Radha Palpi Boruah, Berlin Mohanadhas, Jayakesh Kamalanathan
{"title":"枯草芽孢杆菌、香根草纤维和竹纤维对差级配土抗剪强度的比较研究","authors":"Radha Palpi Boruah, Berlin Mohanadhas, Jayakesh Kamalanathan","doi":"10.1016/j.bamboo.2025.100146","DOIUrl":null,"url":null,"abstract":"<div><div>Biological soil improvement utilizing chemical and biological processes provides a potentially sustainable solution for enhancing soil stability. This study evaluates the impact of <em>Bacillus subtilis</em>, vetiver fibre and bamboo fibre on the shear strength of poorly graded sandy silt soil. Direct shear tests were conducted under normal stresses to analyze the mechanical performance of the treated soil. The shear strength of untreated soil (13 <em>kPa</em>) significantly improved with treatments. Incorporating <em>Bacillus subtilis</em> and a cementation solution enhanced cohesion. The addition of vetiver fibre further increased cohesion, while bamboo fibre delivered superior results, achieving a shear strength of 42.8 <em>kPa</em>. The synergy between the bamboo fibre and the microbial treatment facilitated a 3.3-fold improvement in cohesion over untreated soil, attributed to calcite precipitation and enhanced interparticle bonding. These findings highlight the potential of combining natural fibres with microbial treatments for sustainable soil stabilization.</div></div>","PeriodicalId":100040,"journal":{"name":"Advances in Bamboo Science","volume":"11 ","pages":"Article 100146"},"PeriodicalIF":0.0000,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A comparative study of the shear strength of a poorly graded soil using Bacillus subtilis, vetiver fibre and bamboo fibre\",\"authors\":\"Radha Palpi Boruah, Berlin Mohanadhas, Jayakesh Kamalanathan\",\"doi\":\"10.1016/j.bamboo.2025.100146\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Biological soil improvement utilizing chemical and biological processes provides a potentially sustainable solution for enhancing soil stability. This study evaluates the impact of <em>Bacillus subtilis</em>, vetiver fibre and bamboo fibre on the shear strength of poorly graded sandy silt soil. Direct shear tests were conducted under normal stresses to analyze the mechanical performance of the treated soil. The shear strength of untreated soil (13 <em>kPa</em>) significantly improved with treatments. Incorporating <em>Bacillus subtilis</em> and a cementation solution enhanced cohesion. The addition of vetiver fibre further increased cohesion, while bamboo fibre delivered superior results, achieving a shear strength of 42.8 <em>kPa</em>. The synergy between the bamboo fibre and the microbial treatment facilitated a 3.3-fold improvement in cohesion over untreated soil, attributed to calcite precipitation and enhanced interparticle bonding. These findings highlight the potential of combining natural fibres with microbial treatments for sustainable soil stabilization.</div></div>\",\"PeriodicalId\":100040,\"journal\":{\"name\":\"Advances in Bamboo Science\",\"volume\":\"11 \",\"pages\":\"Article 100146\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2025-03-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advances in Bamboo Science\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2773139125000254\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advances in Bamboo Science","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2773139125000254","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A comparative study of the shear strength of a poorly graded soil using Bacillus subtilis, vetiver fibre and bamboo fibre
Biological soil improvement utilizing chemical and biological processes provides a potentially sustainable solution for enhancing soil stability. This study evaluates the impact of Bacillus subtilis, vetiver fibre and bamboo fibre on the shear strength of poorly graded sandy silt soil. Direct shear tests were conducted under normal stresses to analyze the mechanical performance of the treated soil. The shear strength of untreated soil (13 kPa) significantly improved with treatments. Incorporating Bacillus subtilis and a cementation solution enhanced cohesion. The addition of vetiver fibre further increased cohesion, while bamboo fibre delivered superior results, achieving a shear strength of 42.8 kPa. The synergy between the bamboo fibre and the microbial treatment facilitated a 3.3-fold improvement in cohesion over untreated soil, attributed to calcite precipitation and enhanced interparticle bonding. These findings highlight the potential of combining natural fibres with microbial treatments for sustainable soil stabilization.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
