Mechanical Behavior and Formation Mechanisms of Hyphae-Based Lightweight Geomaterials
文献类型：期刊论文
| 作者 | Gou, Leyu4,5; Zhang, Xianwei5; Li, Sa3; Liu, Xizhou1,2; Wang, Derong1,2 |
| 刊名 | JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
 |
| 出版日期 | 2025-06-01 |
| 卷号 | 151期号:6页码:16 |
| 关键词 | Geosynthetics Bio geotechnics Stiffness Microstructure Mechanisms |
| ISSN号 | 1090-0241 |
| DOI | 10.1061/JGGEFK.GTENG-13113 |
| 英文摘要 | As the main by-product of wheat, wheat bran is mostly used as animal feed or incinerated, which adversely affects the environment. Mycelium-based biocomposites, which are mixtures of agricultural by-products (e.g., wheat bran) and fungi, minimize wheat bran wastage and have attracted attention as building materials owing to their high strength, low density, and environmental friendliness. Nonetheless, the practical application of mycelium-based materials in geotechnical engineering remains rudimentary. Building on mycelium-based biocomposites, this study develops lightweight sand-mycelium soil (LSMS), consisting of soil, substrate materials (wheat bran), and hyphae (P. ostreatus), as an eco-friendly lightweight backfill material in geotechnical engineering. The impact of substrate material content, effective confining pressures, and hyphae on the mechanical properties of P. ostreatus-based LSMS was studied. In addition, a detailed investigation of the formation mechanisms of P. ostreatus-based LSMS was conducted. The results indicated that increased substrate material content reduces the strength but increases the ductility of P. ostreatus-based LSMS. The presence of hyphae alters the structure of P. ostreatus-based LSMS, reducing volumetric contraction and improving strength, although this depends on confining pressure. The formation of P. ostreatus-based LSMS involves biophysical mechanisms (hyphal network bundling and filling of void spaces) and biochemical mechanisms (self-bonding, secretion bonding, and aragonite deposition). Biochemical mechanisms may provide a more prolonged effect on the stability of P. ostreatus-based LSMS compared to biophysical mechanisms. P. ostreatus LSMS shows great potential as an eco-friendly alternative to conventional lightweight backfill materials in geotechnical engineering. |
| 资助项目 | General Program of the National Natural Science Foundation of China[42372313] ; General Program of the National Natural Science Foundation of China[42072294] ; Postdoctoral Fellowship Program of CPSF[GZC20241888] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001470996200018 |
| 出版者 | ASCE-AMER SOC CIVIL ENGINEERS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35727]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Li, Sa |
| 作者单位 | 1.Tianjin Normal Univ, Coll Life Sci, Tianjin 300387, Peoples R China 2.Tianjin Key Lab Conservat & Utilizat Anim Divers, Tianjin 300387, Peoples R China 3.Tianjin Univ, Inst Geotech Engn, Dept Civil Engn, 135 Yaguan Rd, Tianjin 300354, Peoples R China 4.Tianjin Univ, State Key Lab Hydraul Engn Simulat & Safety, Tianjin 300354, Peoples R China 5.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gou, Leyu,Zhang, Xianwei,Li, Sa,et al. Mechanical Behavior and Formation Mechanisms of Hyphae-Based Lightweight Geomaterials[J]. JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING,2025,151(6):16. |
| APA | Gou, Leyu,Zhang, Xianwei,Li, Sa,Liu, Xizhou,&Wang, Derong.(2025).Mechanical Behavior and Formation Mechanisms of Hyphae-Based Lightweight Geomaterials.JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING,151(6),16. |
| MLA | Gou, Leyu,et al."Mechanical Behavior and Formation Mechanisms of Hyphae-Based Lightweight Geomaterials".JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING 151.6(2025):16. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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