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Preparation method of light and high-strength porous concrete

A porous concrete, lightweight technology, used in ceramic products, other household appliances, household appliances, etc., can solve the problems of low strength, cracking, and difficulty in high strength of porous concrete.

Inactive Publication Date: 2018-01-19
ZHENJIANG ZEFENGLIN BUILDING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the common porous concrete currently on the market often has serious defects such as low strength and cracking, which cannot meet the needs of the rapid development of the construction industry. It is difficult for the prepared porous concrete to achieve high strength when it is light in weight.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A preparation method of high-strength lightweight porous concrete, the steps are as follows:

[0015] (1) Raw material preparation: Weigh 400 parts of cement, 700 parts of water, 200 parts of modified fine aggregate, 50 parts of early strength agent, 70 parts of water reducing agent, 30 parts of sodium bicarbonate, and 110 parts of sand and gravel, and set aside;

[0016] (2) Dry mix cement, modified fine aggregate, early strength agent, water reducer, sodium bicarbonate and sand, then add water, stir evenly, and introduce carbon dioxide gas during the mixing process;

[0017] (3) Transfer the mixture prepared in step (2) to an abrasive tool, and cure it for 3 days under certain conditions to obtain the high-strength lightweight porous concrete.

[0018] Further, the modified fine aggregate is prepared by mixing fine aggregate, polyamide resin and water in a ratio of parts by weight of 4:1:6.

[0019] Further, the flow rate of the carbon dioxide gas is 3 cubic meters p...

Embodiment 2

[0021] A preparation method of high-strength lightweight porous concrete, the steps are as follows:

[0022] (1) Raw material preparation: Weigh 300 parts of cement, 600 parts of water, 150 parts of modified fine aggregate, 30 parts of early strength agent, 60 parts of water reducing agent, 20 parts of sodium bicarbonate, and 75 parts of sand and gravel, and set aside;

[0023] (2) Dry mix cement, modified fine aggregate, early strength agent, water reducer, sodium bicarbonate and sand, then add water, stir evenly, and introduce carbon dioxide gas during the mixing process;

[0024] (3) Transfer the mixture prepared in step (2) to an abrasive tool, and cure it for 3 days under certain conditions to obtain the high-strength lightweight porous concrete.

[0025] Further, the modified fine aggregate is prepared by mixing fine aggregate, polyamide resin and water in a ratio of parts by weight of 4:1:6.

[0026] Further, the flow rate of the carbon dioxide gas is 3 cubic meters pe...

Embodiment 3

[0028] A preparation method of high-strength lightweight porous concrete, the steps are as follows:

[0029] (1) Raw material preparation: Weigh 500 parts of cement, 800 parts of water, 300 parts of modified fine aggregate, 60 parts of early strength agent, 80 parts of water reducing agent, 40 parts of sodium bicarbonate, and 150 parts of sand and gravel, and set aside;

[0030] (2) Dry mix cement, modified fine aggregate, early strength agent, water reducer, sodium bicarbonate and sand, then add water, stir evenly, and introduce carbon dioxide gas during the mixing process;

[0031] (3) Transfer the mixture prepared in step (2) to an abrasive tool, and cure it for 3 days under certain conditions to obtain the high-strength lightweight porous concrete.

[0032] Further, the modified fine aggregate is prepared by mixing fine aggregate, polyamide resin and water in a ratio of parts by weight of 4:1:6.

[0033] Further, the flow rate of the carbon dioxide gas is 3 cubic meters p...

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Abstract

The invention provides a preparation method of light and high-strength porous concrete. The method comprises the steps as follows: (1) raw material preparation: 300-500 parts of cement, 600-800 partsof water, 150-300 parts of modified fine aggregate, 30-60 parts of an early strength agent, 60-80 parts of a water reducer, 20-40 parts of sodium hydrogen carbonate and 75-150 parts of sand are weighed for later use; (2) the cement, the modified fine aggregate, the early strength agent, the water reducer, sodium hydrogen carbonate and the sand are dry mixed, water is added, the mixture is stirreduniformly, and carbon dioxide is introduced during stirring; (3) the mixture prepared in the step (2) is conveyed to a grinder and cured under a certain condition for 3 d, and the light and high-strength porous concrete is obtained. The light and high-strength porous concrete is light in weight and high in strength and meets the existing requirements of the building industry.

Description

technical field [0001] The invention relates to a method for preparing concrete, in particular to a method for preparing high-strength lightweight porous concrete. Background technique [0002] With the development of buildings in the direction of super high-rise, big collapse and heavy load, reducing the weight of buildings has become an urgent need in the construction industry. Porous concrete greatly reduces the self-weight of the material due to the use of less or no coarse aggregate in ordinary concrete, and has remarkable light-weight characteristics. However, the common porous concrete currently on the market often has serious defects such as low strength and cracking, which cannot meet the needs of the rapid development of the construction industry. The prepared porous concrete is difficult to achieve high strength when it is light in weight. Contents of the invention [0003] Aiming at the above problems, the present invention proposes a preparation method of hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02C04B38/00
Inventor 吴江陈秀兰
Owner ZHENJIANG ZEFENGLIN BUILDING MATERIALS CO LTD
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