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Bulletproof explosion-proof brick with high content mixed fiber concrete and preparation method thereof

A technology of mixing fiber and concrete, which is applied in the field of building materials, can solve problems that have not been seen in small bulletproof and explosion-proof blocks

Inactive Publication Date: 2018-09-11
HUANGHE S & T COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are very few studies on the impact toughness of high-content hybrid fiber-reinforced concrete, and there are very few special studies on the anti-explosion and anti-penetration effects of it as a bulletproof and explosion-proof material. Research literature on small bulletproof and explosion-proof blocks developed from materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The high-content mixed fiber concrete bulletproof and explosion-proof brick of the present invention consists of corrugated steel fibers with a length of 15 mm, a diameter of 0.6 mm, and a tensile strength of 600 MPa to 700 MPa (the corrugated steel fibers produced by Yixing Junwei Metal Fiber Co., Ltd. ), polypropylene fiber (select polypropylene fiber produced by Yixing Junwei Metal Fiber Co., Ltd.), ordinary Portland cement (select Luoyang Huanghe brand P.O52.5 ordinary Portland cement), water (select drinking tap water ), sand with a fineness modulus of 2.8 (select natural medium sand from Yihe Beach in Luoyang, wash it with water, without soil), gravel with a particle size of 5mm-10mm (select river pebbles from Yihe Beach in Luoyang with good grading) , washed with water, without soil), silica fume (the brand name SF96 silica fume produced by Xinding Mineral Products Processing Factory in Lingshou County, Hebei Province is selected, which meets the requirements of "...

Embodiment 2

[0030] The high-content hybrid fiber concrete bulletproof and explosion-proof brick of the present invention consists of corrugated steel fibers with a length of 15 mm, a diameter of 0.6 mm, and a tensile strength of 600 MPa to 700 MPa, polypropylene fibers, ordinary Portland cement, water, and fineness. Sand with a modulus of 2.8, gravel with a particle size of 5 mm to 10 mm, silica fume, fly ash, and polycarboxylate-based high-performance water reducer, composed according to the following mass percentages:

[0031]Corrugated steel fiber 14.21%, polypropylene fiber 0.04%, cement 19.40%, water 5.60%, sand 17.50%, gravel 38.00%, silica fume 2.80%, fly ash 2.00%, superplasticizer 0.45%.

[0032] Described polypropylene fiber is made up of mixing three kinds of specifications of length 19mm, 12mm, 6mm, and the ratio of the polypropylene fiber mass portion of described three kinds of specifications is 5:3:2; Its performance index is: density 0.91g / cm 3 ,The single filament diamete...

Embodiment 3

[0039] The high-content hybrid fiber concrete bulletproof and explosion-proof brick of the present invention consists of corrugated steel fibers with a length of 15 mm, a diameter of 0.6 mm, and a tensile strength of 600 MPa to 700 MPa, polypropylene fibers, ordinary Portland cement, water, and fineness. Sand with a modulus of 2.8, gravel with a particle size of 5 mm to 10 mm, silica fume, fly ash, and polycarboxylate-based high-performance water reducer, composed according to the following mass percentages:

[0040] Corrugated steel fiber 14.21%, polypropylene fiber 0.04%, cement 19.80%, water 5.40%, sand 17.00%, gravel 38.50%, silica fume 2.60%, fly ash 2.00%, superplasticizer 0.45%.

[0041] Described polypropylene fiber is made up of mixing three kinds of specifications of length 19mm, 12mm, 6mm, and the ratio of the polypropylene fiber mass portion of described three kinds of specifications is 5:3:2; Its performance index is: density 0.91g / cm 3 ,The single filament diamet...

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Abstract

The invention discloses a high-content hybrid fiber concrete bulletproof and explosionproof brick. The brick is prepared from, by mass, 14.21% of steel fibers, 0.04% of polypropylene fiber, 19.00%-19.80% of cement, 5.40%-5.80% of water, 17.00%-18.00% of sand, 37.50%-38.50% of crushed stone, 2.60%-3.00% of silica fume, 2.00% of fly ash and 0.45% of efficient water reducing agent. The high-content hybrid fiber concrete bulletproof and explosionproof brick has the advantages that the brick body has excellent dynamic and static mechanical properties of compression resistance, tensile resistance, bending resistance, shock resisting penetration, shock resisting toughness and the like, and the purpose of resisting bullets and preventing an explosion are achieved.

Description

technical field [0001] The invention relates to the field of building materials, in particular to high-content mixed fiber concrete bulletproof and explosion-proof bricks and a preparation method thereof. Background technique [0002] The small bombs used by terrorists to create explosions are mainly hand grenades, grenades and various self-made small ammunition. After the explosion, the lethal killing radius of fragments is 5m~7m, and the lethal killing radius is 15m. It is lethal within 15m~20m, and the lethality drops sharply outside 25m. The safe distance is about 35m~40m, and the killing elements are hundreds or thousands. Steel balls with a diameter of 2.5mm to 3.0mm or dozens to hundreds of fragments with a mass of about 0.15g to 0.40g, and the initial velocity of the fragments is above 1500m / s. The firearms used by terrorists mainly include light weapons such as pistols, rifles and machine guns, such as Soviet-style AK-47, American-style M82A1 and so on. The main d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B16/06C04B14/48
CPCC04B14/48C04B16/0633C04B28/04C04B2201/50C04B14/06C04B14/02C04B18/146C04B18/08C04B2103/302
Inventor 孙杰付立彬邹怡菲李珊李楠刘文中刘秦师哲哲
Owner HUANGHE S & T COLLEGE
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