Polycarboxylate-type water reducing agent and amino-type water reducing agent compounding process

Abstract

The invention relates to the technical field of concrete admixtures, and particularly discloses a polycarboxylate-type water reducer and amino-type water reducer compounding process which comprises the following process steps: step 1, weighing raw materials, namely weighing a polycarboxylate-type water reducer, an amino-type water reducer and a compounding agent respectively by using different metering tanks, step 2, mixing the raw materials and reacting, and step 3, preparing the polycarboxylate-type water reducer and the amino-type water reducer. The preparation method comprises the following steps: firstly, adding the weighed polycarboxylate-type water reducer into a reaction kettle, then adding the auxiliary agent into the reaction kettle, and adding the amino-type water reducer after the polycarboxylate-type water reducer and the auxiliary agent completely react; a mounting structure on the reaction kettle is optimized, so that the influence on production is reduced, 3, homogenizing treatment is performed, and 4, storage is performed. The scheme is used for solving the problem of high mud-containing sensitivity of a polycarboxylic acid water reducer in the prior art.

Description

technical field [0001] The invention relates to the technical field of concrete admixtures, in particular to a composite process of a polycarboxylic acid-based water-reducing agent and an amino-based water-reducing agent. Background technique [0002] Water reducer is a very important admixture in concrete admixtures. The classification of water reducer mainly includes lignin water reducer, naphthalene water reducer, melamine water reducer, amino water reducer and polymer water reducer. Carboxylic acid-based superplasticizers, etc. Among them, polycarboxylate-based superplasticizers have the properties of high water-reducing rate, low shrinkage rate, high strength, low bleeding and small slump loss, while amino-based superplasticizers are very important for dispersibility. , slump retention and other properties are higher than other superplasticizers; the selection of superplasticizers needs to be determined according to the characteristics of other materials for preparing c...

AI Technical Summary

Problems solved by technology

[0004] The present invention intends to provide a composite process of polycarboxylate-based water-reducers and amino-based water-reducers to solve the problem of high mud sensitivity in polycarboxylate-based water-reducers in the prior art

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