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Bare concrete

A technology of fair-faced concrete and water-reducing agent, applied in the field of concrete, which can solve the problems that clear-water concrete is easily eroded by rainwater, loses decorative meaning of clear-water concrete, and affects the service life of clear-water concrete. It is not easy to achieve decorative effects, not easy to be corroded by acid rain The effect of enhanced impermeability

Inactive Publication Date: 2019-09-10
广州市泰和混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Buildings made of fair-faced concrete usually need to withstand wind and rain in an open-air environment. However, since the surface of fair-faced concrete no longer has any materials such as painting, tiles, and stones, it is easily soaked or deteriorated by rainwater. The rainwater is generally acidic, so that the clear-water concrete is easy to be eroded by rainwater, and it is easy to affect the service life of the clear-water concrete. At the same time, it may also affect the appearance of the clear-water concrete, making the clear-water concrete lose its decorative meaning.

Method used

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Examples

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Embodiment 1

[0060] A kind of fair-faced concrete, comprises the component of following mass parts:

[0061] 16kg of water; 20kg of Portland cement; 5kg of slag powder; 7kg of limestone powder; 100kg of stone; 85kg of sand; 3kg of hollow glass microspheres; 2kg of ethylene-vinyl acetate copolymer;

[0062] In this embodiment, the particle size of the hollow glass microspheres is 20 μm.

[0063] The preparation method of fair-faced concrete is as follows:

[0064] S1. In the cement mixer, under normal temperature conditions, add 20kg of Portland cement and stir at a speed of 150r / min;

[0065] S2. Add 16 kg of water, 3 kg of hollow glass microspheres, 2 kg of ethylene-vinyl acetate copolymer, 0.8 kg of silane impregnating agent, and 0.1 kg of vaseline while stirring, and obtain a premix after stirring evenly;

[0066] S3. Add 5kg of slag powder, 7kg of limestone powder, 100kg of limestone, and 85kg of sand to the sand and gravel mixer at room temperature, and stir at a speed of 180r / min t...

Embodiment 2

[0072] A kind of fair-faced concrete, comprises the component of following mass parts:

[0073] 17kg of water; 18kg of Portland cement; 6kg of slag powder; 8kg of limestone powder; 103kg of stone; 80kg of sand; 4kg of hollow glass microspheres; 1kg of ethylene-vinyl acetate copolymer;

[0074] In this embodiment, the particle size of the hollow glass microspheres is 23 μm.

[0075] The preparation method of fair-faced concrete is as follows:

[0076] S1. In the cement mixer, under normal temperature conditions, add 18kg of Portland cement and stir at a speed of 150r / min;

[0077] S2. Add 17kg of water, 4kg of hollow glass microspheres, 1kg of ethylene-vinyl acetate copolymer, 1kg of silane impregnating agent, and 0.3kg of vaseline while stirring, and stir to obtain a premix;

[0078] S3. In the gravel mixer, under normal temperature conditions, add 6kg of slag powder, 8kg of limestone powder, 103kg of stone, and 80kg of sand, stir at a speed of 180r / min, and obtain aggregate...

Embodiment 3

[0084] A kind of fair-faced concrete, comprises the component of following mass parts:

[0085] 18kg of water; 15kg of Portland cement; 4kg of slag powder; 6kg of limestone powder; 105kg of stone; 83kg of sand; 5kg of hollow glass microspheres; 1.5kg of ethylene-vinyl acetate copolymer;

[0086] In this embodiment, the particle size of the hollow glass microspheres is 25 μm.

[0087] The preparation method of fair-faced concrete is as follows:

[0088] S1. In a cement mixer, under normal temperature conditions, add 15kg of Portland cement and stir at a speed of 150r / min;

[0089] S2. Add 18 kg of water, 5 kg of hollow glass microspheres, 1.5 kg of ethylene-vinyl acetate copolymer, 0.5 kg of silane impregnating agent, and 0.5 kg of vaseline while stirring, and obtain a premix after stirring evenly;

[0090] S3. In the gravel mixer, under normal temperature conditions, add 4kg of slag powder, 6kg of limestone powder, 105kg of stone, and 83kg of sand, stir at a speed of 180r / mi...

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Abstract

The invention relates to the field of concrete, and provides bare concrete. The invention aims to solve the problem that bare concrete is corroded easily by wind and rain. The bare concrete comprisesthe following components: in parts by mass, 16-18 parts of water, 15-20 parts of Portland cement, 6-8 parts of limestone powder, 100-105 parts of stone, 80-85 parts of sand, 3-5 parts of hollow glassmicrobeads, 1-2 parts of ethylene-vinyl acetate copolymer, 0.5-1 part of a silane impregnating agent and 0.1-0.5 part of Vaseline. Through addition of the hollow glass microbeads of tiny spheres, filling of pores formed by cement particles is facilitated, so that the impervious performance of the bare concrete is enhanced, rainwater does not penetrate into the bare concrete easily, and the servicelife of the bare concrete is prolonged.

Description

technical field [0001] The invention relates to the concrete field, more specifically, it relates to a kind of fair-faced concrete. Background technique [0002] Fair-faced concrete is an expression technique of architectural modernism, and it is also called decorative concrete because of its great decorative effect. The basic idea is that after the concrete is poured, there will no longer be any materials such as painting, tiles, and stones, which is a way of expressing the concrete without makeup. [0003] Buildings made of fair-faced concrete usually need to withstand wind and rain in an open-air environment. However, since the surface of fair-faced concrete no longer has any materials such as painting, tiles, and stones, it is easily soaked or deteriorated by rainwater. The rainwater is generally acidic, so that the clear-water concrete is easily eroded by rainwater, which may affect the service life of the clear-water concrete and may also affect the appearance of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B14/24C04B111/20C04B111/27
CPCC04B28/04C04B2111/2015C04B2111/2023C04B2111/27C04B18/141C04B14/28C04B14/14C04B14/041C04B14/24C04B24/2623C04B24/42C04B24/36
Inventor 陈嘉珊
Owner 广州市泰和混凝土有限公司
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