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Anti-freezing agent for building materials

A technology of building materials and antifreeze, which is applied in the fields of antifreeze for building materials and construction projects in winter. It can solve the problems of high price, endangering workers' health, corroding steel bars, etc., and achieves good adaptability, short setting time and slump maintenance. Effect

Inactive Publication Date: 2013-04-10
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the antifreeze used in the construction industry is mainly antifreeze with urea compound sodium nitrite or chloride salt as the antifreeze component. The base is a carcinogen and endangers the health of workers; the antifreeze with chlorine salt as the antifreeze component will corrode the steel bar

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] First, to prepare the water reducer, put the deionized water for production, polyacrylamine methyl olefin ether and acetic acid into the reaction kettle, heat up to 80°C, add distilled water with a mass concentration of 30%, stir, and heat up to 90°C. Add sodium hydroxide and initiator solution dropwise, the initiator ammonium polychlorate is added dropwise for 1-2 hours, keep warm for 1-3 hours, after cooling to 45°C, add sodium persulfate solution with a mass concentration of 35% , until the weight concentration of the solution in the reactor is about 45%, the water reducer is prepared. Weigh 25 parts by weight of water reducer, 10 parts by weight of ethylene glycol, 0.5 parts by weight of triethanolamine, 2.5 parts by weight of sodium dodecylsulfonate, and 2 parts by weight of urea, and mix them evenly. After stirring for 45 minutes, add 60 parts by weight of water, stir for 12 minutes.

Embodiment 2

[0012] The preparation method of the water reducer is the same as in Example 1. Weigh 25 parts by weight of water reducer, 9.5 parts by weight of ethylene glycol, 0.5 parts by weight of triethanolamine, 3 parts by weight of sodium dodecylsulfonate, and 2 parts by weight of urea, mix them evenly, and after stirring for 50 minutes, add 60 parts by weight of water, stir for 15 minutes.

Embodiment 3

[0014] The preparation method of the water reducer is the same as in Example 1. Weigh 20 parts by weight of water reducer, 10 parts by weight of ethylene glycol, 0.5 parts by weight of triethanolamine, 2.5 parts by weight of sodium dodecylsulfonate, and 2 parts by weight of urea, mix them evenly, and after stirring for 40 minutes, add 65 parts by weight of water, stir for 20 minutes.

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PUM

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Abstract

The invention discloses an anti-freezing agent for building materials, which solves the anti-freezing problem during constructional engineering in winter construction. The anti-freezing agent for building materials comprises a water reducer, glycol, triethanolamine, sodium dodecyl sulfate, urea and water. The anti-freezing agent disclosed by the invention has the advantages that the anti-freezing agent can be used in construction at a temperature within -5 to 20 DEG C, is non-toxic, alkali-free, chloride-free, ammonia release-free, suitable in water reduction, good in slump of concrete, short in condensation time, very adaptive to cement, capable of remarkably improving the performance of the blended and cured concrete, and widely applied to reinforced concrete structure in winter construction.

Description

technical field [0001] The invention belongs to the technical field of building material production, and in particular relates to an antifreeze agent for building materials, which is suitable for building construction in winter. Background technique [0002] At present, the antifreeze used in the construction industry is mainly antifreeze with urea compound sodium nitrite or chloride salt as the antifreeze component. The base is a carcinogen and endangers the health of workers; antifreeze with chlorine salt as an antifreeze component will corrode steel bars. Contents of the invention [0003] The purpose of the present invention is to overcome the above defects and provide a method that can effectively avoid freezing accidents of building materials when the actual temperature is lower than the design withstand temperature of the building materials, and at the same time do not use materials that are harmful to steel bars and people in the selection of raw materials. , good...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/26
Inventor 汪巍
Owner CHANGZHOU UNIV