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

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...

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Problems solved by technology

However, in the field of construction, there is no relevant report about negative Poisson's ratio concrete, and its application in explosion-proof engineering is unheard of

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