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Early strength polycarboxylic high performance water-reducing agent and preparation method thereof

A polycarboxylic acid, high-performance technology, applied in the field of concrete admixtures, can solve the problems of complex reaction, high reaction temperature, long reaction time, etc., and achieve the effects of simple operation, convenient preparation and low cost

Inactive Publication Date: 2016-07-27
四川恒泽建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polycarboxylate high-performance water reducer is one of the most important varieties of concrete admixtures. With the continuous increase in dosage, there are more and more types of polycarboxylate water reducers on the market. The preparation methods are also different. There are many kinds of raw materials, but basically there are many kinds of raw materials, complex reactions, long reaction times, and high reaction temperatures.

Method used

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  • Early strength polycarboxylic high performance water-reducing agent and preparation method thereof
  • Early strength polycarboxylic high performance water-reducing agent and preparation method thereof
  • Early strength polycarboxylic high performance water-reducing agent and preparation method thereof

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Effect test

Embodiment 1

[0031] Embodiment 1: a kind of early-strength type polycarboxylate high-performance water reducer, it is made up of the raw material of following weight part:

[0032] Methallyl polyoxyethylene ether: 200; demineralized water: 200; A liquid: 115; B liquid: 86;

[0033] Wherein, the composition of A liquid and B liquid is as shown in table 1:

[0034] Table 1: Composition of A liquid and B liquid in embodiment 1

[0035]

[0036] The preparation method of the above-mentioned early-strength polycarboxylate high-performance water reducer comprises the following steps;

[0037] S1: Weigh each raw material according to the above weight parts, and prepare A solution and B solution, and set aside;

[0038] S2: Slowly add methallyl polyoxyethylene ether into demineralized water, stir, and continue to stir for 0.5h after the addition, so that methallyl polyoxyethylene ether is fully dissolved, and then formulated to a mass percentage of 55% After heating up to 63°C, add solution ...

Embodiment 2

[0041] Embodiment 2: a kind of early-strength type polycarboxylate high-performance water reducing agent, it is made up of the raw material of following weight part:

[0042] Methallyl polyoxyethylene ether: 400; demineralized water: 300; A liquid: 164; B liquid: 137;

[0043] Wherein, the composition of A liquid and B liquid is as shown in table 2:

[0044] Table 2: Composition of A liquid and B liquid in embodiment 2

[0045]

[0046] The preparation method of the above-mentioned early-strength polycarboxylate high-performance water reducer comprises the following steps;

[0047] S1: Weigh each raw material according to the above weight parts, and prepare A solution and B solution, and set aside;

[0048] S2: Slowly add methallyl polyoxyethylene ether into demineralized water, stir, and continue to stir for 0.5h after the addition, so that methallyl polyoxyethylene ether is fully dissolved, and then formulated to a mass percentage of 60% After heating up to 67°C, add s...

Embodiment 3

[0051] Embodiment 3: a kind of early-strength type polycarboxylate high-performance water reducing agent, it is made up of the raw material of following weight part:

[0052] Methallyl polyoxyethylene ether: 300; demineralized water: 240; A liquid: 121.8; B liquid: 103.6;

[0053] Wherein, the composition of A liquid and B liquid is as shown in table 3:

[0054] Table 3: Composition of A liquid and B liquid in embodiment 3

[0055]

[0056]

[0057] The preparation method of the above-mentioned early-strength polycarboxylate high-performance water reducer comprises the following steps;

[0058] S1: Weigh each raw material according to the above weight parts, and prepare A solution and B solution, and set aside;

[0059]S2: Slowly add methallyl polyoxyethylene ether to demineralized water, stir, and continue to stir for 0.5h after the addition, so that methallyl polyoxyethylene ether is fully dissolved, and then formulated to a mass percentage of 50% After heating up t...

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Abstract

The invention discloses an early strength polycarboxylic high performance water-reducing agent and a preparation method thereof. The water-reducing agent comprises the following raw materials in parts by weight: 200-400 parts of methyl allyl polyethenoxy ether, 200-300 parts of softened water, 115-164 parts of liquid A and 86-137 parts of liquid B, wherein the liquid A comprises acrylic acid, sodium allysulfonate, sodium methylallyl sulfonate, 2-acrylamido-2-methylpropane sulfonic acid, acrylamide and water; the liquid B comprises ammonium persulfate and water. The obtained water-reducing agent has higher water-reducing rate, more importantly, the product has excellent early strength property, can be free of steam curing in construction of many projects and achieve excellent early strength effect and is especially suitable for special concrete construction of precast pipe sections for subways, precast members, and the like. The preparation method of the early strength polycarboxylic high performance water-reducing agent provided by the invention is simple to operate, is convenient in preparation and low in cost and is suitable for large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of concrete admixtures, in particular to an early-strength polycarboxylate high-performance water reducer and a preparation method thereof. Background technique [0002] High-performance water reducer is an indispensable component for the preparation of high-performance concrete. The high performance of the water reducing agent means that it not only has a high water reducing rate and the performance of maintaining the slump of concrete for a long time, but also makes the configured concrete have good mechanical properties and excellent durability. The improvement of the performance of water reducing agent can not only improve the mechanical properties of high performance concrete to a great extent, but also further improve the construction performance. Polycarboxylate high-performance water reducer represents the future development direction of concrete admixture due to its excellent performance and enviro...

Claims

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Application Information

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IPC IPC(8): C08F283/06C08F220/06C08F228/02C08F220/58C08F220/56C04B24/16C04B103/30
CPCC08F283/065C04B24/165C04B2103/302C08F2400/02C08F220/06
Inventor 任豪贾维龙陈鹏明滕文生董浩成
Owner 四川恒泽建材有限公司
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