Efficient compound water reducing agent for concrete and preparation method of efficient compound water reducing agent

Abstract

The invention discloses an efficient compound water reducing agent for concrete and a preparation method of the efficient compound water reducing agent. The efficient compound water reducing agent comprises, by weight, 13-18 parts of aromatic sulfamic acid formaldehyde condensate sodium salt, 11-16 parts of sulfonated humic acid-formaldehyde-sulfonated acetone polymer, 10-15 parts of polymer of 4-amino-sodium benzene sulfonate, formaldehyde and methylphenol, 7-11 parts of alkali lignin, 8-13 parts of sodium polystyrenesulfonate, 5-10 parts of calcium gluconate, 6-12 parts of propylene glycol alginate, 4-7 parts of mannitol, 4-8 parts of sodium lauryl sulfate and 5-10 parts of polyvinyl pyridine. The water reducing agent prepared by the method has the advantages that the water reducing agent is excellent in comprehensive performance, high in water reducing performance, high in early strength, high in reinforcing performance, low in shrinkage, high in slump loss resistance, and the like; the water reducing agent is suitable for high-durability concrete, self-leveling concrete, high-strength pump-delivery commodity concrete, underwater bored pile grouting concrete, bare concrete with high facing requirements, steam-cured concrete and the like.

Description

technical field

[0001] The invention relates to a high-efficiency composite water reducer for concrete and a preparation method thereof, belonging to the technical field of concrete admixtures. Background technique

[0002] Concrete has become the most commonly used building material in today's society, and concrete water reducer is one of the commonly used admixtures for concrete. It can greatly reduce the water consumption of concrete mixing under the condition of keeping the slump basically the same. It always has good workability during transportation and construction. With the development of concrete science and the improvement of engineering requirements, the performance requirements of concrete water reducers are getting higher and higher. At present, the traditional concrete water reducers mainly include lignosulfonate, melamine and naphthalenesulfonate formaldehyde condensate. , These superplasticizers have relatively single components, unsatisfactory performance, ...

Examples

Embodiment

[0012] A high-efficiency composite water reducer for concrete, consisting of the following raw materials in weight (kg): aromatic sulfamic acid formaldehyde condensate sodium salt 15, sulfonated humic acid-formaldehyde-sulfonated acetone polymer 13, 4-amino-benzene Polymer of sodium sulfonate with formaldehyde and methylphenol 12, alkali lignin 9, sodium polystyrene sulfonate 10, calcium gluconate 8, propylene glycol alginate 8, mannitol 5, sodium lauryl sulfate 6, polyvinylpyridine8.

[0013] A preparation method for concrete high-efficiency composite water reducer, comprising the following steps:

[0014] (1) The polymer of aromatic sulfamic acid formaldehyde condensate sodium salt, sulfonated humic acid-formaldehyde-sulfonated acetone polymer, 4-amino-benzenesulfonic acid sodium salt and formaldehyde and methylphenol is mixed evenly, then Put it into the ball mill, control the ball-to-material ratio to 6:1, rotate at 650r / min, dry ball mill for 6 hours, then add propylene ...

technical field

[0001] The invention relates to a high-efficiency composite water reducer for concrete and a preparation method thereof, belonging to the technical field of concrete admixtures. Background technique

[0002] Concrete has become the most commonly used building material in today's society, and concrete water reducer is one of the commonly used admixtures for concrete. It can greatly reduce the water consumption of concrete mixing under the condition of keeping the slump basically the same. It always has good workability during transportation and construction. With the development of concrete science and the improvement of engineering requirements, the performance requirements of concrete water reducers are getting higher and higher. At present, the traditional concrete water reducers mainly include lignosulfonate, melamine and naphthalenesulfonate formaldehyde condensate. , These superplasticizers have relatively single components, unsatisfactory performance, ...

Examples

Embodiment

[0012] A high-efficiency composite water reducer for concrete, consisting of the following raw materials in weight (kg): aromatic sulfamic acid formaldehyde condensate sodium salt 15, sulfonated humic acid-formaldehyde-sulfonated acetone polymer 13, 4-amino-benzene Polymer of sodium sulfonate with formaldehyde and methylphenol 12, alkali lignin 9, sodium polystyrene sulfonate 10, calcium gluconate 8, propylene glycol alginate 8, mannitol 5, sodium lauryl sulfate 6, polyvinylpyridine8.

[0013] A preparation method for concrete high-efficiency composite water reducer, comprising the following steps:

[0014] (1) The polymer of aromatic sulfamic acid formaldehyde condensate sodium salt, sulfonated humic acid-formaldehyde-sulfonated acetone polymer, 4-amino-benzenesulfonic acid sodium salt and formaldehyde and methylphenol is mixed evenly, then Put it into the ball mill, control the ball-to-material ratio to 6:1, rotate at 650r / min, dry ball mill for 6 hours, then add propylene ...

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