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High-performance fair-faced concrete

A high-performance technology of fair-faced concrete, which is applied in the field of building materials, can solve the problems that the performance and appearance of fair-faced concrete cannot be balanced, and achieve the effects of reducing the risk of cracking, scientific design, and eliminating surface air bubbles

Inactive Publication Date: 2019-08-30
CHINA CONSTR EIGHT ENG DIV CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is: to provide a high-performance fair-faced concrete to solve the problem that the use performance and appearance performance of fair-faced concrete in the prior art cannot be balanced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The present embodiment discloses the raw material composition of fair-faced concrete of the present invention, specifically as follows:

[0031] 430Kg of cement, 1080Kg of continuously graded limestone with a particle size of 5-25mm, 710Kg of natural silica sand with a fineness modulus of 3.0, 150Kg of domestic water, 20Kg of stone powder, 18Kg of silicon powder, 12Kg of admixture, 35Kg of expansion agent, and 1.5Kg of basalt fiber.

[0032] The admixture is made of the following raw materials: 43Kg of polycarboxylic acid, 0.4Kg of polyether, 1Kg of potassium tartrate, and 6Kg of cellulose ether.

[0033] Basalt fibers are chopped fibers with a length of 20 mm.

[0034] The fair-faced concrete prepared in this embodiment is carried out wall molding, and the result finds that the color and luster is uniform, as attached figure 1 as shown.

Embodiment 2

[0036] The present embodiment discloses the raw material composition of fair-faced concrete of the present invention, specifically as follows:

[0037] 450Kg of cement, 1050Kg of continuously graded limestone with a particle size of 5-25mm, 720Kg of natural silica sand with a fineness modulus of 2.8, 145Kg of domestic water, 15Kg of stone powder, 15Kg of silicon powder, 13Kg of admixture, 30Kg of expansion agent, and 2.0Kg of basalt fiber.

[0038] The admixture is made of the following raw materials: 48Kg of polycarboxylic acid, 0.5Kg of polyether, 3Kg of potassium tartrate, and 8Kg of cellulose ether.

[0039] Basalt fibers are chopped fibers with a length of 20 mm.

[0040] The limiting expansion rate of the fair-faced concrete of the present embodiment is tested, and the results are as attached figure 2 shown.

Embodiment 3

[0042] The present embodiment discloses the raw material composition of fair-faced concrete of the present invention, specifically as follows:

[0043] 430Kg of cement, 1050Kg of continuously graded limestone with a particle size of 5-25mm, 730Kg of natural silica sand with a fineness modulus of 3.0, 150Kg of domestic water, 20Kg of stone powder, 20Kg of silicon powder, 13Kg of admixture, 25Kg of expansion agent, and 1.5Kg of basalt fiber.

[0044] The admixture is made of the following raw materials: 40Kg polycarboxylic acid, 0.3Kg polyether, 2Kg potassium tartrate, and 2Kg cellulose ether.

[0045] Basalt fibers are chopped fibers with a length of 20 mm.

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Abstract

The invention discloses high-performance fair-faced concrete, and solves the problem that use performance and appearance performance of fair-faced concrete in the prior art cannot be taken into account at the same time. The high-performance fair-faced concrete comprises the following components, in parts by weight: 420-460 parts of cement, 1050-1080 parts of coarse aggregate, 710-760 parts of fineaggregate, 145-165 parts of water, 15-25 parts of stone powder, 15-25 parts of silicon powder, 12-14 parts of an admixture, 20-40 parts of an expanding agent, and 1.5-3.0 parts of fibers. The fair-faced concrete provided by the invention has scientific design and a reasonable ratio; and the prepared fair-faced concrete can form a concrete building having extremely-low porosity, a uniform color, and excellent crack resistance and compression and folding resistance after being molded by casting.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a high-performance fair-faced concrete. Background technique [0002] In the field of building materials, fair-faced concrete is a kind of building structure construction material that has only been generally accepted in recent years. Since fair-faced concrete is formed by one-time pouring, the surface looks thick and simple under ideal conditions, realizing the surface decoration effect of the building and saving the process of secondary decoration of the building. Therefore, it has good advantages in construction cheapness and so on, and has gradually become a popular building material. [0003] The current engineering application of fair-faced concrete is in the exploratory stage. In the actual construction process, it is difficult to achieve the ideal appearance quality standard. In addition, the design of modern buildings often puts forward very high requirements on the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/50C04B14/28C04B14/06C04B18/146C04B14/04C04B2103/302C04B24/32C04B24/06C04B24/383C04B14/46C04B22/066C04B2103/0068
Inventor 秦靖闰林峰刘志强谢冬文鲍小鲁
Owner CHINA CONSTR EIGHT ENG DIV CORP LTD
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