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A two-component quick-setting slurry rheological parameter testing device and testing method

A technology of rheological parameters and testing methods, which is applied to the measurement of direct current flow characteristics, etc., can solve the problems of inability to test rheological parameters and obtain the yield stress of slurry, and achieve effective and accurate measurement

Active Publication Date: 2022-04-29
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inventor found that the capillary viscometer also regards the slurry as a Newtonian fluid, and can only obtain the viscosity parameter of the slurry, but cannot obtain the yield stress of the slurry, and this type of viscometer cannot test all rheological parameters

Method used

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  • A two-component quick-setting slurry rheological parameter testing device and testing method
  • A two-component quick-setting slurry rheological parameter testing device and testing method
  • A two-component quick-setting slurry rheological parameter testing device and testing method

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Embodiment 1

[0050] In a typical embodiment of the present invention, the slurry to be tested is a self-developed two-component quick-setting slurry, and the self-developed slurry is composed of component A and component B. Component A is cement slurry, and component B is a quick-setting agent with water glass as the main agent and high molecular polymer as the additive. When component A and component B are mixed in a specific proportion, the slurry will gradually gel and solidify. In this example, the water-cement ratio of component A cement slurry is W / C=1, and the volume ratio of component A cement slurry to component B quick-setting agent is 3:1.

[0051] The device for testing the rheological parameters of the two-component quick-setting slurry in this embodiment includes two modules, namely, the slurry delivery module 1 and the measurement module 2 . The grouting module 1 includes component A constant rate grouting pump 3, component A grouting pipe 4, component B constant rate grouti...

Embodiment 2

[0060] This embodiment provides the method for testing the rheological parameters of the two-component quick-setting slurry, and the specific steps are:

[0061] 1) Determine the component category and component distribution ratio of the two-component quick-setting slurry to be tested, determine the gel time range 0-T and the gel time gradient T / n of the grout to be tested, and determine the flow range Q of the grout 1 ~Q 2 and slurry flow gradient (Q 2 -Q 1 ) / m;

[0062] 2) Assemble the slurry delivery module and measurement module of the rheological parameter testing device, and put the specified component A and component B into the slurry storage tank respectively;

[0063] 3) Set the slurry gel time t=0 and the slurry flow rate q=Q of the first group of experiments 1 ;

[0064] 4) Determine the length of the double-liquid slurry delivery pipe according to the gelation time t of the serous fluid, the flow rate of the serous fluid q, and the inner diameter of the double...

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Abstract

The invention discloses a rheological parameter testing device and testing method of two-component quick-setting grout, which includes a slurry delivery module and a measurement module, and the slurry delivery module includes a first constant-rate grouting pump and a second constant-rate grouting pump , the first constant-rate grouting pump and the second constant-rate grouting pump are both connected to the double-liquid mixer; the measurement module includes a measuring tube connected to the double-liquid mixer, and a waste slurry pool is arranged at the end of the measuring tube to dispose the slurry Discharged to the waste slurry pool, the first pressure sensor is installed at the slurry inlet end of the measuring tube, and the second pressure sensor is installed at the slurry outlet end of the measuring tube to monitor the pressure difference between the two to obtain the slurry viscosity and slurry yield stress.

Description

technical field [0001] The invention belongs to the technical field of testing rheological parameters of slurry, and in particular relates to a testing device and a testing method for rheological parameters of two-component quick-setting slurry. Background technique [0002] The grouting method is often used in the fields of geotechnical engineering, such as reinforcement and water blocking of unfavorable geological bodies, and building foundation improvement. To improve the effect of grouting reinforcement and water blocking, quick-setting grout is often used as the grouting material, and its rapid gel properties are used to limit the grout diffusion range during the grouting diffusion process and ensure the grouting effect. The salient feature of quick-setting slurry is fast gel curing, and the gel curing time is often in the range of tens of seconds to more than ten minutes. During the gel curing process of quick-setting slurry, the rheological parameters of the slurry su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N11/08
CPCG01N11/08
Inventor 张连震王洪超翁贤杰张庆松冯慧君俞然刚杨文东楚云添王洪波韩子川张青赵耀
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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