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Transparent soil based on 3D printing transparent soil particle material and preparation method thereof

A 3D printing, granular material technology, applied in the field of geotechnical engineering visualization model test, can solve the problems of affecting the refractive index of calcium bromide solution, low purity of fused silica sand, easy precipitation of calcium bromide crystals, etc. Visualization, the effect of good optical properties

Pending Publication Date: 2019-03-29
CHONGQING UNIV
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  • Application Information

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Problems solved by technology

There are disadvantages: first, the calcium bromide solution is highly corrosive and has poor operability; second, the purity of fused silica sand is low, and the price is relatively high, which also limits its wide application in model tests; third, Because the refractive index of fused silica sand is relatively high, the calcium bromide solution with the corresponding refractive index is prepared with a high concentration; as the temperature changes, calcium bromide crystals are easy to precipitate, thus affecting the refractive index of the calcium bromide solution

Method used

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  • Transparent soil based on 3D printing transparent soil particle material and preparation method thereof

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Embodiment 1

[0029] This embodiment discloses a transparent soil based on 3D printing transparent soil particle material, including transparent solid material and pore liquid.

[0030] The transparent solid material adopts 3D printed transparent soil particles. The printing material of the transparent soil particles is selected from photosensitive resin. The particle diameter of the transparent soil particles is 1.5-2.5 mm, the refractive index is 1.51-1.52, and the specific gravity is 1.10-1.12.

[0031] The pore liquid is a mixed liquid of small molecule benzyl silicone oil and n-dodecane. The refractive index of the pore liquid is the same as that of the transparent earth particles.

[0032] The transparent soil particles are mixed with pore liquid to form artificially synthesized transparent soil.

Embodiment 2

[0034] see figure 1 , this embodiment discloses a method for preparing transparent soil based on the 3D printing transparent soil granular material described in Example 1, comprising the following steps:

[0035] 1) Establish a three-dimensional model of transparent soil particles using Fourier transform. Using 3D modeling software, after cross-sections are obtained using Fourier transform in a two-dimensional (2D) state, interpolation is used to generate particles simulating geotechnical materials in 3D space.

[0036] 2) Using the light-curing 3D printer to control the characteristics of the printing form and material properties, print transparent particles that are consistent with natural soil particles, and then obtain properties similar to natural soil. Among them, the printing material of transparent soil particles is selected from photosensitive resin. Photosensitive resin has good transparency, stable properties, high strength and hardness, no pollution and toxicity....

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Abstract

The invention provides transparent soil based on a 3D printing transparent soil particle material and a preparation method thereof. The transparent soil includes a transparent solid material and porous liquid. The transparent solid material adopts transparent soil particles printed by 3D. The porous liquid is a mixture of small molecule phenylmethylsilicone fluid and n-dodecane. The preparation method of the transparent soil comprises steps of carrying out three-dimensional modeling on transparent soil particles which simulate a geotechnical material, printing the transparent soil particles, spraying varnish and mixing the porous liquid. The transparent soil preparation method is simple and convenient to operate and easy to realize. The prepared artificially-synthesized transparent soil has good transparent effects and can be effectively used in a model experiment in geotechnical engineering.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering visualization model tests, in particular to an experimental method for 3D printing transparent soil particle materials. Background technique [0002] Soil deformation measurement is one of the important foundations of soil mechanics research. The traditional indoor model test measurement is affected by the size of the sensor and the deformation of the soil boundary area by embedding sensors inside the soil. [0003] In order to realize the visualization of the deformation and seepage inside the soil, the transparent soil experiment was developed. The existing transparent soil is generally composed of two materials, that is, transparent soil particles and pore fluid with corresponding refractive index, because these two materials have the same or similar refractive index, light can pass through without refraction, so this The "soil" is transparent. [0004] The properties of natu...

Claims

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Application Information

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IPC IPC(8): G01N33/00G01N21/41
CPCG01N21/41G01N33/00
Inventor 周航李颖臻刘汉龙肖杨孔纲强白久林
Owner CHONGQING UNIV
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