Ultrahigh-strength steel quick-setting concrete polyurea composite material as well as preparation method and application thereof

Abstract

The invention relates to an ultrahigh-strength steel quick-setting concrete polyurea composite material as well as a preparation method and application thereof. The ultrahigh-strength steel quick-setting concrete polyurea composite material comprises a high-strength self-flowing concrete layer, wherein anti-explosion steel plates are compounded on the two sides of the high-strength self-flowing concrete layer respectively, and lead alloy thin plates are compounded on the outer sides of the two anti-explosion steel plates respectively; each surface of the ultrahigh-strength steel quick-setting concrete polyurea composite material is coated with a polyurea coating with the thickness of 6-8 mm; the high-strength self-flowing concrete is prepared from the following raw materials in parts by weight: 25 to 30 parts of cement, 65 to 75 parts of aggregate, 0 to 5 parts of a mineral admixture, 1 to 3 parts of steel fibers, 0.1 to 0.3 part of an additive, 0.5 to 1.5 parts of an expanding agent, 0.1 to 0.3 part of a coagulant and 6 to 6.8 parts of water. The ultrahigh-strength steel quick-setting concrete polyurea composite material has the excellent characteristics of preventing high-strength and high-power bullets, high bending resistance, tensile strength, stripping resistance, high elasticity, energy absorption, wave absorption, explosion-proof explosive fragments, high-speed splashing secondary damage of concrete fragments, nuclear radiation and shock wave prevention and the like, and is suitable for being widely applied to emergency repair projects of explosion-proof walls, national defense facilities and military airport grounds.

Description

technical field [0001] The invention relates to the technical field of concrete and its preparation technology, in particular to an ultra-high-strength steel quick-setting concrete polyurea composite material and its preparation method and its application in explosion-proof walls, national defense nuclear radiation protection, and ground emergency repair facilities of military airports. Background technique [0002] At present, with the rapid development of national defense and military technology, the explosive power of bombs continues to increase, which puts forward higher requirements for the performance of concrete, and requires the realization of green concrete building materials, saving resources and energy, sustainable development, and environmental friendliness Good for the environment. [0003] With the continuous development of scientific and technological progress, improving the performance of military special bulletproof walls is the key to improving defensive op...

AI Technical Summary

Problems solved by technology

Due to the needs of military work and combat, the walls destroyed by shells need to strengthen the ability to prevent nuclear radiation, requiring fast construction speed, high early strength, self-flowing high strength and vibration-free, etc., but currently there are slow construction speed, low early strength, and problems during construction. Vibration noise pollution, the concrete at the corner of the explosion-proof wall is difficult to achieve compaction and other problems

Images