Composite board and manufacturing method thereof

A composite board and board technology, applied in the field of composite board and its production, can solve the problems of no application example of sandwich board, no board design method, large crack spacing, etc., and achieve light weight, simple construction, and large bearing capacity. Effect

Active Publication Date: 2013-12-11
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the fine concrete used is highly brittle, and the interface between it and the insulation material is weak, and it is easy to peel off when faced with external force, and there is no specific design method for the plate in the patent
[0005] The patent application with the application number 200510046878.X discloses a method of combining short fibers of non-metallic fiber woven net to reinforce cement-based composite materials. The ability of cracks, non-metallic fiber braided mesh is used as the main stiffener to bear the load, and it can also make

Method used

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  • Composite board and manufacturing method thereof
  • Composite board and manufacturing method thereof
  • Composite board and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Embodiment 1: The board includes: fiber woven net, chopped fiber, fine concrete and thermal insulation material. details as follows:

[0060] 1. Fiber woven mesh: It is made of fibers with high tensile strength and good corrosion resistance. The fibers include: carbon fiber, aramid fiber, alkali-resistant glass fiber, basalt fiber, polyvinyl alcohol fiber or polyethylene fiber; One kind of fiber is woven into a net or two kinds of different fibers are woven into a net in the radial direction and the weft direction respectively; epoxy resin, curing agent and diluent are used to solidify the woven net, and the mass ratio of the epoxy resin, curing agent and diluent is 65~70: 60~80: 30~35, the sand is silica sand.

[0061] 2. Fine concrete: In order to make the concrete penetrate through the fiber woven mesh smoothly, form a good bond with it, avoid holes, reduce the difficulty of construction, and have high fluidity and self-compacting ability without segregation, the co...

Embodiment 2

[0077] Embodiment 2: make the discontinuous pouring method of plate, comprise two parts:

[0078] Among them, the first part of the method, the specific steps are as follows:

[0079] 1. Calculate the total area of ​​the required fiber woven net according to the design;

[0080] 2. According to the size of the design plate and the crack limit requirements, determine the reasonable mesh size of the fiber woven mesh and the number of layers to be arranged (take two layers as an example).

[0081] 3. Mix epoxy resin, curing agent and thinner according to the ratio of 65-70:60-80:30-35. After it is fully mixed, manually use a brush to paint the mixture evenly on the fiber woven net. Surface (coated on both sides), to ensure the impregnation of epoxy resin into the fiber roving and the uniformity of impregnation, and finally scrape off the excess mixture on the surface. After the surface of the woven fiber mesh is evenly covered with epoxy resin, apply fine sand evenly on the sur...

Embodiment 3

[0090] Example 3: Taking the double-layer network as an example, design a sandwich panel composed of fiber reinforced concrete and thermal insulation materials of 1500mm×400mm×30mm. The environmental category is Class I, and the concrete grade is C50. The maximum bending moment is 1.5kN·m.

[0091] Calculate required material usage:

[0092] In this design, glass fiber woven mesh is used, and its tensile strength is f t =3200Mpa, the ultimate tensile strain is ε u =0.045, the compressive strength of concrete is f c =23.1Mpa, bring the existing data into the formula:

[0093] f t A t =f c bh c

[0094] M u = f c bh c ( h 0 - h c 2 )

[0095] After calculation, the total cross-sectional...

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Abstract

The invention discloses a composite board and a manufacturing method thereof, and belongs to composite boards of building materials and design and manufacturing methods of the composite boards. The composite board comprises fiber woven nets, chopped fiber, fine concrete and an insulating material. The composite board is designed based on certain hypothesis. The manufacturing method of the composite board comprises the following steps: 1, mixing and stirring an epoxy resin, a curing agent and a diluting agent according to a ratio, and uniformly coating the mixture on the surface of a fiber woven net; 2, fixing a wooden template, firstly stirring cement, coal ash, silica ash and silica sand, subsequently adding water to stir, adding a water reducing agent, stirring, adding the chopped fiber, and further stirring; 3, firstly casting the stirred fine concrete on the template, subsequently laying another fiber woven net, further casting the fine concrete and laying another fiber woven net; 4, casting the fine concrete on the fiber woven nets, and laying the insulating plate which is subjected to surface roughening treatment; 5, casting the fine concrete on the roughened insulating plate, laying another fiber woven net, further casting the fine concrete, laying another fiber woven net and further casting the fine concrete; 6, demolding and maintaining. The composite board has the advantages that the weight is light, the thickness is large, the bearing capacity is large, and the construction is simple.

Description

technical field [0001] The invention relates to a composite board of building materials and a manufacturing method thereof, in particular to a composite board and a manufacturing method thereof. technical background [0002] Sandwich composite panels have become a new type of building material with the fastest development due to their excellent working performance and low cost. It has the advantages of light weight, high strength and good heat preservation effect. A common sandwich panel structure consists of a structural load-bearing surface, an insulating layer, and an outer surface. The outer surface of the panels has little structural function and reinforcement must be added to withstand the restraint forces induced by shrinkage deformation due to temperature and shrinkage. At present, the main process of sandwich composite panels commonly used at home and abroad is to weld iron wires into a space skeleton, and fill the middle with insulation boards. [0003] However,...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B14/38C04B14/42C04B16/06
Inventor 尹世平王波
Owner CHINA UNIV OF MINING & TECH
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