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Ecological cement-based concrete reinforcing coating and preparation method thereof

A technology of ecological cement and concrete, which is applied in the field of architectural coatings in the field of industrial and civil construction, can solve the problems of complex components and unenvironmental protection of raw materials, and achieve the effects of improving microstructure, good crack repair effect, and small aggregation

Inactive Publication Date: 2019-01-04
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Common coatings on the market have complex components, raw materials are not environmentally friendly, and contain a large amount of harmful substances to the human body

Method used

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  • Ecological cement-based concrete reinforcing coating and preparation method thereof
  • Ecological cement-based concrete reinforcing coating and preparation method thereof
  • Ecological cement-based concrete reinforcing coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] An ecological cement-based concrete reinforced coating is prepared by mixing solid and liquid two-phase components. According to the weight percentage, its raw materials are composed of:

[0030] Solid phase components: 38% cement, 9% silica fume, 18% fly ash, 10% limestone powder;

[0031] Liquid phase components: 20% water, 4% water reducer, 1% defoamer.

[0032] The cement in the solid phase component is one or both of ordinary portland cement and rapid hardening aluminate iron cement, and the strength grade of the cement is not less than 32.5. In this embodiment, the cement used is P.O42. 5 Portland cement.

[0033] The silica fume in the solid phase component is SiO produced by high temperature smelting 2 It is an amorphous ultrafine active silica fume formed by rapid oxidation and condensation with Si gas and oxygen in the air. Silica fume is an industrial by-product that can significantly improve compressive, flexural, impermeable, anti-corrosion and abrasion ...

Embodiment 2

[0118] An ecological cement-based concrete reinforced coating is prepared by mixing solid and liquid two-phase components. According to the weight percentage, its raw materials are composed of:

[0119] Solid phase components: 35% cement, 10% silica fume, 15% fly ash, 15% limestone powder;

[0120] Liquid phase components: 20% water, 3% water reducer, 3% defoamer.

[0121] In this example, each component can be purchased through commercial channels, and the sources of each component are the same as in Example 1.

[0122] A preparation method for ecological cement-based concrete reinforced coating, comprising the following steps:

[0123] (1) Mix cement, silica fume, fly ash, and limestone powder in the solid phase, and mechanically stir for 25 to 30 minutes to make it evenly mixed;

[0124] (2) Add water and stir mechanically for 3-5 minutes, at this time, the mixture is a slightly moist powder;

[0125] (3) Add the admixture and perform mechanical stirring for 10 minutes t...

Embodiment 3

[0144] An ecological cement-based concrete reinforced coating is prepared by mixing solid and liquid two-phase components. According to the weight percentage, its raw materials are composed of:

[0145] Solid phase components: 40% cement, 5% silica fume, 20% fly ash, 10% limestone powder;

[0146] Liquid phase components: 25% water, 1% water reducer, 3% defoamer.

[0147] In this example, each component can be purchased through commercial channels, and the sources of each component are the same as in Example 1.

[0148] A preparation method for ecological cement-based concrete reinforced coating, comprising the following steps:

[0149] (1) Mix cement, silica fume, fly ash, and limestone powder in the solid phase, and mechanically stir for 25 to 30 minutes to make it evenly mixed;

[0150] (2) Add water and stir mechanically for 3-5 minutes, at this time, the mixture is a slightly moist powder;

[0151] (3) Add the admixture and perform mechanical stirring for 10 minutes to...

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Abstract

The invention discloses ecological cement-based concrete reinforcing coating and a preparation method thereof. The coating is prepared by mixing a solid-phase component and a liquid-phase component, wherein the solid-phase component comprises, by weight percentage, 35-40% of cement, 5-10% of silica fume, 15-20% of fly ash and 10-15% of limestone flour; the liquid-phase component comprises, by weight percentage, 20-25% of water, 1-5% of water reducing agent and 1-5% of defoaming agent, and the weight percentage sum of the components above is 100%. The cement-based concrete reinforcing coating has the advantages that the cement-based concrete reinforcing coating is simple and environment-friendly in components and harmless to human bodies and environments, the silica fume and the fly ash inthe powder materials are recycled industrial waste, the raw materials are simple, easy to obtain and low in cost, waste recycling has sustainable development significance, and the cement-based concrete reinforcing coating has a quite good crack repairing effect, can effectively improve concrete surface attractiveness and visual effect and can effectively increase concrete structure surface strength, carbonization resistance, water penetration resistance and chloride penetration resistance.

Description

technical field [0001] The invention relates to an architectural paint in the field of industrial and civil construction, in particular to an ecological cement-based concrete reinforced paint and a preparation method thereof. Background technique [0002] In industrial and civil construction concrete structures, honeycomb pockmarks and shrinkage cracks on the concrete surface greatly affect the appearance. At the same time, concrete carbonization, poor concrete impermeability, and poor concrete chloride ion penetration resistance will cause steel corrosion and even structural damage, which seriously The service life of concrete structures is shortened. Due to the many cases of concrete damage caused by the above reasons, the country and residents spend a lot of money on repairs and even reconstruction every year, causing very huge economic losses. [0003] In view of the honeycomb pitting, shrinkage cracking and other phenomena on the concrete surface, the commonly used rep...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B28/06C04B111/22C04B111/27C04B111/72
CPCC04B28/04C04B28/06C04B2111/00508C04B2111/22C04B2111/27C04B2111/72C04B18/146C04B18/08C04B14/28C04B2103/302C04B24/42
Inventor 李伟华李田雨王伟陈靓李磊
Owner HOHAI UNIV
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