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Preparation method of anti-compression autoclaved brick

A technology of autoclaved bricks and prefabricated materials, which is applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of poor compressive strength and easy cracking, and achieve good compression and crack resistance, It is not easy to crack or break, and the effect of reducing water and air pollution

Inactive Publication Date: 2017-12-26
TONGLING FENGZE BUILDING MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the autoclaved bricks prepared by fly ash have poor compressive strength and are easy to crack, which needs to be solved urgently.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A method for preparing a pressure-resistant autoclaved brick, comprising the steps of:

[0020] S1. Mix chlorinated polyethylene glycol 400 and β-cyclodextrin, ultrasonically disperse, add sodium hydroxide and sodium dodecylbenzenesulfonate when the temperature rises, stir under nitrogen protection, cool down, and adjust the pH value of the system to be neutral , get the prefabricated material;

[0021] S2. Mix the prefabricated material, fly ash, cement, and water evenly, add quicklime, water reducer, and curing agent, mix evenly, and press to form a blank;

[0022] S3, sending the blank into the autoclave room for curing to obtain the pressure-resistant autoclaved brick.

Embodiment 2

[0024] A method for preparing a pressure-resistant autoclaved brick, comprising the steps of:

[0025] S1. Mix 10 parts of chlorinated polyethylene glycol 400 and 50 parts of β-cyclodextrin in parts by weight, ultrasonically disperse for 80 minutes, add 4 parts of sodium hydroxide and 0.1 part of sodium dodecylbenzenesulfonate to 55°C , stirred for 7 minutes under the protection of nitrogen, cooled, adjusted the pH value of the system with hydrochloric acid to be neutral, and obtained the prefabricated material;

[0026] S2. Mix 20 parts of prefabricated material, 80 parts of fly ash, 15 parts of cement, and 18 parts of water in parts by weight, add 4 parts of quicklime, 2 parts of water reducing agent, and 0.5 parts of curing agent and mix evenly, press molding, press pressure is 18MPa, and the pressing time is 2h to obtain a billet;

[0027] S3. Send the blank to the autoclave room for curing for 10 hours, the steam pressure is 2.5 MPa, and the steam temperature is 205° C. ...

Embodiment 3

[0029] A method for preparing a pressure-resistant autoclaved brick, comprising the steps of:

[0030] S1. Mix 4 parts of chlorinated polyethylene glycol 400 and 60 parts of β-cyclodextrin in parts by weight, disperse ultrasonically for 40 minutes, add 2 parts of sodium hydroxide and 0.2 parts of sodium dodecylbenzenesulfonate at 65°C , stirred for 4 minutes under the protection of nitrogen, cooled, adjusted the pH value of the system with hydrochloric acid to be neutral, and obtained the prefabricated material;

[0031] S2. Mix 30 parts of prefabricated material, 60 parts of fly ash, 25 parts of cement, and 4 parts of water in parts by weight, add 10 parts of quicklime, 1 part of water reducing agent, and 1.2 parts of curing agent and mix evenly, press molding, press pressure is 16MPa, and the pressing time is 4h to obtain the billet;

[0032] S3. Send the billet into the autoclave room for curing for 6 hours, the steam pressure is 4 MPa, and the steam temperature is 195° C....

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PUM

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Abstract

The invention discloses a preparation method of an anti-compression autoclaved brick. The preparation method comprises the following steps: mixing chlorinated polyethylene glycol 400 and beta-cyclodextrin, carrying out ultrasonic dispersion, adding sodium hydroxide and sodium dodecyl benzene sulfonate under heating, stirring under the protection of nitrogen, cooling, adjusting the pH value of the system to the neutral region to obtain a prefabricated material; evenly mixing the prefabricated material, fly ash, cement, and water, adding limestone, a water reducer, and a curing agent, evenly mixing, pressing and moulding the mixture to obtain a blank; delivering the blank to an autoclaving chamber, and carrying out curing to obtain the autoclaved brick. Fly ash is taken as the raw material to prepare the autoclaved brick; a large amount of cultivated land is saved, the water pollution and air pollution are reduced, fly ash is converted into valuable resources and effectively recovered; moreover, the manufacturing cost is low, the loss of die is little, the anti-compression strength is high, and the structure is stable and is difficult to destroy.

Description

technical field [0001] The invention relates to the technical field of autoclaved bricks, in particular to a preparation method of pressure-resistant autoclaved bricks. Background technique [0002] At present, the reuse of fly ash has been widely concerned, and new technologies are constantly being produced, but a large amount of garbage is still generated in the process of recycling, causing environmental pollution, and the steps of making finished products are complicated, consuming a lot of manpower and financial resources. A simple, high-utility, non-negative approach. [0003] At present, fly ash autoclaved bricks use fly ash and lime as the main raw materials, and a large amount of fly ash is consumed during production, which reduces pollution, protects the environment, and does not cause negative effects. However, the autoclaved bricks prepared by fly ash have poor compressive strength and are easy to crack, which needs to be solved urgently. Contents of the inven...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B24/32C04B20/02C04B18/08
CPCC04B18/08C04B20/023C04B24/32C04B28/00C04B2201/50C04B22/002C04B22/064C04B2103/302C04B2103/0068Y02W30/91
Inventor 石玉伟
Owner TONGLING FENGZE BUILDING MATERIALS TECH
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