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A compound type concrete antifreezer and a preparing method thereof

A concrete and antifreeze technology, applied in the field of building materials, can solve problems such as unstable quality and affecting concrete construction projects, and achieve the effects of improving application performance, enhancing antifreeze effect, and reducing water-binder ratio

Inactive Publication Date: 2019-05-21
山东鲁班建设集团总公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing antifreeze has unstable quality during the use of concrete, such as alkali content, chlorine content and water reducing rate, etc. do not meet the specified indicators, affecting various technical problems such as concrete construction projects

Method used

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  • A compound type concrete antifreezer and a preparing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A composite antifreeze agent for concrete, which is prepared from the following raw materials in parts by weight: 45 parts of polycarboxylate water reducer, 16 parts of diethanol monoisopropanolamine maleate compound, 13 parts of lauroyl monoisopropanolamine Parts, 7 parts of diethylene triamine pentacarboxylate, 4 parts of sodium hexametaphosphate, 10 parts of sodium gluconate, 8 parts of N-methylolacrylamide, 3 parts of sodium tripolyphosphate, dinaphthyl methane disulfonic acid Sodium 4 parts, water 65 parts.

[0025] Described, diethanol monoisopropanolamine maleate compound is made by the following method: add diethanol monoisopropanolamine and maleic anhydride in the reactor, add catalyst, depressurize to 0.5MPa under stirring condition , heated to 95°C, keeping the system at a constant temperature, and the reaction stopped when there was no significant change in the acid value; naturally cooled to room temperature, washed with saturated sodium carbonate solution ...

Embodiment 2

[0035] A composite antifreeze agent for concrete, which is prepared from the following raw materials in parts by weight: 40 parts of polycarboxylate water reducer, 18 parts of diethanol monoisopropanolamine maleate compound, 15 parts of lauroyl monoisopropanolamine Parts, 8 parts of diethylene triamine pentacarboxylate, 3 parts of sodium hexametaphosphate, 12 parts of sodium gluconate, 6 parts of N-methylolacrylamide, 2 parts of sodium tripolyphosphate, dinaphthyl methane disulfonic acid Sodium 5 parts, water 60 parts.

[0036] Described, diethanol monoisopropanolamine maleate compound is made by the following method: add diethanol monoisopropanolamine and maleic anhydride in the reactor, add catalyst, depressurize to 0.5MPa under stirring condition , heated to 100°C, keeping the system at a constant temperature, and the reaction stopped when there was no significant change in the acid value; naturally cooled to room temperature, washed with saturated sodium carbonate solution...

Embodiment 3

[0046] A composite antifreeze agent for concrete is prepared from the following raw materials in parts by weight: 50 parts of polycarboxylate water reducer, 14 parts of diethanol monoisopropanolamine maleate compound, 10 parts of lauroyl monoisopropanolamine Parts, 6 parts of diethylene triamine pentacarboxylate, 5 parts of sodium hexametaphosphate, 8 parts of sodium gluconate, 10 parts of N-methylolacrylamide, 4 parts of sodium tripolyphosphate, dinaphthyl methane disulfonic acid 3 parts of sodium, 70 parts of water.

[0047]Described, diethanol monoisopropanolamine maleate compound is made by the following method: add diethanol monoisopropanolamine and maleic anhydride in the reactor, add catalyst, depressurize to 0.5MPa under stirring condition , heated to 90°C, kept the system at a constant temperature, and the reaction stopped when there was no significant change in the acid value; naturally cooled to room temperature, washed with saturated sodium carbonate solution and d...

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Abstract

The invention discloses a compound type concrete antifreezer. The concrete antifreezer is prepared from a polycarboxylate water reducing agent, N,N-bis(2-hydroxyethyl)isopropanolamine maleate compound, lauroyl monoisopropanolamine, salt of diethylenetriaminepentaacetic acid, sodium hexametaphosphate, sodium gluconate, N-hydroxymethyl acrylamide, sodium tripolyphosphate, sodium 1,1'-bi-2-naphthyl dimethanesulfonate and water. The invention also discloses a preparing method of the concrete antifreezer. Through reasonable compounding and synergistic effects for modulation, advantages and compounding advantages of multiple components of the concrete antifreezer are exerted to significantly improve application performance of concrete. The concrete antifreezer has antifreezing early strength, good adaptability and stable quality, can effectively avoid freeze injury accidents of concrete, can allow concrete to be unfrozen at -20 DEG C to -30 DEG C, and can meet requirements of various engineering.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a composite antifreeze agent for concrete and a preparation method thereof. Background technique [0002] The frost resistance durability of concrete has aroused the interest of scholars at home and abroad, not only because it is a very important factor affecting the service life and service quality of concrete, but also because the range of concrete frost damage is extremely wide. Our country has a vast territory, and a considerable part is in the severe cold zone, and many buildings have suffered from freeze-thaw damage. Concrete freeze-thaw damage is one of the main problems of building aging diseases in my country, which seriously affects the long-term use and safe operation of buildings. [0003] Concrete construction in winter, due to the difference between the concrete temperature and the outside air temperature, heat exchange will occur between the concrete an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/24C04B103/60
Inventor 高庆林马东晁兆国王明明
Owner 山东鲁班建设集团总公司
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