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Concrete composite anti-freezing agent and preparation method thereof

An antifreeze and concrete technology, which is applied in the field of concrete admixtures, can solve the problems that the antifreeze does not act as a coagulant and the strength of the antifreeze increases slowly in the concrete.

Inactive Publication Date: 2021-06-25
SHANXI SUNWAY INTION TRADE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The antifreeze has no coagulation-accelerating effect, and the strength of concrete increases slowly when mixed with this type of antifreeze

Method used

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  • Concrete composite anti-freezing agent and preparation method thereof
  • Concrete composite anti-freezing agent and preparation method thereof
  • Concrete composite anti-freezing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Present embodiment provides a kind of composite concrete antifreeze, the raw material of described concrete antifreeze comprises by mass parts:

[0032]

[0033] Its preparation method is as follows:

[0034] (1) Put 45g of deionized water, 15g of high-efficiency water-reducing polycarboxylate superplasticizer, and 5g of slow-release slump-proof polycarboxylate superplasticizer in the reactor, adjust the speed to 200rpm, and control the temperature at 27°C Stir for 10 minutes;

[0035] (2) 20g of glycerol (antifreeze component) is placed in the above-mentioned reaction kettle, keep temperature and rotating speed constant and stir for 10min;

[0036] (3) 10g of sodium nitrite (antifreeze component) is placed in the above-mentioned reaction kettle, keep the temperature and rotating speed constant and stir for 10min;

[0037] (4) Place measured 2 parts of early strength agent and 0.15 part of air-entraining agent in the above-mentioned reaction kettle, keep the temper...

Embodiment 2

[0039] This embodiment provides a concrete composite antifreeze, the composition and preparation method of the concrete composite antifreeze are basically the same as those in Example 1, the only difference is that glycerol is not added; the antifreeze component is selected as a single antifreeze component sodium nitrite.

Embodiment 3

[0041] The present embodiment provides a composite antifreeze for concrete, the composition and preparation method of the composite antifreeze for concrete are basically the same as in Example 1, the difference is only: replace glycerol with methanol in equal parts.

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Abstract

The invention discloses a concrete composite anti-freezing agent and a preparation method thereof. The concrete composite anti-freezing agent comprises the following raw materials by mass: 15-30 parts of a water reducing component, 10-50 parts of an anti-freezing component, 1-3 parts of an early strength component, 0.1-0.3 part of an air entraining component, and 30-50 parts of water. The obtained composite anti-freezing agent is free of pungent smell; the doping amount in a cementing material is small; the composite anti-freezing agent is free ofchlorine and low in alkali, and has no corrosion effect on reinforced concrete; no flocculent substance overflows after the anti-freezing agent solution is stored at the temperature of -20 DEG C for 7 days; and the compressive strength ratio of the concrete composite anti-freezing agent at the temperature of -20 DEG C is obviously higher than the set requirement of -15 DEG C specified in JC457-2004.

Description

technical field [0001] The invention belongs to the technical field of concrete admixtures, in particular to a composite antifreeze for concrete and a preparation method thereof. Background technique [0002] More and more large-scale high-rise buildings are rising from the ground, and the market demand for reinforced concrete production is increasing. The construction quality and safety of concrete have become a hot issue that people are very concerned about. For about 3-4 months each year, concrete is in a state of low temperature in winter, and concrete antifreeze has become an essential and important component for protecting concrete in winter low temperature construction. At present, the types of concrete antifreeze in my country can be mainly divided into: sodium nitrite antifreeze: the main function of this type of antifreeze is to greatly reduce the freezing point and make it have the characteristics of rust prevention and early strength. This type of sodium nitrite ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/20C04B103/60
CPCC04B40/0039C04B2103/601
Inventor 张赛孟泽彬王英维
Owner SHANXI SUNWAY INTION TRADE CO LTD
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