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Concrete addictive and preparation method thereof

A technology of concrete and additives, which is applied in the field of fine chemicals, can solve the problems of application and reports, and achieve the effects of good stability, reduced surface cracks, and no delamination

Inactive Publication Date: 2012-01-25
TIANJIN SANNONGJIN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no application in this area has been found so far

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The concrete additive that present embodiment provides comprises the following components by weight:

[0013] Methacrylic acid 100 Sodium hydroxide 33

[0014] Hydroxyethyl cellulose 0.0 4 Potassium persulfate 0.04

[0015] Polyethylene glycol acrylate 0.01

[0016] The preparation method of the concrete additive provided in this embodiment is to add 100 kilograms of methacrylic acid into a reaction vessel with a stirrer, then add a sodium hydroxide solution with a solid content of 33 kilograms for neutralization, and the degree of neutralization is 60%. Then add 0.04 kg of hydroxyethyl cellulose, 0.04 kg of potassium persulfate and 0.01 kg of polyethylene glycol acrylate to the neutralizing solution in turn, react for 60-80 minutes, and finally mix with concrete and send to the construction site.

Embodiment 2

[0018] The concrete additive that present embodiment provides comprises the following components by weight:

[0019] Methacrylic acid 100 Sodium hydroxide 50

[0020] Hydroxyethylcellulose 0.06 Potassium persulfate 0.06

[0021] Polyethylene glycol acrylate 0.03

[0022] The preparation method of the concrete additive provided in this embodiment is to add 100 kilograms of methacrylic acid into a reaction vessel with a stirrer, then add a sodium hydroxide solution with a solid content of 50 kilograms for neutralization, and the degree of neutralization is 90%. Then add 0.06 kg of hydroxyethyl cellulose, 0.06 kg of potassium persulfate and 0.03 kg of polyethylene glycol acrylate to the neutralizing solution in turn, react for 60-80 minutes, and finally mix it with concrete and send it to the construction site.

Embodiment 3

[0024] Methacrylic acid 100 Sodium hydroxide 41

[0025] Hydroxyethylcellulose 0.05 Potassium persulfate 0.05

[0026] Polyethylene glycol acrylate 0.02

[0027] The preparation method of the concrete additive provided in this embodiment is to add 100 kilograms of methacrylic acid into a reaction vessel with a stirrer, then add a sodium hydroxide solution with a solid content of 41 kilograms for neutralization, and the degree of neutralization is 60%. Then add 0.05 kg of hydroxyethyl cellulose, 0.05 kg of potassium persulfate and 0.02 kg of polyethylene glycol acrylate to the neutralizing solution in sequence, react for 60-80 minutes, and finally mix with concrete and send to the construction site.

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Abstract

The invention discloses a concrete addictive and a preparation method thereof. The addictive comprises the following components in parts by weight: 100 parts of methacrylic acid, 33-50 parts of sodium hydroxide, 0.04-0.06 part of hydroxyethyl cellulose, 0.04-0.06 part of potassium sulphate and 0.01-0.03 part of polyethyleneglycol diacrylate. The concrete addictive provided by the invention has no corrosion action to concrete and steel reinforcing bars, favorable stability and no demixed phenomenon; in addition, the concrete addictive can be used for preventing water from evaporating, thereby water in the concrete can be utilized to the maximum extent for finishing the hydration, the surface crazing caused by temperature change is reduced, further the effect for beautifying the surface is achieved, the curing period can be shortened simultaneously, water and labor are saved and the engineering cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals, in particular to a concrete additive and a preparation method thereof. Background technique [0002] At present, with the application of commercial concrete, commercial mortar and other new building decoration materials (such as vibration-free concrete, self-leveling mortar, polymer mortar, thermal insulation mortar, plaster, etc.) in the construction industry, the progress of the project is accelerating. In order to meet the requirements of construction performance, these materials usually need to add some water-reducing, waterproof and other additives, but in many cases, it is necessary to reduce water loss (such as the maintenance of cement products) to ensure that the cementitious material is fully hydrated, especially It is in the case of low water-to-binder ratio, so the water retention effect is particularly important. However, no application in this area has been reported so far. ...

Claims

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Application Information

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IPC IPC(8): C04B24/38
Inventor 王辰
Owner TIANJIN SANNONGJIN TECH
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