Concrete water reducer and preparation method thereof

Abstract

The invention relates to a concrete water reducer, which is composed of the following raw materials by weight: 10-20 parts of an SC-11 type polycarboxylate superplasticizer, 20-30 parts of a melamineSM superplasticizer, 10-18 parts of a KJ superplasticizer, 4-17 parts of triethanolamine alginate, 6-15 parts of polyglutamic acid, 3-8 parts of sodium tripolyphosphate, 6-18 parts of carboxymethyl chitosan, 3-10 parts of triethanolamine, 2-6 parts of potassium fulvate, 5-14 parts of xanthan gum, 2-5 parts of metolachlor, 1-3 parts of animal hair hydrolysate, 1-3 parts of sodium silicate, 4-12 parts of pentasodium diethylenetriamine pentaacetate and 1-3 parts of dodecenylsuccinic acid diethanolamide. The preparation method of the water reducer includes: mixing the substances, then adding the mixture into a ball mill, performing dry ball milling, then adding the product into an ultrasonic oscillator, and conducting stirring and bagging to obtain a finished product. The water reducer has excellent mud resistance, so that concrete can have high fluidity, small slump loss and high compressive strength.

Description

Technical field [0001] The invention relates to the technical field of concrete admixtures, in particular to a concrete water reducer and a preparation method thereof. Background technique [0002] Concrete has become one of the most commonly used building materials in today’s society, and concrete water-reducing agent refers to the ability to reduce mixing water and increase concrete strength under the conditions of concrete workability and cement consumption constant; Under the condition of constant strength, the admixture of cement can be saved. 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, traditional concrete water reducers mainly include lignosulfonates, melamines and naphthalenesulfonic acid formaldehyde condensates. Although these water reducers have many advantages, they are greatly affected by the mud content of the sand in the ...

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. Although these superplasticizers have many advantages, they are greatly affected by the mud content of the sand in the concrete, and are very sensitive to the mud content. With the increase of the mud content, the flow performance and slump retention performance of the concrete are significantly reduced. It cannot meet the requirements of high-performance concrete, so it is necessary to produce high-performance water reducer