Noctilucent water-permeable multifunctional brick capable of catalytically degrading automobile exhaust and manufacturing method of noctilucent water-permeable multifunctional brick

Abstract

The invention provides a noctilucent water-permeable multifunctional brick capable of catalytically degrading automobile exhaust and a manufacturing method of the noctilucent water-permeable multifunctional brick, and belongs to the technical field of solid waste recycling. The multifunctional brick comprises a covering layer and a water-permeable base layer, the water-permeable base layer is arranged on the lower portion of the covering layer, the thickness of the water-permeable base layer is 46-52 cm, and the water-permeable base layer is composed of geopolymers prepared from tailing barren rock, industrial byproduct gypsum and blast furnace slag; the thickness of the covering layer is 10-14 cm, and the covering layer is a photocatalytic oxidation and noctilucent layer and is formed by doping the water-permeable base layer material with coconut shell activated carbon loaded with modified nanoscale titanium dioxide and waste glass; anti-blocking grooves are reserved in the surface of the covering layer, and the water guide pipe penetrates through the covering layer and the permeable base layer. The multifunctional brick does not need to be fired, the water permeable brick prepared after compression molding and constant-temperature maintenance is large in porosity, good in water permeability and multipurpose, reduces noise, catalyzes and degrades automobile exhaust in the daytime and reflects light at night for illumination, energy conservation and emission reduction can be achieved, solid waste is efficiently recycled, and the application prospect is wide.

Description

technical field

[0001] The invention relates to the technical field of solid waste recycling, in particular to a luminous water-permeable multifunctional brick capable of catalytically degrading automobile exhaust gas and a preparation method thereof. Background technique

[0002] At present, the bricks used for pavement are mostly impermeable materials such as granite, cement and asphalt. At the same time, the inability of rainwater to infiltrate causes waste of water resources, and also causes a great burden to the urban drainage system. Therefore, the construction of a sponge city is imminent, and the development of permeable bricks is a top priority.

[0003] In urban road construction, bricks for sidewalks are in great demand. However, the current brick-making process mostly adopts high-temperature sintering, which consumes a lot of energy, which is not conducive to achieving the green energy-saving and emission-reduction goals of reducing the use of fossil energy and...

Examples

preparation example Construction

[0041] The preparation method of the luminous water-permeable multifunctional brick capable of catalytically degrading automobile exhaust gas comprises the following steps:

[0042] S1: Preparation of coconut shell activated carbon: take coconut shell carbonized material after carbonization at 550-650 ℃ for 50-70min as raw material, pulverize and sieve to a particle size of 160-200mm, and use KOH solution with a mass fraction of 40-60% As an activator, after the two are mixed to carry out the activation reaction, pyrolyzed at 350 to 500 ° C for 110 to 130 min to obtain coconut shell activated carbon, and the specific weight proportioning range is: based on the coconut shell carbonized material of 100 parts by weight, KOH The solution is 50-80 parts by weight;

[0043] S2: Preparation of modified nanoscale titanium dioxide: Mix the fully substituted N-trialkylpolysaccharide quaternary ammonium salt and lactic acid, add 4 to 6 times the total weight of water, and heat and stir a...

Embodiment 1

[0052] 1) Preparation of coconut shell activated carbon: take the coconut shell carbonized material after carbonization at 600 ° C for 60min as the raw material, pulverize and sieve to a particle size of 180mm, and use a KOH solution with a mass fraction of 50% as an activator, the two are mixed to carry out. After the activation reaction, pyrolysis 120min at 450 DEG C to obtain coconut shell activated carbon, and the specific weight proportioning range is: based on the coconut shell carbonization material of 100 parts by weight, the KOH solution is 60 parts by weight; Potassium has a strong electron donating ability. When it diffuses into the micropores, it will react with carbon-containing substances to form complex salts, which decompose into potassium and carbon at high temperature. The specific surface area of ​​the prepared coconut shell activated carbon is 2809m 2 / g, the total pore volume is 1.798cm 3 / g.

[0053] 2) Preparation of modified nano-scale titanium dioxid...

