Evaluation of natural and artificial fiber reinforcements on the mechanical properties of cement-stabilized dredged sediment
文献类型：期刊论文
| 作者 | Li, Jiang-Shan; Chen, Xin; Lang, Lei; He, Xing-Xing; Xue, Qiang
|
| 刊名 | SOILS AND FOUNDATIONS
 |
| 出版日期 | 2023-06-01 |
| 卷号 | 63期号:3 |
| 关键词 | Dredged sediment Chemical stabilization Fiber reinforcement mechanical properties Microstructure |
| ISSN号 | 0038-0806 |
| 英文摘要 | The combination of chemical stabilization and fiber reinforcement can simultaneously improve the strength and ductility of dredged sediment. The polypropylene fiber (PF) and straw fiber (SF) were respectively used as artificial and natural reinforcements of cement-stabilized dredged sediment (CDS). A series of unconfined compressive strength (UCS) tests were conducted to investigate the effects of cement content, fiber content, fiber length and water content on the mechanical properties of PF-reinforced CDS (CPFDS) and SF-reinforced CDS (CSFDS). Furthermore, the cementation-reinforcement mechanism was explored and analyzed via macro failure characteristics and micro interfacial morphologies inside typical CPFDS and CSFDS samples. The results showed that increasing cement content or decreasing water content significantly improved the UCS and aggravated the brittleness of CPFDS and CSFDS. The suitable addition of PF can effectively improve the UCS of CDS, while incorporating SF exhibited the opposite role. The maximum 7d-, 28d-, 60d-and 90d-UCS of CPFDS were respectively 17.7%, 43.6%, 10.7% and 9.7% higher than that of CDS. The optimum length of PF inside CPFDS and SF inside CSFDS was 3 mm and 5-10 mm, respectively. Both incorporating PF or SF can effectively improve the ductility of CDS. Based on the proposed parameters of total-water/cement ratio and fiber cementation factor, the effective strength devel-opment models of CPFDS and CSFDS considering cement content, fiber content, water content and curing time were empirically estab-lished. The fiber bridge effect and interfacial friction between fiber and cemented soil particles were mainly responsible for the strength evolution and ductility improvement of CPFDS and CSFDS.(c) 2023 Production and hosting by Elsevier B.V. on behalf of The Japanese Geotechnical Society. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
| 学科主题 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000985299300001 |
| 出版者 | JAPANESE GEOTECHNICAL SOC |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/35129]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS 2.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS; |
| 推荐引用方式 GB/T 7714 | Li, Jiang-Shan,Chen, Xin,Lang, Lei,et al. Evaluation of natural and artificial fiber reinforcements on the mechanical properties of cement-stabilized dredged sediment[J]. SOILS AND FOUNDATIONS,2023,63(3). |
| APA | Li, Jiang-Shan,Chen, Xin,Lang, Lei,He, Xing-Xing,&Xue, Qiang.(2023).Evaluation of natural and artificial fiber reinforcements on the mechanical properties of cement-stabilized dredged sediment.SOILS AND FOUNDATIONS,63(3). |
| MLA | Li, Jiang-Shan,et al."Evaluation of natural and artificial fiber reinforcements on the mechanical properties of cement-stabilized dredged sediment".SOILS AND FOUNDATIONS 63.3(2023). |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。