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Concrete water reducer and preparation method thereof

A concrete water-reducing agent and water-reducing agent technology, applied in the field of water-reducing agents, can solve the problems of large amount of water-reducing agent, poor plasticizing effect, poor water-reducing effect, etc. The effect of improving cohesion and workability

Inactive Publication Date: 2018-01-05
山东天汇科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the purpose of the present invention is to provide a concrete water reducer and its preparation method, which can solve the technical problems of large amount of water reducer, poor water reducing performance and poor plasticizing effect at present.

Method used

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  • Concrete water reducer and preparation method thereof
  • Concrete water reducer and preparation method thereof
  • Concrete water reducer and preparation method thereof

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preparation example Construction

[0043] The present invention also provides a preparation method of concrete water reducing agent, comprising the following steps:

[0044] Weigh each raw material, add polycarboxylate water reducer, ethanolamine, and silicone oil into the polyol, stir at 400-600 r / min for 10-15 min, and add polyether polyol, polyether polyol and polyol under stirring at 100-200 r / min. Acrylic fiber, sodium dioctyl dibutyrate sulfonate, silicon dioxide, calcium formate, sucrose, retarder, air-entraining agent and water, fully ball-milled and cooled to obtain concrete water reducing agent.

[0045] Among them, polycarboxylate superplasticizer, polyol, polyether polyol, ethanolamine, polypropylene fiber, sodium dioctyl dibutyrate sulfonate, silicon dioxide, calcium formate, silicone oil, sucrose, retarder, air-entrained The agent and water are the same as above, and will not be repeated here.

[0046] In the above technical solution, the process is simple, the prepared waterproof coil material h...

Embodiment 1

[0049] The concrete water reducing agent includes the following raw materials in parts by weight:

[0050] 11 parts of acrylic polycarboxylate water reducer, 19 parts of ethylene glycol, 7.5 parts of polyoxypropylene glycol, 8 parts of triethanolamine, 5.5 parts of polypropylene fiber, 4.4 parts of sodium dioctyl dibutyrate sulfonate, 16 parts Silica, 5.8 parts of calcium formate, 6 parts of methyl ethoxy silicone oil, 11 parts of sucrose, 1.9 parts of citric acid, 0.14 parts of calcium lignosulfonate and 100 parts of water; the particle size of the silica is 200 nm.

[0051] The preparation method of concrete water reducing agent comprises the following steps:

[0052] Weigh each raw material according to the above-mentioned parts by weight, add acrylic polycarboxylate water reducer, triethanolamine and methyl ethoxy silicone oil into ethylene glycol, stir at 600r / min for 12min, and stir at 150r / min Add polyoxypropylene glycol, polypropylene fiber, sodium dioctyl dibutyrate ...

Embodiment 2

[0054] The concrete water reducing agent includes the following raw materials in parts by weight:

[0055] 10 parts of acrylic polycarboxylate water reducer, 23 parts of propylene glycol, 7 parts of polytetrahydrofuran diol, 9 parts of N-methyldiethanolamine, 5.8 parts of polypropylene fiber, 5 parts of sodium dioctyl dibutyrate sulfonate, 15 parts of parts of silicon dioxide, 5 parts of calcium formate, 7 parts of methyl vinyl silicone oil, 10 parts of sucrose, 1.5 parts of sugar calcium, 0.16 parts of rosin soap and 110 parts of water; the particle size of the silicon dioxide is 100-200 nm.

[0056] The preparation method of concrete water reducing agent comprises the following steps:

[0057] Weigh each raw material according to the above-mentioned parts by weight, add acrylic polycarboxylate water reducer, N-methyldiethanolamine, methyl vinyl silicone oil to propylene glycol, stir at 500r / min for 12min, and stir at 150r / min Add polytetrahydrofuran diol, polypropylene fibe...

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Abstract

The invention discloses a concrete water reducer and a preparation method thereof. The water reducer is prepared from the following raw materials in parts by weight: 10-15 parts of polycarboxylic acidwater reducer, 18-24 parts of polyalcohol, 7-10 parts of polyether polyol, 8-13 parts of ethanolamine, 5-7 parts of polypropylene fibers, 4-5 parts of sodium dibutyl dioctyl sulfonate, 15-20 parts ofsilicon dioxide, 5-7 parts of calcium formate, 6-9 parts of silicone oil, 9-14 parts of saccharose, 1.5-2.5 parts of setting retarder, 0.1-0.2 part of air entraining agent and 100-150 parts of water.According to the concrete water reducer and the preparation method thereof, all the raw materials are in synergism, thus, the mixed amount of the water reducer can be reduced, the water reducing rateis improved, the slump of the concrete can be remarkably improved, the cohesiveness and workability of the concrete are improved, and pumping requirements of the concrete are met; the water reducer disclosed by the invention and a concrete material are used in a combined manner, and the chemical corrosion resistance, durability, fluidity and folding strength of the concrete can be greatly improved, so that the water reducer can be extensively applied to the in-place casting of concrete constructions such as high-rise buildings, wide-span bridges, offshore oil production platforms and nuclearpower plants with requirements on high durability, high fluidity, high strength guarantee rate and the like and commercial concrete.

Description

technical field [0001] The invention relates to the field of water-reducing agents, in particular to a concrete water-reducing agent and a preparation method thereof. Background technique [0002] Concrete water-reducing agent refers to a substance added to improve the performance of concrete before or during the mixing of concrete. Because water reducer can effectively improve the performance of concrete and has good economic benefits, it has been widely used in many countries, and its application in engineering has received more and more attention, and it has become an indispensable material in concrete. The water reducing agent can reduce the amount of mixing water and improve the strength of concrete under the condition of constant workability and cement dosage; or save cement dosage under the condition of constant workability and strength. However, the water reducing agents currently used in the market have the disadvantages of large dosage, poor water reduction and po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/42C04B103/30
Inventor 周俊华尹方勇王峰王超魏岱慈田新博朱文沛
Owner 山东天汇科技有限公司
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