Embodiment 2

[0061] The same procedure and raw materials as in Example 1 were used. The modulus of water glass is 1.0, and the permeable base layer is configured. The specific quality is: 720g of tailings waste rock, 90g of industrial by-product gypsum, and 80g of geopolymer. The covering layer is configured, and the specific mass is: 180g of tailings waste rock, 22.5g of industrial by-product gypsum, 13.5g of waste glass particles in 20g of geopolymer, and 6.3g of coconut shell activated carbon loaded with modified nanoscale titanium dioxide. Press molding, demoulding, and curing waste bricks. The performance indicators of the test all meet the requirements of the permeable brick standard for the building materials industry of the People's Republic of China (JCT945-2005), and have the functions of catalytic degradation of automobile exhaust, night lighting, noise reduction and other functions (see Table 1).

technical field

[0001] The invention relates to the technical field of solid waste recycling, in particular to a luminous water-permeable multifunctional brick capable of catalytically degrading automobile exhaust gas and a preparation method thereof. Background technique

[0002] At present, the bricks used for pavement are mostly impermeable materials such as granite, cement and asphalt. At the same time, the inability of rainwater to infiltrate causes waste of water resources, and also causes a great burden to the urban drainage system. Therefore, the construction of a sponge city is imminent, and the development of permeable bricks is a top priority.

[0003] In urban road construction, bricks for sidewalks are in great demand. However, the current brick-making process mostly adopts high-temperature sintering, which consumes a lot of energy, which is not conducive to achieving the green energy-saving and emission-reduction goals of reducing the use of fossil energy and...

Examples

preparation example Construction

[0041] The preparation method of the luminous water-permeable multifunctional brick capable of catalytically degrading automobile exhaust gas comprises the following steps:

[0042] S1: Preparation of coconut shell activated carbon: take coconut shell carbonized material after carbonization at 550-650 ℃ for 50-70min as raw material, pulverize and sieve to a particle size of 160-200mm, and use KOH solution with a mass fraction of 40-60% As an activator, after the two are mixed to carry out the activation reaction, pyrolyzed at 350 to 500 ° C for 110 to 130 min to obtain coconut shell activated carbon, and the specific weight proportioning range is: based on the coconut shell carbonized material of 100 parts by weight, KOH The solution is 50-80 parts by weight;

[0043] S2: Preparation of modified nanoscale titanium dioxide: Mix the fully substituted N-trialkylpolysaccharide quaternary ammonium salt and lactic acid, add 4 to 6 times the total weight of water, and heat and stir a...

Embodiment 1

[0052] 1) Preparation of coconut shell activated carbon: take the coconut shell carbonized material after carbonization at 600 ° C for 60min as the raw material, pulverize and sieve to a particle size of 180mm, and use a KOH solution with a mass fraction of 50% as an activator, the two are mixed to carry out. After the activation reaction, pyrolysis 120min at 450 DEG C to obtain coconut shell activated carbon, and the specific weight proportioning range is: based on the coconut shell carbonization material of 100 parts by weight, the KOH solution is 60 parts by weight; Potassium has a strong electron donating ability. When it diffuses into the micropores, it will react with carbon-containing substances to form complex salts, which decompose into potassium and carbon at high temperature. The specific surface area of ​​the prepared coconut shell activated carbon is 2809m 2 / g, the total pore volume is 1.798cm 3 / g.

[0053] 2) Preparation of modified nano-scale titanium dioxid...

Embodiment 2

[0061] The same procedure and raw materials as in Example 1 were used. The modulus of water glass is 1.0, and the permeable base layer is configured. The specific quality is: 720g of tailings waste rock, 90g of industrial by-product gypsum, and 80g of geopolymer. The covering layer is configured, and the specific mass is: 180g of tailings waste rock, 22.5g of industrial by-product gypsum, 13.5g of waste glass particles in 20g of geopolymer, and 6.3g of coconut shell activated carbon loaded with modified nanoscale titanium dioxide. Press molding, demoulding, and curing waste bricks. The performance indicators of the test all meet the requirements of the permeable brick standard for the building materials industry of the People's Republic of China (JCT945-2005), and have the functions of catalytic degradation of automobile exhaust, night lighting, noise reduction and other functions (see Table 1).

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