Device and method for measuring permeability coefficient of cement-soil

A technology of permeability coefficient and cement soil, which is applied in the directions of measuring devices, permeability/surface area analysis, suspension and porous material analysis, etc., can solve the problems of poor versatility and high processing cost, and achieve accurate testing, processing and production. The effect of the simple measurement method

Inactive Publication Date: 2015-08-19
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0003] After searching the existing domestic literature on the determination method of cement-soil permeability coefficient, the applicant Anhui Academy of Hydraulic Sciences (patent publication number is CN101603913B) invented a method that uses a pressure chamber to apply back pressure to the sample to provide water head pressure to measure cement-soil. The device and method of the permeability coefficient, but the processing cost of the device is very expensive, and once the device is processed, it can only be used to measure the permeability coefficient of a cement-soil sample of a certain size. vary in size, so this device is not very versatile

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  • Device and method for measuring permeability coefficient of cement-soil
  • Device and method for measuring permeability coefficient of cement-soil
  • Device and method for measuring permeability coefficient of cement-soil

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[0028] The implementation of the present invention is described below through specific examples and in conjunction with the accompanying drawings, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific examples, and various modifications and changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0029] figure 1 It is a structural schematic diagram of a device for measuring cement-soil permeability coefficient in the present invention. Such as figure 1 As shown, a device for measuring cement-soil permeability coefficient of the present invention comprises a variable-section transparent plexiglass tube (1) with a scale on the top and a small diameter and a large diameter on the bott...

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Abstract

The invention discloses a device and a method for measuring a permeability coefficient of cement-soil. The device comprises a variable cross-section transparent organic glass tube (1), and an adapter (2) for connecting the variable cross-section transparent organic glass tube (1) with a sample (3), wherein the lower end of the adapter (2) is arranged in a rubber membrane (4) in a sleeving manner to be connected with the sample (3), the gap between the adapter (2) and the rubber membrane (4) is tightened by utilizing a rubber seal ring (8), a permeable stone (5) and a permeable stone (6) are arranged at the upper end and the lower end of the sample (3), and the device is placed in a water tank (9). The device and the method provided by the invention have the advantages of simple operation, cheapness in fabrication and stronger applicability.

Description

technical field [0001] The invention relates to the field of performance testing of underground engineering materials, in particular to a device and method for measuring cement-soil permeability coefficient. Background technique [0002] The cementation and ion exchange between cement hydration products and soil particles reduce the dispersion of soil particles, reduce the pores, and greatly improve the strength and impermeability of the soil. Therefore, cement-soil mixing piles have been widely used in anti-seepage projects such as deep foundation pit water-stop curtains, earth dams and flood embankments in recent years. However, due to different construction methods and soil properties, the impermeability of cement-soil varies greatly. Since the anti-seepage performance of cement-soil is directly related to the safe construction of anti-seepage engineering, the determination of the permeability coefficient of cement-soil is an indispensable work. [0003] After searching...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
Inventor 孟振陈锦剑王建华
Owner SHANGHAI JIAO TONG UNIV
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