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Moisture-absorbing concrete brick, and preparation process and application of moisture-absorbing concrete brick in prefabricated wall

A technology for concrete bricks and prefabricated walls, applied in the field of concrete prefabricated products, can solve the problems of poor tensile and flexural thermal insulation properties of concrete, affecting the living comfort of users, and small pores for water absorption of concrete, and achieves strong fluidity, widened water absorption and other problems channel, the effect of excellent moisture absorption

Inactive Publication Date: 2020-08-04
上海福铁龙住宅工业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the technical problems of concrete used in existing building structures such as poor tensile, bending and thermal insulation properties
[0006] The above-mentioned existing technical solutions have the following defects: the coarse aggregate in the above-mentioned prior art uses stones, and after the stones are combined with cement, a layer of cement film will be wrapped on the surface of the stones, so that the water absorption pores of the concrete are smaller and the water absorption is poor.
Especially in the southern region, during the rainy season, the houses built with the above-mentioned concrete will cause water drops on the walls of the house due to poor moisture absorption effect, which will not only affect the living comfort of the users, but also shorten the life of the house

Method used

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  • Moisture-absorbing concrete brick, and preparation process and application of moisture-absorbing concrete brick in prefabricated wall

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0036] a. Weigh 60g of rosin, crush it and put it into a 1000ml reactor, then add 20g of tall oil, 8g of triterpene saponins and 6g of lignin into the reactor, raise the temperature to 170°C, and wait for the mixture to melt completely. Stirring was started, and the rotating speed was 160r / min and stirred for 20min to prepare mixed resin A;

[0037] b. Add 18g of maleic anhydride and 5g of benzoquinone into the reaction kettle, heat up to 165°C, and react for 60min under the condition of rotating speed of 160r / min to prepare the addition resin B;

[0038] c. Add 20 g of a mixture of polyethylene glycol and pentaerythritol dropwise to the reactor, and carry out graft esterification reaction at 200° C. to generate mixed resin C (air-entraining agent).

preparation example 2

[0040] a. Weigh 60g of rosin, crush it and put it into a 1000ml reactor, then add 20g of tall oil, 8g of triterpene saponins and 6g of lignin into the reactor, raise the temperature to 170°C, and wait for the mixture to melt completely. Stirring was started, and the rotating speed was 160r / min and stirred for 20min to prepare mixed resin A;

[0041] b. Add 18g of maleic anhydride to the reaction kettle, heat up to 165°C, and react for 60min under the condition of rotating speed of 160r / min to prepare the addition resin B;

[0042] c. Add 20 g of a mixture of polyethylene glycol and pentaerythritol dropwise to the reactor, and carry out graft esterification reaction at 200° C. to generate mixed resin C (air-entraining agent).

preparation example 3

[0044] a. Weigh 60g of rosin, crush it and put it into a 1000ml reactor, then add 20g of tall oil, 8g of triterpene saponins and 6g of lignin into the reactor, raise the temperature to 170°C, and wait for the mixture to melt completely. Stirring was started, and the rotating speed was 160r / min and stirred for 20min to prepare mixed resin A;

[0045] b. Add 18g of maleic anhydride and 5g of benzoquinone into the reaction kettle, heat up to 165°C, and react for 60min under the condition of rotating speed of 160r / min to prepare the addition resin B;

[0046] c. Add 20 g of polyethylene glycol mixture dropwise to the reaction kettle, and carry out graft esterification reaction at 200° C. to generate mixed resin C.

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Abstract

The invention relates to the field of concrete prefabricated products, and in particular, relates to a moisture-absorbing concrete brick, and a preparation process and application of the moisture-absorbing concrete brick in a prefabricated wall, wherein the moisture-absorbing concrete brick comprises the following components: 63-82 parts of clay brick residues, 12-14 parts of cement, 2-5 parts offly ash, 5.5-9.5 parts of water, and 1-4 parts of an additive. The moisture-absorbing concrete brick provided by the invention has the effect of improving the moisture absorption of the concrete brick. The invention further discloses the preparation process of the moisture-absorbing concrete brick. The preparation process comprises the steps: watering and wetting clay brick residues; weighing corresponding parts of cement, the clay brick residues treated in the step 1 and fly ash, putting into a stirrer, and stirring; adding one third of water according to the proportion and continuously stirring; adding the rest of the water, an air entraining agent and the water reducing agent according to the proportion in the step 3, and stirring until the materials are uniformly mixed; injecting the moisture-absorbing concrete prepared in the step 4 into a mold, molding and demolding. The preparation process of the moisture-absorbing concrete brick provided by the invention has the effect of improving the uniformity of moisture-absorbing concrete slurry.

Description

technical field [0001] The invention relates to the technical field of concrete prefabricated products, in particular to a moisture-absorbing concrete brick, a preparation process and its application in prefabricated walls. Background technique [0002] Fired bricks are one of the main raw materials for house construction, the most common of which are fired clay bricks. Sintered clay bricks are made of clay as raw material, after molding and firing at a high temperature of about 1000 °C. It can still maintain its strength and other important properties at 100°C, and can resist general fires. It is recognized as a class A fireproof material by the fire department, and has good fire resistance and weather resistance. Fired clay bricks produce countless micropores during the firing process, which can absorb and reduce noise; at the same time, the micropores can absorb excess moisture in humid air and reduce the humidity in the house. [0003] Brick factories will produce some...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B38/08C04B38/10C08G81/02C08F289/00C08F222/06C04B24/34E04C1/00E04B2/14C04B103/30
CPCC04B28/04C04B38/10C04B40/0039C04B2103/304C08F289/00C08G81/025E04B2/14E04C1/00C04B18/16C04B18/08C04B2103/302C04B38/08C04B38/0003C04B24/34C04B24/24C04B24/32C08F222/06
Inventor 张超
Owner 上海福铁龙住宅工业发展有限公司