Sandstone similar material and preparation method thereof

A technology of similar materials and sandstone, applied in the field of preparation of rock-like material specimens, to achieve the effects of wide practicability, low cost and high production efficiency

Inactive Publication Date: 2018-12-18
HUBEI ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by this invention is to provide a kind of sandstone similar material and preparation method thereof, thereby adopt similar material-sandstone similar material similar to rock (brittleness and dilatancy) to make class sandstone model sample, to solve existing technical problem

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  • Sandstone similar material and preparation method thereof
  • Sandstone similar material and preparation method thereof
  • Sandstone similar material and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0027] Present embodiment provides a kind of sandstone similar material formula:

[0028] The aggregate is quartz sand (50 mesh) and silica fume (350 mesh), the cement material is cement, and the additives are water reducer and distilled water. Wherein in parts by weight, cement: quartz sand: silica fume: distilled water: water reducing agent=20:16:2.2:5.6:0.2.

[0029] The present embodiment provides the preparation method of this similar material, and the operation steps are as follows:

[0030] a. Weigh cement, quartz sand and silica fume, mix and stir evenly to obtain mixed powder a;

[0031] b. Weigh distilled water and water reducer and mix well to obtain mixed solution b;

[0032] c. Add the mixed powder material a into the mixed liquid material b, and use a high-strength mixer to fully stir evenly;

[0033] d. Pour the mixed materials into the pre-made mold, pay attention to control the pouring speed, at 30-40m 3 Slow and uniform pouring at a speed of / h;

[0034]...

Embodiment 2

[0038] A sandstone-like material in this embodiment includes coarse aggregate quartz sand, fine aggregate silica powder, cement cement, additive polycarboxylate water reducer, and distilled water, wherein the components are calculated in parts by weight, cement: quartz sand : silicon powder: distilled water: water reducer = 16:18:3.2:5.2:0.25.

[0039] Its preparation method is similar to that of Example 1 and will not be repeated here.

Embodiment 3

[0041] A sandstone-like material in this embodiment includes coarse aggregate quartz sand, fine aggregate silica powder, cement cement, additive polycarboxylate water reducer, and distilled water, wherein the components are calculated in parts by weight, cement: quartz sand : silicon powder: distilled water: water reducer = 20:14:1.8:5:0.15.

[0042] Its preparation method is similar to that of Example 1 and will not be repeated here.

[0043] The development of similar materials must first select suitable similar materials, suitable preparation methods and maintenance methods, and then calculate the similarity ratio according to the similarity theory and the physical and mechanical properties of the original rock in actual engineering, so as to determine the physical and mechanical parameters of similar materials, and finally prepare the Similar materials for research purposes.

[0044] Table 1 has listed the sandstone similar material that the embodiment of the present inve...

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Abstract

The invention provides a sandstone high-strength high-brittleness similar material and a preparation method thereof. Raw materials comprise quartz sand, silicon powder, cement, distilled water and a water reducer. based on physical and mechanical properties and microscopic features of protolith, a method of regulating material properties by using aggregate is adopted, quartz sand is selected to improve brittleness of the material, and silicon powder is selected to raise strength of the material. Thereby, brittleness and strength of the sandstone similar material are achieved, and main physicaland mechanics parameters (density, elastic modulus, cohesion, internal friction angle, uniaxial compressive strength, tensile strength and Poisson's ratio, etc.) of the similar material and protolithmeet the similarity theory. Features of sandstone in rock slope of Xinjiang Tianshan highway are successively simulated. The types of required materials are less, and the cost is low. The manufactureefficiency is high. The material of the invention has wide practicality.

Description

technical field [0001] The invention belongs to the technical field of preparation of rock-like material test pieces, and in particular relates to a sandstone-like material and a preparation method thereof. Background technique [0002] Sandstone is the most common rock in rock engineering. It is cemented by various gravels and is a sedimentary rock produced by weathering and denudation. The joints and fissures are highly developed. The use of natural sandstone samples has the problems of low sampling success rate and large differences in mechanical properties of samples. It is difficult to carry out quantitative research on the physical and mechanical indicators of rocks. The model test has the advantages of strong controllability, short period and low cost, and can effectively avoid many problems faced in field sampling, such as many external factors, high research costs, complex conditions and long sampling period. The model test unifies the structural characteristics an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B14/06C04B18/14G01N1/28G01N1/38G01N1/36
CPCC04B14/06C04B18/146C04B28/04C04B2201/20C04B2201/50G01N1/28G01N1/36G01N1/38G01N2001/366G01N2001/386C04B22/002C04B2103/302Y02W30/91
Inventor 路亚妮童友枝李晓目杨元明杨秀华
Owner HUBEI ENG UNIV
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