Study on resistance of wind/sand erosion based on a solidifying composite material of hydrophilic polyurethane

被引：1
作者：
Gao W. [1 ]
Wu Z. [1 ]
Wu Z. [1 ]
Iwashita K. [2 ]
Yang C. [3 ]
Li R. [4 ]
Dong Z. [5 ]
机构：
[1] Department of Urban and Civil Engineering, Ibaraki University, Hitachi, 316-8511, Nakanarusawa-cho
[2] Department of Civil Engineering, Meijo University, Tenpaku-ku, Nagoya
[3] International Institute for Urban Systems Engineering, Southeast University, Nanjing
[4] Water Conservancy and Hydroelectric Scientific Research Institute of Qinghai Province, Xining
[5] Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou
来源：
Zairyo/Journal of the Society of Materials Science, Japan | 2011年 / 60卷 / 09期
关键词：
Field demonstration; Hydrophilic polyurethane; Sand-fixing layer; Wind erosion; Wind tunnel test;
D O I：
10.2472/jsms.60.850
中图分类号：
学科分类号：
摘要：
A novel solidifying composite material based on hydrophilic polyurethane (abbreviated as W-OH) is used as a sustainable sand-fixing material. The objective of this study was to investigate the actual function of desertification control using W-OH to fix sand from the Qinghai Lake basin. In the first experiment, the effects of sand fixing and resistance of wind/sand erosion were studied by wind tunnel testing. The wind/sand erosion modulus was measured and studied by setting the wind-sand flow velocity to 10m/s, 15m/s, 20m/s or 25m/s and the direction to 0°, 30° or 60°, respectively. A field demonstration was constructed in the Qinghai Lake basin to investigate the actual effects on sand fixation outdoors. The results of wind tunnel testing showed that W-OH can well fix the sand of the Qinghai Lake basin. The sand-fixing layer formed by a W-OH concentration of 3% remained intact under the action of a 25-m/s wind and sand flow. W-OH concentrations of 4% and 5% showed excellent resistance to wind/sand erosion. In the demonstration, the area without W-OH treatment had an amount of 15g/m2/h of windblown sand on average, and the area tacked with a W-OH concentration of 2% showed a reduced amount of windblown sand. However, the area was still seriously damaged by wind/sand erosion. The area treated with a W-OH concentration of 3% showed good resistance to wind/sand erosion without any damage during a 49-day test. © 2011 The Society of Materials Science, Japan.
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页码：850 / 855
页数：5
相关论文
共 13 条
  • [1] Chen W.N., Dong Z.B., Li Z.S., Yang Z.T., Wind tunnel test of the influence of moisture on the erodibility of loessial sandy loam soils by wind, Journal of Arid Environments, 34, pp. 391-402, (1996)
  • [2] Dirk G., Zvi Y.O., Aeolian dust erosion on different types of hills in a rocky desert: Wind tunnel simulations and field measurements, Journal of Arid Environments, 37, pp. 209-229, (1997)
  • [3] Kade A., Warren S.D., Soil and plant recovery after historic military disturbances in the Sonoran Desert, USA, Arid Land Research and Management, 16, 3, pp. 231-243, (2002)
  • [4] Wand L.L., Qin Z.Y., Qin N.S., Climate change and its impact on desertification around qinghai lake, Plateau Meteorology, 21, 1, pp. 59-65, (2002)
  • [5] Michels K., Sivakumar M.V.K., Allison B.E., Wind erosion control using crop residue I. Effects on soil flux and soil properties, Field Crops Research, 40, 2, pp. 101-110, (1995)
  • [6] Lopez M.V., Sabre M., Gracia R., Arrue J.L., Gomes L., Tillage effects on soil surface conditions and dust emission by wind erosion in semiarid Aragon (NE Spain), Soil and Tillage Research, 45, 1-2, pp. 91-105, (1998)
  • [7] Wu Z.R., Iwashita K., Wu Z.S., Inagaki H., Development of sand stabilization and greening technique with organic slurry containing hydrophilic polyurethane, The 4th International Workshop for R & D Clustering among China, Japan, Korea in Eco-Materials Processing (CJK 2008) (Keynote), (2008)
  • [8] Wu Z.R., Iwashita K., Wu Z.S., Inagaki H., Research on sand dune fixation and green vegetation of a novel chemical material and construction method of demonstration areas around qinghai lake, The Report of METI NEDO Project: H19, (2009)
  • [9] Wu Z.R., Iwashita K., Wu Z.S., Inagaki H., Experimental study on evaluation and control of ultraviolet resistance of sand stabilized with organic slurry containing hydrophilic polyurethane, Journal of the Society of Material Science, Japan, 57, 11, pp. 1167-1172, (2008)
  • [10] Wu Z.R., Iwashita K., Wu Z.S., Gao W.M., Inagaki H., UV irradiation degradation control of sand stabilized with organic slurry containing hydrophilic polyurethane, Journal of the Society of Material Science, Japan, 60, 3, pp. 235-239, (2011)
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