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Concrete curing agent, curing coating and preparation method thereof

A concrete curing agent and concrete technology, applied in the field of concrete, can solve problems such as easy cracking, low hardness, and insufficient strength, and achieve the effects of improving water retention, surface strength, and service life

Active Publication Date: 2022-05-13
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The object of the present invention is to provide a concrete curing agent, curing coating and preparation method thereof, to solve the problem of hardness caused by the relatively large water-cement ratio on the surface of the current ready-mixed concrete low strength, insufficient strength, and easy cracking, and at the same time significantly improve the durability of the concrete before and after hardening, impermeability, resistance to dry-wet-freeze-thaw cycle damage, etc.

Method used

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  • Concrete curing agent, curing coating and preparation method thereof
  • Concrete curing agent, curing coating and preparation method thereof
  • Concrete curing agent, curing coating and preparation method thereof

Examples

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preparation example Construction

[0078]The present invention also proposes a preparation method of concrete curing coating, the preparation method adopts the above-mentioned concrete curing agent, and the preparation method comprises the following steps:

[0079] Step 1, weighing fluorosilicate and water according to the proportion, stirring and mixing evenly to obtain the hardener;

[0080] Step 2, weighing the alkali catalyst and water according to the proportion, stirring and mixing uniformly to obtain a catalytic liquid, weighing the silane coupling agent, hydrogen-containing silicone oil, crosslinking agent and silica sol according to the proportion, stirring and mixing uniformly to obtain a precursor; The precursor and the catalytic solution are placed in a nitrogen-protected reaction vessel, and stirred and mixed evenly at a temperature of -20-30°C (such as -20°C, 10°C, 0°C, 10°C, 20°C or 30°C) to obtain hydrophobic agent;

[0081] Step 3: apply the hardener on the surface of the concrete, and within ...

Embodiment 1

[0088] The concrete curing agent provided in this embodiment is composed of a hardener and a hydrophobic agent, wherein, in parts by weight, the raw material of the hardener includes 5 parts of fluorosilicate (4 parts of magnesium fluorosilicate, 1 part of ammonium fluorosilicate) and 100 parts of water, the raw materials of hydrophobic agent include: 5 parts of alkali catalyst (3 parts of potassium hydroxide, 2 parts of calcium hydroxide), 5 parts of silane coupling agent (2-(3,4-epoxycyclohexane base) ethyl triethoxysilane coupling agent 1 part, N-(β-aminoethyl)-γ-aminopropyl trimethyl (ethyl) oxysilane 4 parts), hydrogen-containing silicone oil 5 parts, crosslinking agent 5 parts (including 4 parts of tetraethyl orthosilicate and 1 part of tetrabutyl titanate), 50 parts of silica sol (including 10 parts of alkaline silica sol, 40 parts of neutral silica sol) and 1000 parts of water.

[0089] In this embodiment, the method for preparing the concrete curing coating by using t...

Embodiment 2

[0102] In this embodiment, the specific components of the concrete curing agent are changed, and the preparation method of the concrete curing coating is the same as that in Embodiment 1, and will not be repeated here. The concrete curing agent of the present embodiment is made of hardener and hydrophobic agent, and by weight, the raw material of hardener comprises: 7 parts of fluorosilicates (wherein 3 parts of iron fluorosilicates, 4 parts of copper fluorosilicates) and water 100 parts; the raw materials of hydrophobic agent include: 10 parts of alkali catalyst (6 parts of potassium hydroxide, 2 parts of rubidium hydroxide, 2 parts of calcium hydroxide), 6 parts of silane coupling agent (of which N,N-diethyl- 4 parts of 3-aminopropyltrimethoxysilane, 3 parts of γ-aminopropylsilane triol), 6 parts of hydrogen-containing silicone oil, 7 parts of crosslinking agent (including 4 parts of tetramethyl orthosilicate, tetrapropyl titanate 3 parts of ester), 40 parts of silica sol (3...

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Abstract

The invention belongs to the technical field of concrete, and particularly relates to a concrete curing agent, a curing coating and a preparation method thereof. The concrete curing agent comprises a hardening agent and a water repellent agent, the hardening agent comprises the following raw materials in parts by weight: 0.1-10 parts of fluosilicate and 100 parts of water, and the water repellent agent comprises the following raw materials in parts by weight: 0.1-10 parts of a base catalyst, 1-10 parts of a silane coupling agent, 0.1-10 parts of hydrogen-containing silicone oil, 5-10 parts of a cross-linking agent, 10-100 parts of silica sol and 100-1000 parts of water. According to the technical scheme, the surface strength, hardness, hydrophobicity, impermeability and freeze-thaw resistance of the concrete before and after hardening can be remarkably improved, and the service life of a concrete structure is effectively prolonged.

Description

technical field [0001] The invention belongs to the technical field of concrete, and in particular relates to a concrete curing agent, a curing coating and a preparation method thereof. Background technique [0002] The marine salt industry is the production of seawater sun-dried salt and seaside underground brine sun-dried salt, as well as the production of raw salt into salt products. The process is inseparable from the support of concrete structures (such as salt ponds, salt farms, and transportation bridges). As an important material in the marine salt industry, concrete is a typical hydrophilic porous material. The gel pores in the cement stone, the microcracks in the concrete matrix and the connected pores in the interface transition zone can all be used as transmission channels for harmful media. Harmful substances such as chloride salts and sulfates in the marine salt industry use water as a carrier and penetrate into the interior of the concrete matrix through these...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B40/04
CPCC04B40/04C04B41/009C04B41/52C04B41/70C04B28/02C04B41/4535C04B41/5018C04B41/5024C04B41/4922C04B41/4961C04B41/5072C04B41/5089C04B41/5011
Inventor 逄博金祖权张云升于泳张小影熊传胜李宁李梦圆
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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