Study on Effect of Particle Size Distribution on Water-Retention Capacity of Coral Sand from Macro and Micro Perspective
文献类型：期刊论文
| 作者 | Wu, Hao1,2; Lei, Xuewen1; Chen, Xiang2; Shen, Jianhua2; Wang, Xinzhi2; Ma, Tiantian2 |
| 刊名 | JOURNAL OF MARINE SCIENCE AND ENGINEERING
 |
| 出版日期 | 2024-02-01 |
| 卷号 | 12期号:2页码:20 |
| 关键词 | coral sand water-retention capacity particle size distribution nuclear magnetic resonance pore water distribution |
| DOI | 10.3390/jmse12020341 |
| 英文摘要 | The reclamation coral sand (CS) layer is the survival environment for island reef vegetation in the South China Sea. The root system within the CS bed draws water necessary for vegetation growth, implying that the water-retention capacity of CS plays a pivotal role in determining vegetation viability. Particle size distribution (PSD) significantly influences the water-retention capacity of geomaterials. This study examines the impact of PSD on the water-retention capacity of CS from both macro (soil-water characteristic curve, SWCC) and micro (pore water distribution) perspectives using the pressure plate test and nuclear magnetic resonance technique, and an F&X model was used to analyze the SWCC of CS. The findings indicated that the F&X model aptly describes the SWCC of CS with different PSDs. Both the air entry value and residual water content rise with an increased content of fine grains (d < 0.25 mm), suggesting that the presence of fine grains augments the water-retention capacity of CS. It is considered that a size range of d = 0.075-0.25 mm predominantly impacts the water-retention capacity of CS. The PSD primarily influences the water-retention capacity by affecting the pore size distribution of CS. The volume of small pores swells with the surge of fine-grain content, while the maximum pore size contracts with increasing fine-grain content. Limited pore connectivity in CS means macropores can retain water even under high suction, bolstering the water-retention capacity of CS. These findings offer theoretical guidance for selecting gradation parameters for the planting layer on island reefs. |
| 资助项目 | National Natural Science Foundation of China |
| WOS研究方向 | Engineering ; Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:001172046800001 |
| 出版者 | MDPI |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/40726]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Shen, Jianhua |
| 作者单位 | 1.Wuhan Univ Sci & Technol, Sch Urban Construct, Wuhan 430065, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geotech Mech & Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Hao,Lei, Xuewen,Chen, Xiang,et al. Study on Effect of Particle Size Distribution on Water-Retention Capacity of Coral Sand from Macro and Micro Perspective[J]. JOURNAL OF MARINE SCIENCE AND ENGINEERING,2024,12(2):20. |
| APA | Wu, Hao,Lei, Xuewen,Chen, Xiang,Shen, Jianhua,Wang, Xinzhi,&Ma, Tiantian.(2024).Study on Effect of Particle Size Distribution on Water-Retention Capacity of Coral Sand from Macro and Micro Perspective.JOURNAL OF MARINE SCIENCE AND ENGINEERING,12(2),20. |
| MLA | Wu, Hao,et al."Study on Effect of Particle Size Distribution on Water-Retention Capacity of Coral Sand from Macro and Micro Perspective".JOURNAL OF MARINE SCIENCE AND ENGINEERING 12.2(2024):20. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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