Construction waste regenerated insulation brick and preparation method thereof

A technology of construction waste and thermal insulation bricks, which is applied in the field of resource utilization of construction waste, can solve the problems that affect the popularization and application of recycled thermal insulation bricks from construction waste, poor heat insulation effect, and cracked walls, so as to solve the problem of wall cracks and good Effect of heat insulation and heat preservation, strength improvement

Active Publication Date: 2019-08-13
湖南莲城机械化工程有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are relatively few studies on the use of construction waste to make recycled self-insulating materials. The existing construction waste recycled insulation bricks still have poor heat insulation effects, low strength, large shrinkage during use, and prone to wall cracks, etc. Many problems have affected the promotion and application of construction waste recycled insulation bricks

Method used

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  • Construction waste regenerated insulation brick and preparation method thereof
  • Construction waste regenerated insulation brick and preparation method thereof
  • Construction waste regenerated insulation brick and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A construction waste regenerated insulation brick, comprising the following raw materials by weight percentage:

[0045] 55% recycled materials from construction waste, 8% ordinary Portland cement, 1% quicklime, 2% modified diatomite, 1% lignocellulose and the rest of water;

[0046] Wherein, the recycled construction waste material is waste concrete with a particle size of 10 μm.

[0047] Specifically, the preparation method of the modified diatomite is:

[0048] (1) Get washed and dried shells, crush and sieve to obtain shell powder with a particle size of 0.05 mm;

[0049] (2) washing the coarse shell powder obtained in step (1) with a concentration of 2.5% sodium hydrogen phosphate solution for 3 times to obtain the coarse powder with liquid;

[0050] (3) After the liquid-laden shell powder obtained in step (2) is incubated at 500° C. for 15 minutes, rinsed 5 times with tap water at 50° C., and dried to obtain active shell powder;

[0051] (4) Take 5 parts by wei...

Embodiment 2

[0057] A construction waste regenerated insulation brick, comprising the following raw materials by weight percentage:

[0058] 85% of construction waste recycled materials, 15% of ordinary portland cement, 15% of quicklime, 15% of modified diatomite, 8% of lignocellulose and the rest of water;

[0059] Wherein, the recycled construction waste material is waste concrete with a particle size of 80 μm.

[0060] Specifically, the preparation method of the modified diatomite is:

[0061] (1) Get washed and dried shells, crush and sieve to obtain shell powder with a particle size of 0.1mm;

[0062] (2) washing the coarse shell powder obtained in step (1) with a concentration of 5% sodium hydrogen phosphate solution for 5 times to obtain the coarse powder with liquid;

[0063] (3) After the liquid-laden shell meal obtained in step (2) is kept at 600° C. for 10 minutes, rinsed 3 times with tap water at 60° C., and dried to obtain active shell powder;

[0064] (4) Take 25 parts by ...

Embodiment 3

[0067] A construction waste regenerated insulation brick, comprising the following raw materials by weight percentage:

[0068] 70% of construction waste recycled materials, 11% of ordinary portland cement, 3% of quicklime, 8% of modified diatomite, 4% of lignocellulose and the rest of water;

[0069] Wherein, the recycled construction waste material is waste concrete with a particle size of 40 μm;

[0070] Specifically, the preparation method of the modified diatomite is:

[0071] (1) Get washed and dried shells, crush and sieve to obtain shell powder with a particle size of 0.08mm;

[0072] (2) washing the coarse shell powder obtained in step (1) with a concentration of 3.5% sodium hydrogen phosphate solution for 4 times to obtain the coarse powder with liquid;

[0073] (3) After the coarse shell powder with liquid obtained in step (2) is kept at 550° C. for 12 minutes, rinsed 4 times with tap water at 55° C., and dried to obtain active shell powder;

[0074] (4) Take 15 ...

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Abstract

The invention discloses a construction waste reclaimed thermal insulation brick. The brick is prepared from raw materials in percentage by weight as follows: 55%-85% of construction waste reclaimed material, 8%-15% of cement, 1%-5% of quicklime, 2%-15% of modified diatomite, 1%-8% of lignocellulose and the balance of water. The invention also provides a preparation method of the construction wastereclaimed thermal insulation brick. The method comprises the steps as follows: (1) stirring the construction waste reclaimed material, the quicklime, the lignocellulose and the water to obtain a mixture A; (2) adding the modified diatomite and the cement to the mixture A obtained in step (1), and stirring the mixture to obtain a mixture B; (3) pouring the mixture B obtained in step (2) in a prefabricated mold, performing cutting after initial setting, and carrying out curing and drying to prepare the construction waste reclaimed thermal insulation brick. Compared with the prior art, the construction waste reclaimed thermal insulation brick has high strength and low shrinkage, solves the problems of wall cracking, bubbling and the like of self-thermal insulation materials in use and has aformaldehyde adsorption effect.

Description

technical field [0001] The invention belongs to the technical field of construction waste resource utilization, and in particular relates to a construction waste regenerated thermal insulation brick and a preparation method thereof. Background technique [0002] Construction waste is the waste produced after the demolition of urban buildings. It is mainly composed of waste concrete, waste mortar, waste masonry, waste wood, etc. Most of the construction waste is transported to the suburbs or surrounding cities for simple landfill or landfill without any treatment. Open storage not only wastes land and resources, but also pollutes the environment. At present, the amount of construction waste in my country accounts for 30-40% of the total annual urban waste. Construction waste has become one of the main solid wastes in cities. How to properly deal with these construction wastes has become a research topic in the field of construction and environmental protection. focus. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/10
CPCC04B28/10C04B2201/20C04B2201/32C04B2201/50C04B18/16C04B7/02C04B14/08C04B24/383
Inventor 周双庆谢平谢亮周天扬王瑾
Owner 湖南莲城机械化工程有限责任公司
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