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Fibre composite phosphor aluminate cement and method for preparing slurry and concrete

A technology for compounding aluminophosphate and aluminophosphate cement, which is applied in the field of inorganic materials, can solve the problems of low fracture energy, restrict the application of cement materials, and cannot be satisfied, and achieves performance improvement, excellent mechanical bonding and chemical compatibility. , the effect of strong adaptability

Inactive Publication Date: 2008-03-12
SHENZHEN UNIV
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the anti-deformation ability under tension or bending is very poor, showing brittle failure, that is, poor toughness, low fracture energy, and its impact resistance is correspondingly low.
And Portland cement paste has low early strength
These have caused the limitations of Portland cement and its concrete intrinsic properties and fiber composites.
In addition, most of the fiber-containing cement concrete used in construction is mixed with the required fibers on site when the concrete is prepared, which is detrimental to the stability of the concrete quality.
As a brittle material, fiber portland cement concrete and its products can no longer meet the requirements of some special occasions, and also restrict the application of cement materials

Method used

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  • Fibre composite phosphor aluminate cement and method for preparing slurry and concrete
  • Fibre composite phosphor aluminate cement and method for preparing slurry and concrete

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Experimental program
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Effect test

preparation example Construction

[0028] The preparation method of fiber composite aluminophosphate cement slurry of the present invention:

[0029] The dispersion of fibers in the cement matrix is ​​key. In the present invention, the fiber incorporation mode can have the following three types:

[0030] 1. Add the designed proportion of fiber evenly into the cement being stirred and dry mix. When using, add corresponding proportion of sand and water to mix and stir;

[0031] 2. Add the designed proportion of fiber to the corresponding proportion of cement and sand mixed evenly, and then add an appropriate proportion of water to mix and stir;

[0032] 3. Add the designed proportion of fiber into a certain proportion of water for mixing, then add the corresponding proportion of cement for mixing, and then add an appropriate proportion of sand for mixing and stirring.

Embodiment 1

[0033] Embodiment 1, polyester fiber aluminophosphate composite cement (the parts by weight of its components are):

[0034] 52.5 grade aluminophosphate cement: 97.20;

[0035] Polyester fiber (fiber length: 6mm): 2.80.

Embodiment 2

[0036] Embodiment 2, glass fiber aluminophosphate composite cement (the parts by weight of its components are):

[0037] 52.5 grade aluminophosphate cement: 98.00;

[0038] Glass fiber (fiber length: 6 mm): 2.00.

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Abstract

The present invention discloses a fiber composite phosphorus aluminate cement and preparation method for slurry and concrete. The fiber composite phosphorus aluminate cement is mainly composed of the phosphorus aluminate cement and the fiber and the weight percentage of the phosphorus aluminate cement ranges from 95.00 to 99.96, and the weight percentage of the fiber ranges from 0.04 to 5.00. Compared with the prior art, the fracture properties, impact resistance, mechanical properties such as anti-permeability, anti-shearing, etc., of the fiber composite phosphorus aluminate cement concrete of the present invention are obviously improved.

Description

[technical field] [0001] The invention belongs to the field of inorganic materials, and in particular relates to a cementitious material compounded with fibers capable of hydration and hardening, and a preparation method for slurry and concrete. [Background technique] [0002] Ordinary cement concrete is prone to cracks due to the structural defects of the material itself, which leads to structural damage under the action of external forces. In view of the problems of high brittleness, easy cracking and poor impact resistance of general concrete materials, scholars from various countries have carried out research on improving the toughness of concrete materials. There are mainly ultrafine powder toughening technology, fiber toughening technology and polymer compound technology. Due to the disadvantages of easy aging of polymer compounds, the research on fiber-reinforced concrete is relatively active. [0003] Fiber concrete is a cement-based composite material composed of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/32C04B12/02
CPCC04B28/06
Inventor 邢锋丁铸胡佳山刘飚李仕群
Owner SHENZHEN UNIV
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