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Cement-based high-strength geomechanic model test similar material and preparation method thereof

A technology of geomechanics and model testing, applied in the preparation of test samples, etc., can solve the problem of difficulty in achieving high bulk density, and achieve the effects of low cost, large bulk density and simple process

Inactive Publication Date: 2018-08-24
ARMY ENG UNIV OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention solves the problem in the prior art that it is difficult to achieve high bulk density when simulating high-strength rocks, and provides a similar material for geomechanical model tests that is easy to form, has stable mechanical properties, and is cheap

Method used

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  • Cement-based high-strength geomechanic model test similar material and preparation method thereof
  • Cement-based high-strength geomechanic model test similar material and preparation method thereof
  • Cement-based high-strength geomechanic model test similar material and preparation method thereof

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Embodiment 1

[0025] Component A described in similar materials is based on 100 parts, 2 parts of 32.5 ordinary Portland cement, 62 parts of barite sand, 23 parts of barite powder, 5 parts of silica fume; The amount of water used is 8 parts. Add cement, barite sand, barite powder, and silica fume to the cement mortar mixer. After stirring at low speed for 30 seconds, add water in the second 30 seconds, and then stir at high speed for 60 seconds. Finish.

[0026] The product of the present invention has a bulk density of 2970kg / m 3 , 14 days, 28 days compressive strength were 0.83MPa, 0.97MPa.

Embodiment 2

[0028] Component A described in similar materials is based on 100 parts, 3 parts of 32.5 ordinary Portland cement, 61 parts of barite sand, 22 parts of barite powder sand, and 5 parts of silica fume; The amount of water used is 9 parts. Add cement, barite sand, barite powder, and silica fume to the cement mortar mixer. After stirring at low speed for 30 seconds, add water in the second 30 seconds, and then stir at high speed for 60 seconds. Finish.

[0029] The product of the present invention has a bulk density of 2980kg / m 3 , 14 days, 28 days compressive strength were 1.1MPa, 1.4MPa.

Embodiment 3

[0031] Component A described in similar materials is based on 100 parts, 4 parts of 32.5 ordinary Portland cement, 60 parts of barite sand, 21 parts of barite powder sand, and 5 parts of silica fume; The amount of water used is 10 parts. Add cement, barite sand, barite powder, and silica fume to the cement mortar mixer. After stirring at low speed for 30 seconds, add water in the second 30 seconds, and then stir at high speed for 60 seconds. Finish.

[0032] The product of the present invention has a bulk density of 2990kg / m 3 , 14 days, 28 days compressive strength were 1.4MPa, 1.9MPa.

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Abstract

The invention discloses a cement-based high-strength geomechanic model test similar material. The cement-based high-strength geomechanic model test similar material has the advantages of easiness in molding, stable mechanical performances and low price. The cement-based high-strength geomechanic model test similar material comprises a component A and a component B, the component A is prepared by mixing, by weight, 2-6 parts of cement, 5 parts of silica fume, 57-65 parts of barite sands and 22-30 parts of barite powder, the component B is composed of water, and a ratio of the use amount of cement mortar in the component A to the use amount of the water in the component B is 100:(8-12). The similar material can be used by uniformly mixing the component A with the component B.

Description

technical field [0001] The invention relates to a similar material for a mechanical model test and a preparation method thereof, in particular to a cement-based high-strength geomechanical model test similar material and a preparation method thereof. Background technique [0002] Geomechanical model test is an important means of rock mechanics research, and its scientificity depends on the similar physical change process between the similar materials used to build the model and the simulated surrounding rock. The scientific nature of the geomechanics model test depends first on the fact that the model and the prototype have the same physical change process, and the selection of similar materials is the basis for affecting the scientific nature of the model test. Similar materials mainly use artificial materials to simulate natural rocks. Under the condition of basically satisfying the similarity principle, the physical and mechanical performance indicators of artificial mate...

Claims

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Application Information

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IPC IPC(8): C04B28/04G01N1/38
CPCC04B28/04C04B2111/00991C04B2201/20C04B2201/50G01N1/38C04B18/146C04B14/368
Inventor 戴银所
Owner ARMY ENG UNIV OF PLA
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