Concrete self-curing agent and preparation method and using method thereof

A concrete and self-curing technology, which is used in the fields of concrete curing agent, concrete curing agent preparation, concrete self-curing agent, and concrete additives, can solve the problem of not giving a guiding scheme, and achieve the reduction of saturated steam pressure, improvement of design requirements and Quality requirements, the effect of reducing moisture migration channels

Inactive Publication Date: 2018-11-13
刘翠芬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And can improve the strength of concrete, no specific guidance scheme is given

Method used

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  • Concrete self-curing agent and preparation method and using method thereof
  • Concrete self-curing agent and preparation method and using method thereof
  • Concrete self-curing agent and preparation method and using method thereof

Examples

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Effect test

Embodiment 1

[0026] Example 1: The concrete self-curing agent of the present invention is made from the following raw materials by mass: 70 parts of evaporation inhibitor, 20 parts of micropore blocking agent, and 10 parts of water locking agent.

[0027] Described evaporation inhibitor uses the mixture of tetraethylene glycol and polyethylene glycol, and polyethylene glycol selects polyethylene glycol 400 for use, and the mass ratio of tetraethylene glycol and polyethylene glycol 400 is 1 : 1; the micropore blocking agent selects the mixture of silane / siloxane mixture and alkyl alkoxy silicon emulsion, namely the mixture of Dow Corning Z-6689 waterproofing agent and Momentive SC-50 waterproofing agent, Dow Corning Z-6689 The mass ratio of waterproofing agent to Momentive SC-50 waterproofing agent is 1:1; the water-locking agent is a mixture of polyvinyl alcohol and polyethylene oxide, and the quality of polyvinyl alcohol and polyethylene oxide is equal to The ratio is 1:1. See Table 1 fo...

Embodiment 2

[0031] Example 2: The concrete self-curing agent of the present invention is made from the following raw materials by mass: 50 parts of evaporation inhibitor, 45 parts of micropore blocking agent, and 5 parts of water locking agent.

[0032] Described evaporation inhibitor uses the mixture of tetraethylene glycol and polyethylene glycol, and polyethylene glycol selects polyethylene glycol 400 for use, and the mass ratio of tetraethylene glycol and polyethylene glycol 400 is 1 : 10; the described micropore blocking agent selects the mixture of silane / siloxane mixture and alkyl alkoxy silicon emulsion, namely the mixture of Dow Corning Z-6689 waterproofing agent and Momentive SC-50 waterproofing agent, Dow Corning Z-6689 The mass ratio of the waterproofing agent to Momentive SC-50 waterproofing agent is 1:50; the water-locking agent is a mixture of polyvinyl alcohol and polyethylene oxide, and the mass of polyvinyl alcohol and polyethylene oxide is equal. The ratio is 1:5. See ...

Embodiment 3

[0036] Example 3: The concrete self-curing agent of the present invention is made from the following raw materials by mass: 60 parts of evaporation inhibitor, 35 parts of micropore blocking agent, and 5 parts of water locking agent.

[0037] Described evaporation inhibitor is the combination of two kinds of raw materials of pentaerythritol and diethylene glycol monobutyl ether; the mass ratio of pentaerythritol and diethylene glycol monobutyl ether is 1: 2; Combination of three raw materials: triethoxysilane, methylphenyl silicone resin and silane coupling agent KH560; mass ratio of n-octyltriethoxysilane, methylphenyl silicone resin and silane coupling agent KH560 is 1:1:2; the water-locking agent is a combination of two raw materials, hydroxypropyl cellulose and polyacrylamide; the mass ratio of hydroxypropyl cellulose and polyacrylamide is 1:1.

[0038] The preparation method of the concrete self-curing agent comprises the following process steps: adding 20 parts of pentaer...

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Abstract

The invention discloses a concrete self-curing agent and a preparation method and a using method thereof. The concrete self-curing agent is prepared from the following raw materials in parts by mass:50-70 parts of an evaporation inhibitor, 20-45 parts of a microporous plugging agent and 5-10 parts of a water-locking agent, wherein the evaporation inhibitor is one or a mixture of several of ethylene glycol, propylene glycol, 1, 2-butanediol and other raw materials; the microporous plugging agent is one or a mixture of several of n-octyltriethoxysilane, a silane/siloxane mixture, namely a DowCorning Z-6689 water-proofing agent, and other raw materials; the water-locking agent is one or a mixture of several of hydroxymethyl cellulose, hydroxypropyl cellulose and other raw materials. The invention further provides the preparation method and the using method of the concrete self-curing agent. The concrete self-curing agent is good in performance, can reduce moisture evaporation of concreteto maintain the internal humidity of the concrete, does not need other additional curing ways, improves the strength of the concrete, and enhances design requirements and quality requirements of theconcrete.

Description

technical field [0001] The invention relates to a concrete additive, in particular to a concrete curing agent, in particular to a concrete self-curing agent, and belongs to the technical field of building materials. The invention also relates to a preparation method and a use method of the concrete curing agent. Background technique [0002] Concrete curing plays a pivotal role during construction. Proper curing can not only reduce the risk of concrete cracking, but also provide enough water for the cement hydration process to ensure that the concrete has sufficient strength. Proper curing can reduce the evaporation of concrete, ensure the internal humidity of the concrete, make the concrete fully hydrated, and make the microstructure denser, and the concrete or cement paste has better final properties. However, in areas with lack of water resources, long sun exposure time, and strong wind, it is very difficult to achieve proper maintenance, and shrinkage cracks often appea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B40/04C04B24/42
CPCC04B40/04C04B40/0039C04B24/026C04B24/023C04B24/32C04B24/42C04B24/383C04B24/2623C04B24/281C04B24/2641C04B24/2652
Inventor 吴伟刘昭洋王皓汪咏梅刘欢刘旭飞董树强刘翠芬康静
Owner 刘翠芬
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