A kind of fire-free permeable brick and its preparation method

A technology of permeable bricks and cement, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of wasting coal resources, destroying land, increasing preparation costs, etc., to save coal resources and improve slip resistance , the effect of alleviating urban drainage pressure and heat island effect

Active Publication Date: 2015-10-07
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned permeable bricks use solid waste fly ash as the main raw material, but they need to be sintered during the preparation process, and clay is used as the binder, which wastes a lot of coal resources and destroys land.
Patent 201220733300.7 introduces a double-layer permeable brick using slag and desert sand as aggregates. The upper layer of the permeable brick is a desert sand layer formed by mixing and pressing desert sand and water-based polymer binder; The inorganic material layer formed by mixing and pressing slag, water and Portland cement makes full use of waste slag, but the binder used is one or a combination of water-based epoxy resin, polyvinyl acetate resin, and polyvinyl alcohol, which belongs to Polymer materials, greatly increasing the cost of preparation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh the same amount of NaOH, Na 2 SiO 3 9H 2 A total of 18g of O was put into a beaker, added an appropriate amount of water, and stirred to obtain completely dissolved; according to the mass ratio of different particle sizes 30 mesh: 40 mesh: 50=1:1:1, weigh 72g of desulfurization slag and 90g of cement.

[0019] Put the desulfurization slag and cement into the cement slurry mixer container and stir evenly, add fully dissolved NaOH, Na 2 SiO 3 9H 2 O solution, continue to stir evenly, so that the desulfurization slag, cement and solution are evenly mixed. A cuboid experimental brick of 94*46*22mm is made by compression molding. The formed experimental bricks were cured for 28 days in a humid environment and at room temperature. Test the water permeability and compressive performance of the experimental bricks. The test results show that the compressive strength is 41.09MPa and the water permeability is 0.0156cm / s.

Embodiment 2

[0021] Weigh the same amount of NaOH, Na 2 SiO 3 9H 2 A total of 12.6g of O was put into a beaker, added an appropriate amount of water, and stirred to obtain completely dissolved; according to the mass ratio of different particle sizes 30 mesh: 40 mesh: 50=4:1:1, weigh 78g of desulfurization slag and 90g of cement.

[0022] Put the desulfurization slag and cement into the cement slurry mixer container and stir evenly, add fully dissolved NaOH, Na 2 SiO 3 9H 2 O solution, continue to stir evenly, so that the desulfurization slag, cement and solution are evenly mixed. A cuboid experimental brick of 94*46*22mm is made by compression molding. The formed experimental bricks were cured for 32 days in a humid environment and at room temperature. Test the water permeability and compressive performance of the experimental bricks. The test results show that the compressive strength is 40.68MPa and the water permeability is 0.0261cm / s.

Embodiment 3

[0024] Weigh the same amount of NaOH, Na 2 SiO 3 9H 2 A total of 7.5g of O was put into a beaker, added an appropriate amount of water, and stirred to obtain completely dissolved; according to the mass ratio of different particle sizes 30 mesh: 40 mesh: 50=3:1:1, weigh 83g of desulfurization slag and 90g of cement.

[0025] Put the desulfurization slag and cement into the cement slurry mixer container and stir evenly, add fully dissolved NaOH, Na 2 SiO 3 9H 2 O solution, continue to stir evenly, so that the desulfurization slag, cement and solution are evenly mixed. A cuboid experimental brick of 94*46*22mm is made by compression molding. The formed experimental bricks were cured for 30 days in a humid environment and at room temperature. Test the water permeability and compressive performance of the experimental bricks. The test results show that the compressive strength is 40.59MPa and the water permeability is 0.0192cm / s.

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Abstract

The invention discloses an unfired water-permeable brick and a preparation method thereof and belongs to the technical field of preparation of floor bricks. The water-permeable brick takes desulfurization slag as aggregate, takes cement as a reinforcing agent and a binder and takes Na2SiO3*9H2O and NaOH as activators; the desulfurization slag, the cement, the NaOH and the Na2SiO3*9H2O with different size fractions are evenly mixed in a certain proportion and placed in a model to be solidified and formed at the normal temperature; the unfired water-permeable brick which is high in water permeability, good in water retention, high in strength, anti-skid and abrasion-resistant is prepared through curing treatment.

Description

technical field [0001] The invention belongs to the technical field of floor tile preparation, and in particular relates to a fire-free permeable brick and a preparation method thereof. Background technique [0002] Desulfurization slag is the waste slag produced in the desulfurization process of circulating fluidized bed (CFB) boilers. Because of its large particles, it settles to the bottom of the furnace due to insufficient wind speed to fluidize it, and can be obtained through the slag outlet. Desulfurization slag is an industrial waste, and it is one of the industrial wastes with a large discharge volume in my country. Desulfurization slag is a resource that has been misplaced, and the rational use of desulfurization slag is an urgent problem to be solved. [0003] Traditional permeable bricks are mostly made of ordinary gravel into porous concrete, or more advanced polymer fiber concrete permeable bricks, ecological sand-based permeable bricks, etc. At present, the r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B18/04
CPCY02W30/91
Inventor 罗绍华沈惠良张洪友于金冉黄晓东何玮淑王欣刘广
Owner NORTHEASTERN UNIV LIAONING
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