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Anti-freezing concrete water reducer

A technology of concrete water reducing agent and water reducing agent, which is applied in the field of concrete admixture, which can solve the problems of rising production cost, increasing the amount of antifreeze, and increasing water demand, and achieve the effects of reducing water demand, lowering freezing point, and promoting hydration

Active Publication Date: 2013-11-13
SHANGHAI SUNRISE POLYMER MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The antifreeze uses a large amount of calcium formate and low-molecular alcohol, these components will cause an increase in water demand, increase the amount of antifreeze, and lead to an increase in production costs

Method used

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  • Anti-freezing concrete water reducer

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Weigh 49.80kg of water and put it in the reaction kettle, then add 10.00kg of sodium nitrite under stirring state, and add 40.00kg of 40% solid content polycarboxylate superplasticizer (VIVID-500 (D type) after it is completely dissolved. The average molecular weight is 31200, produced by Shanghai Sanrui Polymer Material Co., Ltd.), then add 0.20kg of lauryl alcohol ether AS-2, and continue to stir evenly to obtain the water reducer of the present invention, which is recorded as AT-1.

Embodiment 2

[0034] Weigh 53.80kg of water and put it in the reaction kettle, then add 8.00kg of sodium nitrite, 2.00kg of sodium nitrate and 2.00kg of sodium sulfate successively under stirring, and add 2.00kg of sodium gluconate after the inorganic salt is completely dissolved, and then add 32.00kg 40% solid content polycarboxylate superplasticizer (VIVID-500 (D type), weight average molecular weight 31200, produced by Shanghai Sanrui Polymer Material Co., Ltd.), then add 0.20kg lauryl alcohol ether AS- 2. After continuing to stir evenly, the water reducer of the present invention is obtained, which is designated as AT-2.

Embodiment 3

[0036] Weigh 43.80kg of water and put it in the reaction kettle, then add 12.00kg of sodium nitrite, 2.00kg of sodium sulfate and 5.00kg of calcium nitrite successively under stirring, and add 3.00kg of sodium gluconate after the inorganic salt is completely dissolved, and then Add 48.00kg of 40% solid content polycarboxylate superplasticizer (VIVID-500 (D type), weight average molecular weight 31200, produced by Shanghai Sanrui Polymer Material Co., Ltd.), and then add 0.10kg of lauryl alcohol ether AS -2. After continuing to stir evenly, the water reducer of the present invention is obtained, which is designated as AT-3.

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Abstract

The invention discloses anti-freezing concrete water reducer, which is made by mixing polycarboxylic acid water reducer, inorganic sodium salt, inorganic calcium salt, low-molecule alcohol, retarder and air entraining admixture. The anti-freezing concrete water reducer has the advantages of low dopant, high water reduction, fine slump maintenance and excellent anti-freezing effect.

Description

technical field [0001] The invention relates to the technical field of concrete admixtures in building materials, in particular to an antifreeze concrete water reducer. Background technique [0002] Concrete is one of the most important materials in civil engineering today, providing strength and durability to buildings. With the high development of the construction industry, there are more and more concrete constructions in winter, and the winter temperature in most parts of our country is below 0°C, and the temperature in the northeast and northwest regions can sometimes reach minus 20-30°C. In order to increase the strength of concrete under negative temperature conditions, most projects adopt the method of adding antifreeze to the concrete. [0003] At present, the commonly used concrete antifreeze agents are all formulated with water-reducing components, early-strength components, antifreeze components and air-entraining components. The mechanism of action is: use the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/24C04B103/30
Inventor 郑柏存邓最亮冯中军傅乐峰
Owner SHANGHAI SUNRISE POLYMER MATERIAL CO LTD
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