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White fair-faced concrete for prefabricated part and preparation method of white fair-faced concrete

A technology for veneer concrete and prefabricated components, applied in the field of building materials, can solve the problems of difficult to achieve one-time molding of fair-faced concrete and high standard requirements for maintenance-free later, and achieve the effects of flexible and adjustable fluidity, less pores and small color difference

Pending Publication Date: 2021-12-10
GUANGDONG MINGYANG WIND POWER IND GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the application strength grade of white fair-faced concrete in China is generally below C50, and there are few reports above C50, and no matter from the material itself or the production process, it is difficult to meet the high standard requirements of one-time molding of fair-faced concrete and no maintenance in the later stage. color repair complete

Method used

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  • White fair-faced concrete for prefabricated part and preparation method of white fair-faced concrete
  • White fair-faced concrete for prefabricated part and preparation method of white fair-faced concrete
  • White fair-faced concrete for prefabricated part and preparation method of white fair-faced concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4

[0046] Examples 1 to 4 are C35 white fair-faced concrete with white P.W42.5 cement as the main cementitious material. The specific mix ratio is shown in Table 1, and the unit of each component is kg / m 3 , the water reducing agent used is the same.

[0047] Table 1

[0048]

Embodiment 5～7

[0049] Examples 5-7 are C40-C50 white fair-faced concrete with white P.W42.5 cement as the main cementitious material. The specific mix ratio is shown in Table 2, and the unit of each component is kg / m 3 , the water reducing agent used is the same.

[0050] Table 2

[0051]

Embodiment 8～12

[0052] Examples 8-12 are C35-C50 white fair-faced concrete with gray P.O42.5 cement as the main cementitious material. The specific mix ratio is shown in Table 3, and the unit of each component is kg / m 3 , the water reducing agent used is the same.

[0053] table 3

[0054]

[0055] Examples 13-15 are C60-C80 white fair-faced concrete with gray P.O42.5 cement as the main cementitious material. The specific mix ratio is shown in Table 4, and the unit of each component is kg / m 3 , the water reducing agent used is the same. The coarse aggregate used is 5-20mm light gray limestone crushed stone, with continuous gradation and mud content ≤ 1.0%, crushing index ≤ 9%, needle flake content ≤ 3%.

[0056] Table 4

[0057]

[0058] The appearance and strength of the above Examples 1-15 are shown in Table 5.

[0059] table 5

[0060]

[0061] As can be seen from Table 5, using the mix ratios provided by Examples 1 to 15, the white clear water facing concrete components with...

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Abstract

The invention discloses white fair-faced concrete for a prefabricated part and a preparation method of the white fair-faced concrete. Each cubic meter of the concrete comprises the following components by weight: 320-400kg of cement, 50-190kg of an admixture, 820-1010kg of coarse aggregate, 630-980kg of fine aggregate, 0-15kg of a homogeneity regulator, 5-16kg of a water reducing agent, 145-170kg of water and 0-35kg of titanium dioxide, and the total volume weight of the concrete is 2320-2430kg / m<3>. The C35-C80 grade white fair-faced concrete with high whiteness requirements such as light white and creamy white can be obtained, the requirements for high early strength and rapid demolding of components are met, the concrete is environmentally friendly, low in cost and flexible and adjustable in flowability, the concrete surface is flat, fine and smooth, the color is uniform and basically consistent, secondary decoration is not needed, production equipment does not need to be transformed or added, and the concrete can be applied to fabricated buildings or wind power concrete tower components, and has practical production operability and popularization value.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to white clear water facing concrete for prefabricated components and a preparation method thereof. Background technique [0002] In recent years, with the advancement of materials, formwork and construction technology, fair-faced concrete has been widely favored by architectural designers and construction units. Qingshui component is the development direction of assembly components, and it is also the embodiment of the technical strength of assembly enterprises, which is more in line with the promotion concept of high-end assembly and customization. White fair-faced concrete is a novel fair-faced concrete. Due to the particularity of the material, it must not only meet the requirements of structural bearing capacity, but also have strict requirements for uniform color and neat texture of the concrete itself. It has high research and application value. . [0003] White ...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B18/04C04B14/06C04B111/82
CPCC04B28/04C04B14/06C04B18/0418C04B2111/82C04B2111/00017C04B2103/302C04B18/141C04B14/26C04B24/383Y02W30/91
Inventor 王军
Owner GUANGDONG MINGYANG WIND POWER IND GRP CO LTD
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