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Immobilization treatment method of liquid-state polycarboxylate superplasticizer

A processing method and technology of superplasticizer, which are applied in the field of preparation and application of solid polycarboxylate superplasticizer, can solve the problems of prolonged cement setting time, influence of the performance of the original superplasticizer, and larger amount of fly ash added. , to achieve the effect of easy acquisition of raw materials, simple and easy preparation process and low cost

Active Publication Date: 2017-02-22
山西奥瑞特建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the research found that the adsorption amount of fly ash to the active ingredients of polycarboxylate superplasticizer is too large, which will undoubtedly affect the performance of the original superplasticizer to a certain extent.
At the same time, the addition of fly ash will make the setting time of cement longer, and the amount of fly ash added will also reduce the strength of concrete, especially the early strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A solid-phase treatment method for a liquid polycarboxylate water reducer is carried out according to the following steps:

[0030] (1) According to the mass ratio, slag in the fine-grained range (1-10 μm): liquid PC4000 ester polycarboxylate superplasticizer = 1:1, reduce the slag in the fine-grained range (1-10 μm) and liquid polycarboxylic acid Mix the water agent evenly, put it in the cold room of the refrigerator, and dry it at 5°C for 3 days to initially remove the water in the liquid polycarboxylate water reducer to obtain a water reducer-slag mixture.

[0031] (2) Take out the water reducer-slag mixture in (1), place it in an oven, and dry it at 60°C for 50 hours to completely remove the water in the water reducer-slag mixture to obtain solid powder PC4000 polycarboxylate Acid superplasticizer.

[0032] The prepared solid powder PC4000 polycarboxylate water reducer has a water reducing rate of 34%; the compressive strength of concrete 28d prepared with the soli...

Embodiment 2

[0034] A solid-phase treatment method for a liquid polycarboxylate water reducer is carried out according to the following steps:

[0035] (1) According to the mass ratio, slag in the fine-grained range (1-10 μm): liquid PC3600 ether polycarboxylate superplasticizer = 1:1, reduce the slag in the fine-grained range (1-10 μm) and liquid polycarboxylic acid Mix the water agent evenly, put it in the cold room of the refrigerator, and dry it at 15°C for 2 days to preliminarily remove the water in the liquid PC3600 polycarboxylate water reducer to prepare the water reducer-slag mixture.

[0036](2) Take out the water reducer-slag mixture in (1), place it in an oven, and dry it at 75°C for 48 hours to completely remove the water in the water reducer-slag mixture to obtain solid powder PC3600 polycarboxylate Acid superplasticizer.

[0037] The prepared solid powder PC3600 polycarboxylate superplasticizer has a water reducing rate of 36%; the compressive strength of concrete 28d prepa...

Embodiment 3

[0039] A solid-phase treatment method for a liquid polycarboxylate water reducer is carried out according to the following steps:

[0040] (1) According to the mass ratio, slag in the middle particle size range (10-20 μm): liquid PC8000 ether polycarboxylate water reducer = 1:1, and the slag in the particle size range (10-20 μm) and liquid polycarboxylate water reducer Mix the agent evenly, put it in the cold room of the refrigerator, and dry it at 15°C for 2 days to initially remove the water in the PC8000 ether polycarboxylate water reducer to prepare the water reducer-slag mixture.

[0041] (2) Take out the water reducer-slag mixture in (1), place it in an oven, and dry it at 100°C for 48 hours to completely remove the water in the water reducer-slag mixture to obtain solid powder PC8000 polycarboxylate Acid superplasticizer.

[0042] The prepared solid powder PC8000 polycarboxylate superplasticizer has a water reducing rate of 37%; the compressive strength of concrete 28d...

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Abstract

The invention discloses an immobilization treatment method of liquid-state polycarboxylate superplasticizer, and belongs to the technical field of preparation and application of solid polycarboxylate superplasticizer. The method includes steps of evenly mixing mineral slag with liquid-state polycarboxylate superplasticizer; performing low-temperature drying treatment to preliminarily remove moisture in the liquid water reducer; then drying the evenly blended water reducer-mineral slag mixture; completely removing moisture in the liquid-state polycarboxylate superplasticizer; obtaining the solid water reducer product. After immobilization treatment on the liquid-state polycarboxylate superplasticizer, the water reducing rate is 34-38%; the compressive strength of concrete for 28d prepared by the treated polycarboxylate superplasticizer is 57.9 MPa above, thus every performance of original liquid-state polycarboxylate superplasticizer is not influenced; the method is advantageous of being simple in operation and convenient to practice. The method applies the mineral slag which is the one of industrial 'three wastes'; the raw material is easy to obtain, the cost is low; besides, the method is energy-saving and environmental-friendly, and complies with the green sustainable development principle vigorously advocated by our country.

Description

technical field [0001] The invention relates to the technical field of preparation and application of a solid polycarboxylate water reducer, in particular to a solid phase treatment method of a liquid polycarboxylate water reducer. Background technique [0002] In recent years, the research and production of admixtures have been increasingly advanced, and traditional concrete will be replaced by high-performance concrete. The water reducing agent is one of the most widely used and used components in the admixture, and it is an indispensable and important part of the preparation of high-performance concrete. At present, my country's traditional high-performance water-reducing agents include: modified wood calcium, naphthalene-based, melamine, etc., which are difficult to meet the performance requirements of high-performance concrete for water-reducing agents. Polycarboxylate superplasticizer is a kind of superplasticizer with good comprehensive performance. Its high water re...

Claims

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Application Information

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IPC IPC(8): C04B20/02C04B24/24C04B103/30
CPCC04B20/02C04B2103/302C04B2201/50C04B24/24
Inventor 赵苏关达人王若楠于飞
Owner 山西奥瑞特建材科技有限公司
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