Anti-explosion porous concrete with negative poisson's ratio effect and preparation method thereof

Abstract

The invention discloses an anti-explosion porous concrete with a negative poisson's ratio effect. The anti-explosion porous concrete is of a communicating hole structure or an inner concave hole structure. The anti-explosion porous concrete is prepared from the following several ingredients: a cementing material, a water reducing agent, an exciting agent, foam stabilizes and a foaming agent, wherein through being metered in parts by weight, the use quantity of the foaming agent is 3 to 14 percent of the cementing material; the weight ratio of the foaming agent to the foam stabilizes is 0.6 to 4.2. The invention also discloses a preparation method of the anti-explosion porous concrete with the negative poisson's ratio effect. The porous concrete with the communicating hole structure and the inner concave hole structure is prepared; the poisson's ratio value of the communicating hole structure to the poisson's ratio value of the inner concave hole structure is 0.21 and 0.90. Compared with the ordinary porous steel bar concrete with the hole closing structure, the anti-explosion porous concrete has the advantages that the energy storage modulus is respectively improved by 261 percent and 372 percent, so that the capability of resisting and absorbing explosion load energy is greatly improved; the original structure is maintained not to be destroyed to the great degree.

Description

technical field

[0001] The invention belongs to the field of construction, and relates to a porous concrete and a preparation method thereof, in particular to an anti-explosion functional porous concrete with a negative Poisson's ratio effect and a preparation method thereof. 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 by directly releasin...

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