Mechanical Properties of Fine-Grained Soils Treated with Fungal Mycelium of Trichoderma virens
文献类型：期刊论文
| 作者 | Park, Joon Soo4; Lin, Hai3; Chen, Emily2; Alqrinawi, Hussein3; Dong, Yi1; Moe, William M.3 |
| 刊名 | JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
 |
| 出版日期 | 2025-05-01 |
| 卷号 | 151期号:5页码:14 |
| ISSN号 | 1090-0241 |
| DOI | 10.1061/JGGEFK.GTENG-12745 |
| 英文摘要 | Recent investigations into bio-mediated soil improvement have identified fungal mycelium as a promising candidate for innovative applications in geotechnical engineering. Fungal mycelia can increase soil water repellency, reduce hydraulic conductivity and increase matric suction by reducing pore size, and cement and bind soil particles together through biomineralization and extracellular polymeric substance (EPS). Previous studies, however, focused primarily on the effects of fungal mycelia on sandy soils. This study investigated the effects of the filamentous fungus Trichoderma virens (ATCC 9645) on mechanical properties of fine-grained soils. Three types of fine-grained soils were used in this study, including Baton Rouge (BR) silt, silica silt, and kaolinite. Unconfined compression, drying cake (DC), and Brazilian tensile strength (BTS) tests were conducted under different moisture contents to measure unconfined compressive strength (UCS), Young's modulus, soil shrinkage curve, suction stress characteristic curve (SSCC), and tensile strength of untreated, potato dextrose broth (PDB)-treated, and fungal-treated specimens (PDB suspended with fungal mycelia). The results showed T. virens fungal mycelia increased the mean UCS and BTS of BR and silica silts at oven-dry condition by about 100% and 64%, respectively. T. virens fungal mycelia resulted in negligible improvement in the UCS of kaolinite, likely due to the constrained pore size that restricted fungal growth. The increases of UCS and BTS in BR and silica silts were attributed to the increase of suction stress magnitude (i.e., increase of attractive interparticle stress), resulting from the increased capillary and physicochemical forces by fungal mycelia. |
| 资助项目 | Louisiana Board of Regents Research Competitiveness Subprogram[039A-19] ; National Science Foundation[2339618] |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001447608800010 |
| 出版者 | ASCE-AMER SOC CIVIL ENGINEERS |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/36558]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Lin, Hai |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 2.Baton Rouge Magnet High Sch, 2825,Govt St, Baton Rouge, LA 70806 USA 3.Louisiana State Univ, Dept Civil Engn & Environm Engn, 3255 Patrick F Taylor Hall, Baton Rouge, LA 70803 USA 4.GeoEngineers Inc, 17425 NE Union Hill Rd250, Redmond, WA 98052 USA |
| 推荐引用方式 GB/T 7714 | Park, Joon Soo,Lin, Hai,Chen, Emily,et al. Mechanical Properties of Fine-Grained Soils Treated with Fungal Mycelium of Trichoderma virens[J]. JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING,2025,151(5):14. |
| APA | Park, Joon Soo,Lin, Hai,Chen, Emily,Alqrinawi, Hussein,Dong, Yi,&Moe, William M..(2025).Mechanical Properties of Fine-Grained Soils Treated with Fungal Mycelium of Trichoderma virens.JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING,151(5),14. |
| MLA | Park, Joon Soo,et al."Mechanical Properties of Fine-Grained Soils Treated with Fungal Mycelium of Trichoderma virens".JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING 151.5(2025):14. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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