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| 淤泥EPS颗粒混合轻质土抗剪强度的影响因素 | |
| 引用本文： | 朱伟,李明东,汤峻,张春雷.淤泥EPS颗粒混合轻质土抗剪强度的影响因素[J].公路,2007(2):7-10. |
| 作者姓名： | 朱伟 李明东 汤峻 张春雷 |
| 作者单位： | 1. 河海大学水文水资源与水利工程科学国家重点实验室,南京市,210098;河海大学环境科学与工程学院,南京市,210098 2. 河海大学岩土工程研究所,南京市,210098 3. 河海大学水文水资源与水利工程科学国家重点实验室,南京市,210098;河海大学岩土工程研究所,南京市,210098 |
| 基金项目： | 河海大学水文水资源与水利工程科学国家重点实验室开放基金资助项目，国家自然科学基金资助项目(50379011) |
| 摘 要： | 在疏浚淤泥中添加固化材料和EPS颗粒,制作成淤泥EPS颗粒混合轻质土,既可以资源化利用疏浚淤泥,又可以减少软土的地基处理费用。通过直接剪切试验,获取了淤泥EPS颗粒混合轻质土的抗剪强度参数,即粘聚力与内摩擦角。研究发现:粘聚力随水泥添加量和龄期的增加而增加;在水泥添加量较小时,粘聚力随EPS添加量增加而增加,在水泥添加量较大时,粘聚力随EPS颗粒添加量增加而减小;水泥添加量、EPS颗粒添加量和龄期对内摩擦角的影响不显著,淤泥EPS颗粒混合轻质土的内摩擦角总体分布在20~°35°之间。 |
| 关 键 词： | 轻质土 淤泥 EPS颗粒 直接剪切试验 粘聚力 内摩擦角 |
| 文章编号： | 0451-0712（2007）02-0007-04 |
| 修稿时间： | 2006-09-11 |
Influencing Factors on Shear Strength of Dredged Sediment and EPS Beads-Mixed Lightweight Soil |
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| ZHU Wei,LI Ming-dong,TANG Jun,ZHANG Chun-lei.Influencing Factors on Shear Strength of Dredged Sediment and EPS Beads-Mixed Lightweight Soil[J].Highway,2007(2):7-10. | |
| Authors: | ZHU Wei LI Ming-dong TANG Jun ZHANG Chun-lei |
| Institution: | 1. State Key Laboratory of Hydrology, Water Resources and Hydraulic Engineering, Hobai University, Nanjing 210098, China; 2.College of Environmental Science and Engineering, Hohai University, Nanjing 210098, China; 3. Geotechnical Institute, Hohai University, Nanjing 210098, China |
| Abstract: | Through mixing of dredged sediment with EPS beads and cement can produce a type of lightweight soil,which can not only reutilize dredged sediment, but also reduce the fee of soft foundation treatment.As to this type of lightweight soil,direct shear test is used to study the influencing factors of cement content,EPS beads content and curing time on the shear parameters.Test results show cohesion increases with cement content and curing time increasing.When cement content is low,cohesion increases with EPS beads content increasing.When cement content is high,cohesion decreases with EPS beads content increasing.The factors of cement content,EPS beads content and curing time have little influence on the internal friction angle,the internal friction angles of tested samples totally lie between 20 and 35 degree. |
| Keywords: | lightweight soil dredged sediment EPS beads direct shear test cohesion internal friction angle |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |