UHPC/foamed aluminum anti-explosion composite structure and preparation method thereof

Abstract

The invention discloses a UHPC / foamed aluminum anti-explosion composite structure and a preparation method thereof, and belongs to the technical field of structure protection. According to the anti-explosion composite structure, spherical or irregular foamed aluminum with the size of 10-12 mm is used as coarse aggregate, and cement, silica fume, slag, sand, steel fibers and other raw materials are used for preparing an ultra-high-performance cement-based composite foamed aluminum material. The anti-explosion composite structure is mainly used for resisting the damage depth caused by the shock wave combined load effect, due to the existence of the foamed aluminum which is light, high in strength and excellent in compression energy absorption characteristic, a projectile body can be fractured, deflected or deformed to lose efficacy in the shock wave penetration process, reflection of shock waves is facilitated in the explosion damage process, and the anti-explosion effect of the projectile body is improved. And the damage depth caused by explosion shock waves is greatly reduced. A series of problems of poor toughness, large dead weight, poor energy absorption effect and the like of the existing functional gradient anti-explosion composite panel are solved.

Description

technical field [0001] The invention relates to an ultra-high performance concrete anti-explosion composite structure, in particular to a UHPC / foam aluminum anti-explosion composite structure and a preparation method thereof. Background technique [0002] As populations increased, competition for dwindling resources intensified, and the risk of large-scale wars increased. In order to protect people's life safety and property safety and reduce the hazards of emergencies, how to improve the anti-penetration and anti-explosion capabilities of protective engineering and civil buildings, and how to optimize the protective structure have become urgent problems to be solved. [0003] In recent years, people have realized in production and life that soft materials such as foamed concrete, foamed aluminum materials, and EPS (polystyrene foam) concrete can effectively absorb explosion shock waves and can be used to improve the anti-blast performance of structures, but a single The us...

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Problems solved by technology

[0006] In order to solve a series of problems such as insufficient toughness of the anti-explosion composite panel structure in the prior art, large self-weight, poor energy absorption effect, etc., the present invention provides a UHPC / foam aluminum anti-explosion composite structure

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