。
🏢実務担当者:低炭素建材の調達候補として、農業副産物活用による強度・収縮バランスの設計指針を得られる。
🏛政策担当者:建設脱炭素・廃棄物有効利用政策の材料レベル根拠として参考になるが、規制示唆は限定的。
📄 Abstract（原文）
Geopolymer mortar (GM) is a sustainable alternative to cement with a low carbon footprint and excellent mechanical performance. However, its reliance on ground granulated blast-furnace slag (GGBFS) and natural sand, along with significant drying shrinkage, limits its sustainability and durability. In this study, peanut husk ash (PHA), an agricultural by-product, was utilized as a dual replacement material to partially replace GGBFS and natural sand in GM, thereby developing a novel green building mortar. A total of 17 mortar mixtures, prepared by employing PHA as a dual replacement material to partially replace GGBFS (0%–15% by weight) and natural sand (0%–30% by weight), respectively, were systematically investigated for properties including fresh state behavior, mechanical strength, drying shrinkage, and microstructure versus cement mortar (CM). The experimental results show that the volcanic ash effect and the microaggregate filling effect of PHA work synergistically to enhance the matrix performance. Compared with the reference group, when the total replacement rate was 20% by weight, the 28-day compressive strength of mortar increased by 21.7%, the 90-day drying shrinkage reduced by 31.2%, and the working performance met the construction requirements. Microstructural analysis reveals that highly active SiO 2 in PHA reacts with Ca ( OH ) 2 generated by GGBFS hydration to form gels, which improves the pore structure. This study offers new insights into using agricultural wastes efficiently in geopolymers, providing theoretical and engineering support for sustainable building materials.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1061/jmcee7.mteng-24261first seen 2026-09-12 05:42:55 · last seen 2026-09-21 05:13:41
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