High slump loss resistant concrete water reducer and preparation method thereof

Abstract

The invention discloses a high slump loss resistant concrete water reducer and a preparation method thereof. The water reducer is composed of the following raw materials in parts by weight: 9 to 14 parts of aliphatic hydroxyl sulfonate condensate, 7 to 11 parts of sodium beta-naphthalene sulfonate-formaldehyde condensate, 5 to 9 parts of sulfonated phenolic resin, 3 to 6 parts of casein, 6 to 10 parts of MPEGMA-MA-SMAS terpolymer, 4 to 8 parts of ammonium alginate, 8 to 12 parts of potassium humate, 4 to 7 parts of calcium chloride, 5 to 10 parts of sodium hydroxypropyl oxidized starch succinate, and 3 to 6 parts of sodium dodecyl benzene sulfonate. The water reducer prepared from aliphatic hydroxyl sulfonate condensate, sulfonated phenolic resin, MPEGMA-MA-SMAS terpolymer, and the like, has a strong slump retaining performance, overcomes the shortage that the slump loss of a high efficient water reducer is large, has the advantages of strong dispersion performance, high early strength, and good anti-permeability performance, and is especially suitable for preparing high slump loss resistant, high strength and durable concrete projects.

Description

technical field [0001] The invention relates to a high-slump-retaining concrete water reducer 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, poor slum...

AI Technical Summary

Problems solved by technology

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, poor slump retention capacity, and large slump loss, which cannot meet the requirements of high-performance concrete.

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