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Concrete composite type superplasticizer

A high-efficiency water reducer and composite technology, applied in the field of water reducer, to achieve strong slump performance, overcome poor dispersion, and prolong the setting time

Inactive Publication Date: 2019-11-01
江苏博思通新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a composite high-efficiency water reducer for concrete, which solves the problems of effectively improving the mechanical properties of concrete and improving the comprehensive quality of concrete

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Fully stir and dissolve 35 parts of β-naphthalenesulfonate formaldehyde condensate and 30 parts of polyacrylic acid ether polymer in a reaction kettle at 80 degrees Celsius to obtain the first mixture, 4 parts of sodium tripolyphosphate, 5 parts of potassium sodium tartrate , 2 parts of sucrose, 5 parts of cellulose ether, 4 parts of lignosulfonate, 4 parts of acrylic acid, 75 parts of hydrogen peroxide and 4 parts of Glauber's salt are put into a stirrer and stirred, wherein the stirring speed of the stirrer is 2500 rpm, and the stirring time The second mixture was obtained in 75 minutes, and the second mixture was gradually added to the reactor within 4 hours through the peristaltic pump, and stirred while mixing with the first mixture to obtain the third mixture, and the third mixture was kept for 5 hours and kept warm. After completion, naturally cool to room temperature to obtain the material.

Embodiment 2

[0028] Fully stir and dissolve 20 parts of β-naphthalenesulfonate formaldehyde condensate and 10 parts of polyacrylic acid ether polymer in a reaction kettle at 60 degrees Celsius to obtain the first mixture, 3 parts of sodium tripolyphosphate, 1 part of potassium sodium tartrate , 1 part of sucrose, 0.5 part of cellulose ether, 2 parts of lignosulfonate, 3 parts of acrylic acid, 30 parts of hydrogen peroxide and 2 parts of Glauber's salt are put into a stirrer and stirred, wherein the stirring speed of the stirrer is 1500 rpm, and the stirring time The second mixture was obtained in 35 minutes, and the second mixture was gradually added to the reactor within 4 hours through the peristaltic pump, and stirred while mixing with the first mixture to obtain the third mixture, and the third mixture was kept for 3 hours and kept warm. After completion, naturally cool to room temperature to obtain the material.

Embodiment 3

[0030] Fully stir and dissolve 30 parts of β-naphthalenesulfonate formaldehyde condensate and 20 parts of polyacrylic acid ether polymer in a reaction kettle at 75 degrees Celsius to obtain the first mixture, 3 parts of sodium tripolyphosphate, 3 parts of potassium sodium tartrate , 1 part of sucrose, 3 parts of cellulose ether, 3 parts of lignosulfonate, 4 parts of acrylic acid, 55 parts of hydrogen peroxide and 3 parts of Glauber's salt are put into a stirrer and stirred, wherein the stirring speed of the stirrer is 2000 rpm, and the stirring time The second mixture was obtained in 60 minutes, and the second mixture was gradually added to the reactor within 4 hours through the peristaltic pump, and stirred while mixing with the first mixture to obtain the third mixture, and the third mixture was kept for 4 hours and kept warm. After completion, naturally cool to room temperature to obtain the material.

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PUM

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Abstract

The invention discloses a concrete composite type superplasticizer, wherein the formula component comprises the following components in parts by mass: 20-35 parts of beta-naphthalene sulfonated formaldehyde condensate, 10-30 parts of polyacrylic acid ether polymer, 3-4 parts of sodium tripolyphosphate, 1-5 parts of potassium sodium tartrate, 1-2 parts of sucrose, 0.5-5 parts of cellulose ether, 2-4 parts of lignin sulfonate, 3-4 parts of acrylic acid, 30-75 parts of hydrogen peroxide and 2-4 parts of mirabilite. The beta-naphthalene sulfonated formaldehyde condensate and the polyacrylic acid ether polymer are set, and under the action of sodium tripolyphosphate, the two kinds of different water reducers are effectively mixed, the slump of concrete is improved and the setting time can be prolonged, and the cellulose ether is added, so that the polycarboxylic acid water reducer can be modified by introducing the cellulose ether-containing monomer and the stereo-hindrance effect of the water reducer can be improved. Meanwhile, the water retention property of cellulose ether can also help disperse cement particles to improve the fluidity of slurry.

Description

technical field [0001] The invention relates to the technical field of water reducers, in particular to a composite high-efficiency water reducer for concrete. Background technique [0002] Water reducer is a concrete admixture that can reduce the amount of mixing water while maintaining the slump of the concrete basically unchanged. Most of them belong to anionic surfactants, including lignosulfonate and naphthalenesulfonate formaldehyde polymers. Etc. After being added to the concrete mixture, it can disperse the cement particles, improve its workability, reduce the unit water consumption, improve the fluidity of the concrete mixture, or reduce the unit cement consumption and save cement. [0003] The common superplasticizers on the market are mainly divided into: naphthalene-based superplasticizers, aliphatic superplasticizers, amino superplasticizers and polycarboxylic acid superplasticizers. Each has its own characteristics and disadvantages. In order to improve the me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38C04B103/30
CPCC04B40/0039C04B2103/302C04B24/226C04B24/26C04B22/16C04B24/06C04B24/10C04B24/383C04B24/18C04B24/04C04B22/068C04B22/147
Inventor 于浩
Owner 江苏博思通新材料有限公司
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