Photocatalytic self-cleaning type water permeable brick and preparation method thereof

A photocatalytic and self-cleaning technology, which is applied to clay products, other household utensils, pavements paved with prefabricated blocks, etc., can solve the problems of waste, large titanium dioxide, and no photocatalysis, so as to reduce waste, Effects of cost saving and good environmental coordination

Pending Publication Date: 2017-09-08
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is a large waste of titanium dioxide in this single-layer permeable brick, because the photocatalytic substance needs to absorb light before it can photodegrade. In the permeable brick, only the titanium dioxide on the surface can receive sufficient light. Most of the titanium dioxide in it does not produce photocatalysis because it does not have light conditions.

Method used

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  • Photocatalytic self-cleaning type water permeable brick and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1-2.5mm ceramic waste particles, natural vanadium-containing rutile powder, kaolin, potassium albite feldspar, and water glass solution with a mass concentration of 25%, and the ratio is 70:10:5:5:10 by weight and mixed evenly. Made into a photocatalytic surface layer compound.

[0028] 3-5mm ceramic waste particles, kaolin, potassium albite feldspar, and water glass solution with a mass concentration of 25% are mixed uniformly in a weight ratio of 80:5:5:10 to make a matrix layer mixture.

[0029] When the above-mentioned mixture is pressed into adobe, two times of distribution are used, and one time is pressed into shape, that is, the metal mold is first filled with a photocatalytic surface layer mixture of 8mm; Pressure 25MPa. The pressed bricks were dried at 150°C for 12 hours, then fired at 1100°C for 2 hours, and naturally cooled to obtain a natural mineral photocatalytic self-cleaning permeable brick with a pore gradient structure. The performance indicators of...

Embodiment 2

[0031] 1-2.5mm ceramic waste particles, natural vanadium-containing rutile powder, kaolin, potassium albite feldspar, water glass solution with a mass concentration of 25%, and the proportions are 70:12:4:4:10 by weight and mixed evenly. Made into a photocatalytic surface layer compound.

[0032] 3-5mm ceramic waste particles, kaolin, potassium albite feldspar, and water glass solution with a mass concentration of 25% are mixed uniformly in a weight ratio of 82:4:4:10 to make a matrix layer mixture.

[0033] When the above-mentioned mixture is pressed into adobe, two times of distribution are used, and one time is pressed to form, that is, the metal mold is first filled with a photocatalytic surface layer mixture of 5 mm; Pressure 20MPa. The pressed bricks were dried at 110°C for 8 hours, then fired at 900°C for 1 hour, and cooled naturally to obtain a natural mineral photocatalytic self-cleaning permeable brick with a pore gradient structure. The performance indicators of p...

Embodiment 3

[0035] 1-2.5mm refractory waste particles, natural vanadium-containing rutile powder, kaolin, potassium albite feldspar, and water glass solution with a mass concentration of 25%, the ratio is 70:10:5:5:10 by weight and mixed evenly , made of photocatalytic surface layer mixture.

[0036] 3-5mm refractory waste particles, kaolin, potassium albite feldspar, and water glass solution with a mass concentration of 25% are mixed uniformly in a weight ratio of 80:5:5:10 to make a matrix layer mixture.

[0037] When the above-mentioned mixture is pressed into brick adobe, two times of distribution are used, and one time is pressed to form, that is, the photocatalytic surface layer mixture is first filled in the metal mold 6mm; then the base layer mixture is filled on it, and then pressed and formed once Pressure 23MPa. After drying the pressed bricks at 120°C for 10 hours, they were fired at 1000°C for 1.5 hours, and naturally cooled to obtain a natural mineral photocatalytic self-cl...

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Abstract

The invention belongs to the technical field of constructional materials, and in particular relates to a photocatalytic self-cleaning type water permeable brick and a preparation method thereof. The photocatalytic self-cleaning type water permeable brick comprises a photocatalytic surface layer and a substrate layer, wherein the photocatalytic surface layer is prepared from inorganic solid waste particles, natural vanadiferous rutile powder, clay, potassium and sodium feldspar and a water glass solution, and the substrate layer is prepared from inorganic solid waste particles, clay, potassium and sodium feldspar and a water glass solution. The photocatalytic self-cleaning type water permeable brick has two obvious advantages: the natural vanadiferous rutile powder with a photocatalytic effect on organic matter degradation is substituted for industrial titanium pigment, and the natural mineral has the advantages of good environmental compatibility and environmental friendliness; and a porous gradient structural design is adopted, and the photocatalytic substance, namely the natural vanadiferous rutile powder, is added to only the upper surface layer of the water permeable brick body, thereby reducing waste of the photocatalytic substance and saving cost.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a photocatalytic self-cleaning permeable brick and a preparation method thereof. Background technique [0002] Permeable brick is a kind of urban permeable paving material developed in recent years, which is favored by municipal departments of various cities. With the rise and development of sponge city construction, the demand for permeable bricks is increasing. Materials have also gradually developed into ceramic permeable bricks, concrete permeable bricks, sand-based permeable bricks, steel slag permeable bricks, tailings permeable bricks, etc.; and gradually pay attention to the functionalization of permeable bricks, such as permeable bricks with photocatalytic function. Photocatalytic substances are added to the brick body to degrade the organic matter deposited in the pores of the brick body, thereby producing a certain self-cleaning effect and purif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/132E01C5/04E01C11/22
CPCC04B33/132C04B2235/3232C04B2235/3427C04B2235/3472E01C5/04E01C11/225Y02P40/60
Inventor 乐红志于克福
Owner SHANDONG UNIV OF TECH
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