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Sodium metasilicate cemented rock similar material and preparation method thereof

A technology of rock similarity and sodium metasilicate, which is applied in the field of geomechanical model tests, can solve the problems that cannot fully meet the needs of model tests, and achieve the effects of stable properties, large adjustment range, and simple preparation methods

Active Publication Date: 2015-03-04
PLA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The two types of materials have their own advantages and disadvantages, and the applicable situations are not the same, but they still cannot fully meet the needs of model tests.

Method used

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  • Sodium metasilicate cemented rock similar material and preparation method thereof
  • Sodium metasilicate cemented rock similar material and preparation method thereof
  • Sodium metasilicate cemented rock similar material and preparation method thereof

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preparation example Construction

[0031] A kind of preparation method of sodium metasilicate cemented rock similar material, this method comprises the steps:

[0032] (1) Weigh coarse aggregate, barite powder, anhydrous sodium metasilicate, sodium fluorosilicate and water according to the proportion of each component;

[0033] (2) Put the anhydrous sodium metasilicate into the container, pour in water, fully dissolve to form a sodium metasilicate solution;

[0034] (3) Pour the coarse aggregate, barite powder and sodium fluorosilicate into the mixer, and mix well to form a solid mixture;

[0035] (4) Stir the solid mixture again, and at the same time slowly and evenly pour the sodium metasilicate solution in step (2) into the solid mixture, and mix well;

[0036] (5) Put the mixed material into the mold, vibrate it, and pour it into shape;

[0037] (6) Put the test piece in a ventilated and dry place for 5-7 days, and demould, and then you can get a test piece of sodium metasilicate cemented rock similar mat...

Embodiment 1

[0040] Embodiment 1: material proportioning

[0041] Quartz sand 30% of the total weight of the aggregate

[0042] Barite powder 70% of the total weight of aggregate

[0043] Anhydrous sodium metasilicate 3% of the total weight of aggregate

[0044] Sodium fluorosilicate 60% of the total weight of anhydrous sodium metasilicate

[0045] Water 15% of the total weight of the aggregate

[0046] First pour the quartz sand, barite powder and sodium fluorosilicate weighed according to the proportion into the mixer, and mix well; then mix the anhydrous sodium metasilicate weighed according to the proportion with water, and fully dissolve; then Pour the anhydrous sodium metasilicate solution into the mixture, and mix well; then put the mixed mixture into the mold, and vibrate to make it densely formed; after 5 to 7 days of natural curing, it can be demolded.

[0047] Cylindrical molds are used for sample preparation, which can be used to make standard uniaxial compression samples, ...

Embodiment 2

[0049] Embodiment 2: material proportioning

[0050] Quartz sand 40% of the total weight of the aggregate

[0051] Barite powder 60% of the total weight of aggregate

[0052] Anhydrous sodium silicate 4% of the total weight of aggregate

[0053] Sodium fluorosilicate 60% of the total weight of anhydrous sodium metasilicate

[0054] Water 12% of the total weight of the aggregate

[0055] First pour the quartz sand, barite powder and sodium fluorosilicate weighed according to the proportion into the mixer, and mix well; then mix the anhydrous sodium metasilicate weighed according to the proportion with water, and fully dissolve; then Pour the anhydrous sodium metasilicate solution into the mixture, and mix well; then put the mixed mixture into the mold, and vibrate to make it compact; after 5 to 7 days of natural curing, it can be demolded.

[0056]Cylindrical molds are used for sample preparation, which can be used to make standard uniaxial compression samples, Brazilian sp...

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Abstract

The invention discloses a sodium metasilicate cemented rock similar material. The rock similar material with required physical and mechanical parameters is prepared by using coarse aggregates and fine aggregates as aggregates, anhydrous sodium metasilicate as a cementing agent, sodium fluosilicate as a curing agent and water as a blending agent, uniformly mixing and stirring, carrying out rapid mold filling and then curing. The sodium metasilicate cemented rock similar material is wide in raw material source, low in price, nontoxic and harmless; the physical and mechanical parameters of the similar material disclosed by the invention are wide in adjustment range and convenient to adjust, and the deformation damage processes of most project surrounding rocks can be simulated; and a preparation method of the sodium metasilicate cemented rock similar material is simple and convenient for casting moulding and operation; and the operation that a finished product is cured under a special condition is not needed, and the finished product is relatively rapid in strength development and stable in property.

Description

technical field [0001] The invention belongs to the technical field of geomechanics model tests, in particular to a sodium metasilicate cemented rock-like material and a preparation method thereof. Background technique [0002] Geomechanical model test is a common method in the study of rock mechanics and underground engineering stability. In related research, it is often necessary to carry out simulation tests on the deformation and failure process of surrounding rock excavation or engineering disasters induced by underground engineering excavation. The model test uses appropriate similar materials to make a test model similar to the prototype, observes the deformation and damage of the model constructed of similar materials under external effects, and calculates the working state of the original rock according to the similarity principle, so as to provide a basis for the design and construction of rock underground engineering. It provides a scientific basis for the prevent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/26C04B22/12C04B14/36C04B14/06
Inventor 范鹏贤王明洋吴兰冬马林建王德荣王源
Owner PLA UNIV OF SCI & TECH
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