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Preparation method and application of nano glass fiber reinforced concrete material

A technology of nano-glass fiber and reinforced concrete, which is applied in the field of concrete materials, and can solve the problems of inconvenient production process, increased component cost, and decreased productivity.

Inactive Publication Date: 2011-08-31
NANJING BEILIDA NEW MATERIAL SYST ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But will "TiO 2 - "cement" mixture is used as cementitious material for integral (reinforced) concrete poured in place, which is a waste of "active components"
Manufacture of precast concrete can be done simply by adding TiO to the surface layer 2 method, but this method requires a more complex and inconvenient production process, which increases the cost of components and reduces productivity
Covering the concrete surface with an "active" surface layer will have unavoidable problems such as the reliability and durability of the surface layer, and it will involve the bonding between the surface layer and the bottom layer, and it will also prolong the construction process and reduce productivity.

Method used

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  • Preparation method and application of nano glass fiber reinforced concrete material
  • Preparation method and application of nano glass fiber reinforced concrete material
  • Preparation method and application of nano glass fiber reinforced concrete material

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A preparation method of nano glass fiber reinforced concrete material (e-GRC functional material) with self-cleaning function, see figure 1 , the method includes the following steps:

[0027] 1) Selection and modification of nano-titanium dioxide; nano-titanium dioxide is mixed with rutile type and anatase type in a weight ratio of 50 to 30; the particle size of nano-titanium dioxide is between 10-20 nanometers, and the nano-titanium dioxide powder is heat-treated. Calcining at 500°C for 2 hours, adding non-metallic ion N modified titanium dioxide to obtain modified nano titanium dioxide powder;

[0028] 2) Dispersion of nano-titanium dioxide; multi-stage dispersion process is adopted; first, the modified nano-titanium dioxide after heat treatment uses zirconia balls as the grinding medium, and performs primary dispersion through wet ball milling to reduce the powder agglomeration phenomenon caused by heat treatment, and obtain nano Titanium dioxide slurry;

[0029] 3...

Embodiment 2

[0032] Another preparation method of nano glass fiber reinforced concrete material (e-GRC functional material) with self-cleaning function. Compared with Example 1, the method differs in that the nano-titanium dioxide is rutile type and anatase type by 20~ Mixing ratio of 25; the particle size of nano-titanium dioxide is between 5-10 nanometers, and calcined at 400 ° C for 2 hours. Dispersant weight percent 0.5%. The dispersant is acrylate.

Embodiment 3

[0034] Another preparation method of nano glass fiber reinforced concrete material (e-GRC functional material) with self-cleaning function, compared with Examples 1 and 2, the difference is that nano-titanium dioxide is rutile type and anatase type according to 80-75 ratio mixing; the particle size of nano-titanium dioxide is between 20-30 nanometers, and calcined at 600 ° C for 1 hour. The percentage by weight of the dispersant is 1%. The dispersing agent is polyethylene glycol.

[0035] The application of the nano glass fiber reinforced concrete material that a kind of above-mentioned preparation method obtains in building, see figure 2 , first prepare the nano-concrete slurry without glass fiber, and spray the extremely thin mist layer of the nano-concrete slurry without glass fiber into the mold to obtain a photocatalytic cement coating; then the reinforced cement material containing glass fiber It is sprayed out, mixed and sprayed with GRC special cement slurry, and th...

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Abstract

The invention discloses a preparation method and application of a nano glass fiber reinforced concrete material (e-GRC functional material). In the invention, a GRC material is used a photocatalysis carrier; TiO2 is used in glass fiber reinforced concrete; nano titanium dioxide is formed by mixing rutile and anatase at a ratio of (20:80)-(25:75); a multi-stage dispersion process is used; and fineglass fibers are substituted for steel bars in the traditional precast concrete, thus obtaining the nano glass fiber reinforced concrete material. The nano glass fiber reinforced concrete material has the self-cleaning function, can prevent and control air pollution, and is economical and practical. When being used in a building, the nano glass fiber reinforced concrete material can form a thin e-GRC coating on the surface layer of the building, thereby achieving the purposes of environment protection and energy saving.

Description

technical field [0001] The invention relates to a concrete material, in particular to a preparation method and application of a nano glass fiber reinforced concrete material (e-GRC functional material) with self-cleaning function. Background technique [0002] When the particle size of a material is reduced to the nanometer level, new properties can often appear or its original properties can be improved. There have been many years of research on photocatalytic technology in the field of coatings and sanitary ceramics in China, but the research on photocatalytic technology using cement as a carrier is relatively rare. At present, photocatalytic nano-powders or coatings developed on the market are usually limited to use indoors or under ultraviolet light sources. Some enterprises or scientific research universities have prepared photocatalytic sprays that can be used in exterior walls, but they have a short service life and failure. Fast characteristics, does not have the lo...

Claims

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Application Information

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IPC IPC(8): C04B22/06C04B28/00C04B14/42
CPCC04B28/02
Inventor 熊吉如刘大礼周昌宝陶婷婷
Owner NANJING BEILIDA NEW MATERIAL SYST ENG
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