Water-permeable brick with artificial carbonized steel slag pellets as aggregates and preparation method thereof

A carbonized steel slag and permeable brick technology, which is applied in the field of green building materials, can solve the problems of low water permeability, poor stability, and low steel slag content, and achieve high water permeability, qualified stability, and simple preparation process.

Active Publication Date: 2018-11-09
DALIAN UNIV OF TECH
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  • Claims
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Problems solved by technology

[0005] In order to solve the technical problems of the current steel slag permeable bricks such as poor stability, low water permeability, and low steel slag content, the present invention provides a combination of carbonization process to eliminate the volume stability of steel slag, using artificial carbonized steel slag balls as aggregates, steel slag powder or Eco-friendly permeable brick with large amount of steel slag mixed with steel slag cement composite powder or epoxy resin as cementing material and preparation method thereof

Method used

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  • Water-permeable brick with artificial carbonized steel slag pellets as aggregates and preparation method thereof
  • Water-permeable brick with artificial carbonized steel slag pellets as aggregates and preparation method thereof

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Embodiment 1

[0026] Embodiment 1: This embodiment provides a preparation process for permeable bricks with high steel slag content. Taking the configuration of 1 cubic meter of steel slag permeable concrete as an example, the preparation method is: mix 537kg steel slag powder, 134kg water glass, and 268kg water by Stir evenly to form a slurry, the second step: sieve out 1880kg of carbonized steel slag ball aggregates with a gradation of 4.75-9.5mm and put them into the filter screen, then immerse in the slurry to make the spheres fully hang the slurry, lift it up, filter out the excess slurry and pour it Flatten into the mould. Step 3: Put 268kg of broken carbonized steel slag brick ≤ 4.75mm fine aggregate into the filter screen, then immerse in the slurry to make the sphere fully coated with slurry, then lift it up, filter out the excess slurry and spread it on the ball aggregate structure in the mold Compact and level. Place the formed mold in an indoor ventilated environment for 24 hou...

Embodiment 2

[0029] Embodiment 2: Its preparation method is: 565kg steel slag powder, 141kg cement, 282kg water are evenly formed into a slurry by stirring, the second step: screen out 1980kg of carbide steel slag ball aggregates with a gradation of 4.75-13.2mm and put them in the filter screen , and then dipped into the slurry to make the sphere fully hang the slurry, then lift it up, filter out the excess slurry, pour it into the mold and spread it flat. Step 3: Put 282kg of fine aggregate of broken carbonized steel slag bricks ≤ 4.75mm into the filter screen, then immerse in the slurry to make the ball fully coated with slurry, then lift it up, filter out the excess slurry and spread it on the ball aggregate structure in the mold Compact and level. Place the formed mold in an indoor ventilated environment for 24 hours until the optimum moisture content of carbonization curing is placed in the carbonization kettle, and 99.9% pure CO is introduced 2 , the carbonization pressure is 0.3MPa...

Embodiment 3

[0030] Embodiment 3: Its preparation method is: 537kg steel slag powder, 134kg water glass, 268kg water are evenly formed into a slurry by stirring, the second step: screen out 1880kg of carbide steel slag ball aggregates with a gradation of 4.75-9.5mm and put them into a filter screen Then immerse in the slurry to make the sphere fully hang the slurry, then lift it up, filter out the excess slurry, pour it into the mold and pave it flat. Step 3: Put 268kg of broken carbonized steel slag brick ≤ 4.75mm fine aggregate into the filter screen, then immerse in the slurry to make the sphere fully coated with slurry, then lift it up, filter out the excess slurry and spread it on the ball aggregate structure in the mold Compact and level. Place the formed mold in an indoor ventilated environment for 24 hours until the optimum moisture content of carbonization curing is placed in the carbonization kettle, and 99.9% pure CO is introduced 2 , the carbonization pressure is 0.3MPa, and a...

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Abstract

The invention provides a water-permeable brick with artificial carbonized steel slag pellets as aggregates and a preparation method thereof, belonging to the technical field of green building materials. The water-permeable brick comprises a base layer and a surface layer, wherein the surface layer is located on the base layer; the base layer is made of continuously graded artificial carbonized steel slag pellet aggregates; and the surface layer is made of fine aggregates obtained by crushing and sieving carbonized steel slag bricks and formed after filling and leveling of the fine aggregates.The water-permeable brick comprises the following components by weight: 60 to 70% of artificial carbonized steel slag pellet aggregates, 5 to 10% of the fine aggregates obtained by crushing and sieving carbonized and cured steel slag bricks and having a particle size of no more than 4.75 mm, 15 to 20% of steel slag micropowder, 4 to 5% of a reinforcing agent and 4 to 5% of tap water. According tothe invention, through large addition amount of steel slag, industrial waste residues are greatly consumed; meanwhile, industrial waste gas CO2 is used as a raw material in the process of carbonization and curing, and the reaction of the CO2 with steel slag products in a carbonization kettle is an exothermic reaction, so no external heat source is need; and the advantages of waste utilization, carbon sequestration, energy conservation, emission reduction, simple preparation process, low equipment requirements, short production cycle and low cost are obtained.

Description

technical field [0001] The invention belongs to the technical field of green building materials, and more specifically relates to a combined carbonization maintenance process, a permeable brick with artificial carbonized steel slag balls as aggregate and a preparation method thereof. Background technique [0002] In order for the city to be like a sponge, it has good "elasticity" in adapting to environmental changes and responding to natural disasters. When it rains, it absorbs, stores, infiltrates, and purifies water, and releases and uses the stored water when needed. The research and application of permeable concrete has also become a hot topic. At present, the comprehensive utilization rate of steel slag in my country is only about 20%, and the cumulative accumulation of steel slag in the country is nearly 1 billion tons. The disposal and accumulation of a large amount of steel slag not only occupies a large amount of land, but also pollutes soil, water resources, and ai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/26C04B28/00C04B38/00C04B40/02C04B20/02C04B18/02E01C11/22C04B18/14
CPCC04B18/02C04B20/023C04B20/026C04B28/00C04B28/26C04B40/0231C04B2111/00284C04B2201/50E01C11/225C04B18/142C04B38/0041Y02W30/91
Inventor 常钧于春阳
Owner DALIAN UNIV OF TECH
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