Empty cell body structure and method for preparing explosion-proof porous concrete by empty cell body structure

A technology of porous concrete and concrete base material, which is applied in the construction field to achieve the effect of improving absorption capacity, avoiding secondary damage, improving resistance and absorbing

Active Publication Date: 2017-03-22
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the field of construction, there is no relevant report about negative Pois

Method used

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  • Empty cell body structure and method for preparing explosion-proof porous concrete by empty cell body structure
  • Empty cell body structure and method for preparing explosion-proof porous concrete by empty cell body structure
  • Empty cell body structure and method for preparing explosion-proof porous concrete by empty cell body structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] It is used to prepare empty cells of explosion-proof porous concrete with a negative Poisson's ratio effect, and the concave structure of the explosion-proof porous concrete is obtained by dispersing the empty cells in concrete; the empty cells are composed of two centrally symmetrical regular six-sided The upper and lower ends of the empty cell body are the bottom of the regular six-sided terrace, and the tops of the two regular six-sided terraces are connected; the bottom of the regular six-sided terrace is designed with a solid regular hexagonal pyramid Structure; the regular hexagonal pyramid and the regular six-sided terrace share the bottom surface.

[0037] Wherein, the side length of the hexagon at the bottom of the regular hexagonal platform is 5mm, the side length d of the hexagonal shape at the top of the regular hexagonal platform is 1.5mm, the height h of the empty cell body is 9mm, and the regular hexagonal pyramid The height c is 2.5mm, and the volume of ...

Embodiment 2

[0053] Example 2: Explosion-proof porous concrete with concave hole structure

[0054] The difference from Example 1 is that in the hollow body used to prepare the explosion-proof porous concrete with negative Poisson's ratio effect, the side length of the hexagon at the bottom of the regular six-sided terrace is 5 mm, and the hexagon at the top of the regular six-sided terrace is 5 mm. The side length d of the polygon is 2.1 mm, the height h of the empty cell body is 11 mm, the height c of the regular hexagonal pyramid is 3 mm, and the volume of a single empty cell body is 578 mm 3 .

[0055] In the method for preparing hollow cells of explosion-proof porous concrete with a negative Poisson's ratio effect, the material for preparing the hollow cells is ultra-high molecular weight polyethylene.

[0056] In the preparation method of the explosion-proof porous concrete with negative Poisson's ratio effect, step (2): Weigh 280g of sulfate-resistant cement, 0.5g of polycarboxylat...

Embodiment 3

[0058] Example 3: Explosion-proof porous concrete with inner concave hole structure

[0059] The difference from Example 1 is that in the hollow body used to prepare the explosion-proof porous concrete with negative Poisson's ratio effect, the side length of the hexagon at the bottom of the regular six-sided terrace is 5 mm, and the hexagon at the top of the regular six-sided terrace is 5 mm. The side length d of the polygon is 2 mm, the height h of the empty cell body is 10 mm, the height c of the regular hexagonal pyramid is 3 mm, and the volume of a single empty cell body is 550 mm 3 .

[0060] In the preparation method for preparing the hollow body of explosion-proof porous concrete with negative Poisson's ratio effect, the material for preparing the hollow body is polyvinyl chloride.

[0061] In the preparation method of explosion-proof porous concrete with negative Poisson's ratio effect, step (2): Weigh 320g of Portland cement, 0.7g of polycarboxylate water reducer and...

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Abstract

The invention discloses an empty cell body for preparing explosion-proof porous concrete with negative poisson ratio effect. A concave hole structure of the explosion-proof porous concrete is obtained by dispersing the empty cell body in the concrete. The empty cell body is composed of two centrosymmetric regular hexahedral foot-space structures; the upper end and the lower end of the empty cell body are the bottom of the regular hexahedral foot-space; and the tops of the two regular hexahedron half-spaces are connected; the bottom end of the regular hexahedron half-space is designed with a solid regular hexapyramid structure; the regular hexapyramid and the hexahedral foot-space share the bottom surface. The volume of the single empty cell body is 100-1000mm<3>. Through the negative poisson ratio effect design, the empty cell body is used for preparing the porous concrete with the concave hole structure, the minimum poisson ratio is -0.75, the storage modulus can be maximally improved to 327%, thereby greatly improving the resistance and capability of absorbing the explosion load energy, the building structure and the internal personal and property security can be maximally protected.

Description

technical field [0001] The invention belongs to the field of construction, and relates to a hollow cell structure and a method for preparing porous concrete, in particular to a hollow cell structure and a method for preparing explosion-proof porous concrete with a negative Poisson's ratio effect. Background technique [0002] In recent years, domestic and international explosions have emerged one after another. The most direct measure against personal and property damage caused by explosive loads is to design effective explosion-proof materials for infrastructure. However, the design concept of traditional concrete is mainly to improve its own strength, which cannot play a positive role in the dredging of the explosion process and the elimination of energy transfer. From the perspective of mechanics, the basic problem of explosion is energy rather than force. Therefore, when the load strength exceeds the strength critical value, traditional concrete realizes energy release...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B20/00C04B111/40
CPCC04B20/002C04B28/04C04B2111/40C04B24/24C04B22/002
Inventor 马衍轩张颖锐姜能栋涂宏宇郝奕博敖翔胜殷晓彬
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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