Calcareous sand hollow cylinder sample in-situ curing sample preparation instrument and method

A hollow cylindrical sample, in-situ curing technology, applied in the preparation of test samples and other directions, can solve the problems of instruments and devices that have not yet been reported, and achieve the effects of large void ratio, strong controllability, and improved uniformity

Pending Publication Date: 2021-04-20
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] In order to fully study the dynamic characteristics of calcareous sand reinforced by MICP under the action of waves, it is usually necessary to carry out the hollow cylindrical torsional shear test of the solidified calcareous sand. Instruments and devices have not been reported yet, and corresponding technical research is urgently needed

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  • Calcareous sand hollow cylinder sample in-situ curing sample preparation instrument and method
  • Calcareous sand hollow cylinder sample in-situ curing sample preparation instrument and method
  • Calcareous sand hollow cylinder sample in-situ curing sample preparation instrument and method

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] refer to Figure 1-Figure 4 , is a specific example of the in-situ solidification sample preparation instrument for calcareous sand hollow cylinder samples of the present invention, including No. 1 slurry storage vessel 1, No. 1 grouting pipe 2, No. 1 peristaltic pump 3, No. 1 graphite electrode 4, Waterproof breathable valve 5, rubber plug 6, grouting converter 7, pipe collar 8, plexiglass tube 9, cylinder assembly 10, No. 2 graphite electrode 11, exudate outlet pipe 12, outlet pipe plug 13, No. 2 grouting pipe 14, No. 2 peristaltic pump 15, No. 2 slurry storage dish 16, exudate collection dish 17, DC power supply 18;

[0028] The No. 1 slurry storage vessel 1 successively stored Ca-rich 2+ The gelling solution and the bacterial solution with its own anions, there are Ca-rich 2+The gelling solution; the No. 1 grouting pipe 2 is connected to the No. 1 grout s...

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Abstract

The invention discloses a calcareous sand hollow cylinder sample in-situ curing sample preparation instrument and method. The sample preparation instrument comprises a No.1 slurry storage vessel, a No.1 grouting pipe, a No.1 peristaltic pump, a No.1 graphite electrode, a waterproof ventilation valve, a rubber plug, a grouting converter, an organic glass tube, a cylinder assembly, a No.2 graphite electrode, a percolate outlet pipe, a No.2 grouting pipe, a No.2 peristaltic pump, a No.2 slurry storage vessel, a percolate collecting vessel and a direct-current power supply. The sample preparation method is realized by combining an MICP technology with a two-stage grouting method of pressure grouting and electroosmosis grouting, and the sample preparation instrument and the sample preparation method disclosed by the invention can obviously improve the curing effect of the prepared sample, so that the prepared sample has good integrity.

Description

technical field [0001] The invention belongs to the technical field of solidification of multidisciplinary subjects such as geotechnical engineering, chemistry, microbiology, electronics and electric engineering, and relates to an in-situ solidification sample preparation instrument and a sample preparation method for a calcareous sand hollow cylinder sample. Background technique [0002] The seabed of Xisha in the South my country Sea is rich in calcareous sand, which has the characteristics of irregular shape, low strength and easy breakage. At present, concrete, cement, lime or chemical grouting are often used in the construction of Xisha islands and reefs in the South China Sea to reinforce the seabed foundation. Marine ecology has adverse effects, and concrete often fails due to salt erosion, and the subsequent maintenance costs cannot be underestimated. For chemical grouting materials, in addition to water glass (Na 2 SiO 3 ) In addition, most chemical pulp material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
Inventor 朱剑锋杨浩
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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