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Volume 50 Issue 12
Mar.  2021
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Article Navigation >  INDUSTRIAL CONSTRUCTION  > 2020  >  50(12): 19-24,118
ZHANG Jianwei, HAN Yi, BIAN Hanliang, HUANG Xiaoshan, WANG Xiaoju, LI Beibei. EXPERIMENTAL RESEARCH ON WIND RESISTANCE OF SILTY SOIL CEMENTED BY SOYBEAN UREASE INDUCED CALCIUM CARBONATE PRECIPITATION[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(12): 19-24,118. doi: 10.13204/j.gyjzG20021404
Citation: ZHANG Jianwei, HAN Yi, BIAN Hanliang, HUANG Xiaoshan, WANG Xiaoju, LI Beibei. EXPERIMENTAL RESEARCH ON WIND RESISTANCE OF SILTY SOIL CEMENTED BY SOYBEAN UREASE INDUCED CALCIUM CARBONATE PRECIPITATION[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(12): 19-24,118. doi: 10.13204/j.gyjzG20021404
shu

EXPERIMENTAL RESEARCH ON WIND RESISTANCE OF SILTY SOIL CEMENTED BY SOYBEAN UREASE INDUCED CALCIUM CARBONATE PRECIPITATION

doi: 10.13204/j.gyjzG20021404

  • 1. School of Civil Engineering and Architecture, Henan University, Kaifeng 475004, China;

  • 2. Henan Provincial Research Center of Engineering on Intelligent Construction of Rail Transit, Kaifeng 475004, China

  • Received Date: 2020-02-14
    Available Online: 2021-03-31
    Abstract
  • In the light of the increasingly serious dust pollution, the technique of soybean urease induced calcium carbonate deposition (EICP) was used to control the dust of exposed silt in the flood area of the Yellow River. The reaction solution of soybean urease extracted by centrifugation and urea-calcium chloride was used to cement the silt in the flood area of the Yellow River,and the indoor wind resistance test, calcium carbonate production test and surface strength test were conducted. The results showed that the technique of soybean urease induced carbonate precipitation could form a crust in the surface of silty soil, which made the surface soil particles cement together and have the characteristics of wind erosion resistance. In order to further reveal the effectiveness of EICP in the treatment of dust, the effects of different concentrations of reaction solution, mass concentrations of soybean powder and sprayed amounts on cementing effect of silt were studied. The results showed that the mass loss of soil specimens decreased with the increase of the concentration of reaction solution, the mass concentration of the soybean powder and the amounts of being sprayed, when the reaction solution concentration was 0.08 mol/L, the mass concentration of soybean powder was 40 g/L and the volume of treatment solution was 4 L/m2, the mass loss of EICP cemented specimens was zero, the specimens were of good wind erosion resistance characteristics.
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