Ultrahigh-strength building concrete and preparation method thereof

An ultra-high-strength concrete technology, applied in the field of concrete production, can solve the problems that foam concrete has not been widely used, and achieve the effects of increasing compression resistance, reducing self-shrinkage, and improving later-stage strength

Inactive Publication Date: 2017-05-31
芜湖浩权建筑工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the application of foam concrete in various fields has not been widely used, mainly due to the problems of dry density and compressive strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] A preparation method of ultra-high-strength building concrete, comprising the steps of:

[0026] S1. Put 86-99 parts of modified coated pottery clay, 21-29 parts of sand material, 11-24 parts of stone material, 16-34 parts of waste calcined material, and 11-14 parts of superfine fly ash through a high-temperature pulverizer, Grind to obtain powder, pass through a 200-220 mesh sieve, and then put it into a mixer and add water to stir and mix; obtain mixture A;

[0027] S2. Add 19-24 parts of hollow glass microspheres, 11-18 parts of phenolic resin, 21-24 parts of zeolite powder, and 11-14 parts of SiO2 airgel into another mixer, and stir while adding; Stir at a speed of 1 min, then add 9-14 parts of stabilizer and continue stirring for 30-50 min to obtain mixture B;

[0028] S3. Mix the mixture A obtained in step S1 with the mixture B obtained in step S2, add 12-18 parts of polycarboxylate superplasticizer and 6-9 parts of composite expansion agent and mix thoroughly to...

Embodiment 1

[0030] A preparation method of ultra-high-strength building concrete, comprising the steps of:

[0031] S1. Put 88 parts of modified coated pottery clay, 28 parts of sand material, 18 parts of stone material, 18 parts of waste calcined material, and 13 parts of superfine fly ash into a high-temperature pulverizer to obtain powder. After 200-220 Mesh sieve, then put into a blender and add water to stir and mix; Obtain mixture A;

[0032] S2. Add 19 parts of hollow glass microspheres, 15 parts of phenolic resin, 23 parts of zeolite powder, and 13 parts of SiO2 airgel into another mixer, and stir while adding; stir at a speed of 550r / min, and then add stabilizer 14 Continue to stir for 35min to obtain mixture B;

[0033] S3. Mix the mixture A obtained in step S1 with the mixture B obtained in step S2, add 13 parts of polycarboxylate high-efficiency water reducer and 7 parts of composite expansion agent and fully stir and mix to prepare concrete.

Embodiment 2

[0035] A preparation method of ultra-high-strength building concrete, comprising the steps of:

[0036]S1. Put 99 parts of modified coated pottery clay, 29 parts of sand material, 24 parts of stone material, 34 parts of waste calcined material, and 14 parts of superfine fly ash into a high-temperature pulverizer to obtain powder, and pass through a 220-mesh sieve , and then put into a mixer and add water to stir and mix; obtain mixture A;

[0037] S2. Add 24 parts of hollow glass microspheres, 18 parts of phenolic resin, 24 parts of zeolite powder, and 14 parts of SiO2 airgel into another mixer, and stir while adding; stir at a speed of 900r / min, and then add stabilizer 14 Continue stirring for 50 min to obtain mixture B;

[0038] S3. Mix the mixture A obtained in step S1 with the mixture B obtained in step S2, add 18 parts of polycarboxylate high-efficiency water reducer and 9 parts of composite expansion agent and fully stir and mix to prepare concrete.

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PUM

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Abstract

The invention discloses ultrahigh-strength building concrete and a preparation method thereof. The ultrahigh-strength building concrete is prepared from the following raw materials in parts by weight: 85-100 parts of modified coating pottery clay, 20-30 parts of a sand material, 10-25 parts of a stone material, 15-35 parts of a waste calcined material, 10-15 parts of ultrafine fly ash, 18-25 parts of hollow glass beads, 10-20 parts of phenolic resin, 20-25 parts of zeolite powder, 10-15 parts of SiO2 aerogel, 10-20 parts of a polycarboxylate superplasticizer, 5-10 parts of a compound expansion agent, 8-15 parts of a stabilizer, and an appropriate amount of water. The ultrahigh-strength building concrete provided by the invention, by adopting efficient proportioning of the modified coating pottery clay, the sand material, the stone material, the waste calcined material, the ultrafine fly ash, the hollow glass beads, the phenolic resin, the zeolite powder, the SiO2 aerogel, the polycarboxylate superplasticizer, the compound expansion agent, and the stabilizer, can effectively prevent surface and internal cracks caused by non-structural reasons of temperature, dry shrinkage and the like of the concrete; and the concrete also has relatively high impact resistance and impervious performance, is suitable for mine operation, and is good in safety performance and water resistance, and long in service life.

Description

technical field [0001] The invention relates to the technical field of concrete production, in particular to an ultra-high-strength building concrete and a preparation method thereof. Background technique [0002] In recent years, high strengthening has become one of the trends in the development of modern concrete technology. The research and development of high-strength concrete has made great progress. The strength of high-strength concrete has gradually increased, its performance has been continuously improved, and it has been widely used in many fields. However, with the complexity of building structures and the increasing number of super high-rise buildings, high-strength concrete can no longer meet the needs of construction, and ultra-high-strength concrete will become the most important trend in the development of concrete. All countries in the world have begun to conduct theoretical research and engineering applications on ultra-high-strength concrete. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B111/20C04B111/27
CPCC04B28/001C04B2111/00293C04B2111/00724C04B2111/20C04B2111/27C04B14/06C04B14/18C04B14/14C04B18/12C04B18/10C04B18/08C04B14/24C04B24/302C04B14/047C04B14/064C04B2103/0068C04B24/24
Inventor 胡圣武
Owner 芜湖浩权建筑工程有限公司
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