Bioaerated Low-Density Composites from Industrial Byproducts: Advancing Carbon-Neutral and Energy-Efficient Material Systems in the Building Sector

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

🔬研究者:Materials scientists studying bio-based aerated concrete and pore structure optimization can build on these findings.

🏢実務担当者:Construction firms and material suppliers may explore these composites for low-carbon building products, though further development is needed.

🏛政策担当者:Policymakers supporting circular economy and energy efficiency in buildings can consider these materials as part of green building incentives.

カーボンニュートラルな建設材料への移行には、埋蔵エネルギーの低減、耐久性の向上、建物のエネルギー効率の改善を組み合わせた革新的なソリューションが必要である。本研究では、産業副産物を組み込んだ生物学的駆動の曝気プロセスを通じて開発された、2つの新規な生物曝気低密度複合材料—BAACおよびBIOAERMAC—を調査し比較する。BAACは、Saccharomyces cerevisiaeと過酸化水素を用いて製造され、従来のアルミニウム粉末を置き換え、安全性を向上させるとともに、廃棄物由来の酵母の価値化を可能にする。BIOAERMACは、合成無水石膏、微生物、過酸化物、および使用済みタイヤ由来の再生ゴムを組み込んだ石膏ベースの複合材料である。これらの材料は、湿熱挙動と寸法安定性の観点から特性評価され、同等の機械的強度条件下で市販のオートクレーブ養生気泡コンクリートと比較された。結果は、水分輸送と収縮における有意な差異を浮き彫りにし、これらは主に細孔構造と連結性によって支配される。BAACは従来のAACに匹敵する挙動を示すのに対し、BIOAERMACは毛管吸収および吸湿吸収の低減を示し、細孔の連結性が限定的であることを示唆するが、乾燥収縮はより大きい。これらの知見は、細孔構造の調整と、水分輸送、耐久性、および寸法安定性の間のトレードオフの制御における生物曝気の有効性を実証し、低炭素かつエネルギー効率の高い建築用途における生物曝気複合材料の可能性を強調する。

AI 翻訳（deepseek-v4-flash）。 正確を期す場合は下の原文を参照してください。

The transition towards carbon-neutral construction materials requires innovative solutions that combine reduced embodied energy, enhanced durability and improved building energy efficiency. This study investigates and compares two novel bioaerated low-density composites—BAAC and BIOAERMAC—developed through biologically driven aeration processes incorporating industrial byproducts. BAAC is produced using Saccharomyces cerevisiae and hydrogen peroxide, replacing conventional aluminum powder and improving safety while enabling the valorization of waste-derived yeast. BIOAERMAC is a gypsum-based composite incorporating synthetic anhydrite, microorganisms, peroxides, and recycled rubber from end-of-life tires. The materials were characterized in terms of hygrothermal behavior and dimensional stability, and compared with commercial autoclaved aerated concrete under equivalent mechanical strength conditions. The results highlight significant differences in moisture transport and shrinkage, primarily governed by pore structure and connectivity. BAAC exhibits behavior comparable to conventional AAC, whereas BIOAERMAC shows reduced capillary and hygroscopic absorption, indicating limited pore connectivity, but higher drying shrinkage. These findings demonstrate the effectiveness of bioaeration in tailoring pore structure and controlling the trade-off between moisture transport, durability, and dimensional stability, highlighting the potential of bioaerated composites for low-carbon and energy-efficient building applications.

• openalex https://doi.org/10.3390/ma19132722first seen 2026-06-27 04:52:31
• semanticscholar https://doi.org/10.3390/ma19132722first seen 2026-06-29 06:36:21 · last seen 2026-08-09 05:49:38