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Impact-resistant composite board and preparation method thereof

A technology of impact resistance and composite materials, applied in the direction of manufacturing tools, ceramic molding machines, etc., can solve the problems of debris splashing, poor explosion-proof impact resistance, wall cracking, etc. The effect of impact properties

Active Publication Date: 2017-01-04
HUNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the cost of steel structure explosion-proof walls is high, and reinforced concrete and brick explosion-proof walls have disadvantages such as poor explosion-proof and impact resistance, large floor space, etc., and explosions may cause the wall to break and debris to splash and other dangers

Method used

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  • Impact-resistant composite board and preparation method thereof

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Embodiment Construction

[0013] Below in conjunction with example the present invention is described in further detail:

[0014] The ratio of steel fiber reinforced cement-based materials is: ordinary portland cement: fly ash: silica fume: fine sand: water reducer: water = 1:0.8:0.2:0.8:0.01, the volume content of steel fiber is 1.5%, The length of the steel fiber used is 12-15 mm, the diameter is 0.18-0.23 mm, the tensile strength is 2850 MPa, and the modulus of elasticity is 200 GPa.

[0015] The ratio of PVA fiber reinforced cement-based materials is: ordinary portland cement: fly ash: fine sand: water reducer: thickener: water = 1:1:0.8:0.014:0.0007, the volume content of PVA fiber is 2% , wherein the length of the PVA fiber used is 12mm, the diameter is 0.039mm, the tensile strength is 1600MPa, and the modulus of elasticity is 48.4GPa.

[0016] The preparation method of steel fiber reinforced cement-based materials is to pour cement, fly ash, fine sand, and silica fume into a mixing pot, and dry...

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Abstract

The invention discloses an impact-resistant composite board and a preparation method thereof, and belongs to the technical field of building fences. The composite board comprises an impact-resistant material layer (1) and a toughening layer (2), wherein the impact-resistant material layer (1) of the board is made of a steel fiber-reinforced cement-based material; the toughening layer (2) is made of a PVA fiber-reinforced cement-based material; the impact-resistant material layer (1) and the toughening layer (2) are bonded by layered pouring. The impact-resistant composite board can effectively take the advantages of the steel fiber-reinforced cement-based material and the PVA fiber-reinforced cement-based material in an aspect of impact resistance, and has relatively high bearing capability and very strong energy-consuming capability, so that relatively good impact resistance is achieved.

Description

technical field [0001] The invention relates to an impact-resistant composite material plate and a preparation method thereof, belonging to the technical field of building protection. Background technique [0002] In recent years, as more and more buildings are damaged or collapsed due to car collisions and accidental explosions, the explosion-proof and impact-resistant performance of buildings has attracted more and more attention, especially in some important buildings, where there is a danger of explosion. In the buildings and building enclosure structures, effective measures must be taken to reduce the damage to the buildings caused by explosion or impact. The measures currently adopted are mainly to build explosion-proof walls. The explosion-proof walls are generally reinforced concrete structures, steel structures or brick structures. This type of explosion-proof walls can reduce the damage caused by explosion shock waves to buildings to a certain extent. However, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B14/48C04B16/06B28B1/087B28B1/16B28B1/29B28B1/52
CPCB28B1/087B28B1/16B28B1/29B28B1/523B28B1/525C04B14/48C04B16/0641C04B28/04C04B18/08C04B18/146C04B14/06C04B2103/302C04B22/002C04B2103/44
Inventor 周芬李春涛杜运兴
Owner HUNAN UNIV
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