Three-dimensional spacer fabric reinforced cement-based composite material and preparation method thereof

A technology of cement-based materials and spacer fabrics, which is applied to manufacturing tools, surface layering devices, ceramic molding machines, etc., can solve the problems of low flexural strength, high brittleness, easy cracking, etc. good effect

Inactive Publication Date: 2017-01-11
TIANJIN POLYTECHNIC UNIV
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Problems solved by technology

[0005] Technical problem: In order to solve the problems of high brittleness, easy cracking and low flexural strength of cement-based materials, the present invention proposes a method of reinforcing cement-based materials with three-dimensional spacer fabric composite resin, and prepares a kind of high-strength, difficult-to-crack, durable Corrosion, strong deformation resistance, cement-based composite material with excellent overall performance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Three-dimensional spacer fabric reinforced cement-based composite material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0029] Step 1: Select raw materials. The three-dimensional spacer fabric is woven from PET fibers with a thickness of 20mm; the resin used is unsaturated polyester resin; the cementitious material is 42.5R Portland cement, and the admixture is naphthalene-based water reducer. The water-cement ratio is 0.54, and the mass ratio of cement to water reducer is 100:1.2.

[0030] Step 2: Put the three-dimensional spacer fabric into the mold, fix the shape in the mold, and use the resin transfer molding technology to compound the three-dimensional spacer fabric with the resin to obtain the skeleton of the three-dimensional spacer fabric composite material.

[0031] The third step: mix and stir the cement cementitious material, water and admixture in proportion, and pour it into the skeleton of the three-dimensional spacer fabric composite material obtained in the second step.

[0032] Step 4: Oscillate the mold to fully fill the three-dimensional spacer fabric with the mixed slurry. ...

Embodiment 2

[0039] Step 1: Select raw materials: the three-dimensional spacer fabric is woven from glass fiber with a thickness of 15mm; the resin used is epoxy resin; the cement-based material is foamed concrete, the cementitious material is sulphoaluminate cement, and the foaming agent is hydrogen peroxide , the admixture is a naphthalene-based water reducer and a foam stabilizer. The bulk density of the designed foam concrete is 300kg / m3, and the water-cement ratio is 0.54.

[0040] Step 2: Put the three-dimensional spacer fabric into the mold, fix the shape in the mold, and use the resin transfer molding technology to compound the three-dimensional spacer fabric with the resin to obtain the skeleton of the three-dimensional spacer fabric composite material.

[0041] Step 3: Mix and stir the cement gelling material, water, water reducing agent and foam stabilizer in proportion to form a uniform slurry; Spacer fabric composite skeleton.

[0042] Step 4: Oscillate the mold to fully fil...

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Abstract

The invention provides a three-dimensional spacer fabric reinforced cement-based composite material and a preparation method thereof and relates to a cement-based composite material. The preparation method comprises the following steps: putting a three-dimensional spacer fabric into a mold, and compositing resin with the three-dimensional spacer fabric by virtue of a resin transfer molding technique; curing the resin, so as to obtain a three-dimensional spacer fabric composite material skeleton; and uniformly mixing and stirring a cement binding material, water and an additive, pouring the mixture into the three-dimensional spacer fabric composite material skeleton, and carrying out compacting, hardening and maintenance forming, so as to obtain the three-dimensional spacer fabric reinforced cement-based composite material. According to the preparation method, composite material skeletons of various shapes can be obtained by virtue of the compositing of the three-dimensional spacer fabric and the resin and can be produced into building components of various shapes through cement pouring and solidification. Furthermore, the cement-based composite material has the advantages that the strength of common concrete is greatly improved, the construction is simple and convenient, and the performance is excellent.

Description

technical field [0001] The invention relates to the technical field of building components, in particular to a three-dimensional spacer fabric reinforced cement-based composite material and a preparation method thereof. Background technique [0002] Cement-based materials have the characteristics of high compressive strength, good corrosion resistance, heat resistance, fire resistance, and low price. They are widely used in the field of civil engineering, but the brittleness of cement-based materials makes them unsatisfactory in terms of flexural strength and tensile strength. , prone to cracks, seriously affecting the durability and safety of cement-based materials. [0003] Traditional cement-based reinforcement mainly uses steel bars as reinforcement materials. Although reinforced concrete using steel bars as reinforcement materials improves the tensile and flexural properties of concrete, the further use of reinforced concrete is limited because steel bars are not corro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B14/38C04B16/06
CPCB28B11/003B28B19/0092B28B23/0006
Inventor 吴晓青肖沅谕魏俊富
Owner TIANJIN POLYTECHNIC UNIV
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