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Alkali-free liquid accelerator

A technology of quick-setting agent and liquid, which is applied in the field of non-alkali liquid accelerator, which can solve the impact of concrete type and batch, unfavorable liquid non-alkali accelerator is widely used, and the matching items of liquid non-alkali accelerator are not very good and other problems, to overcome the obvious decline in strength in the later period, good storage stability, and improve storage stability

Pending Publication Date: 2021-06-11
陳森章
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual use, it was found that the liquid alkali-free accelerator does not match the existing concrete very well, and is seriously affected by the type and batch of concrete, which is not conducive to the widespread use of liquid alkali-free accelerator

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] An alkali-free liquid quick-setting agent, comprising the following raw materials in parts by weight: 30 parts of sulfate; 10 parts of polyferric sulfate; 10 parts of alkaline silica sol; 5 parts of alcohol amine; 2 parts of fluorosilicate; suspending agent 1 part; thickener 1 part; pH regulator 1 part; defoamer 1 part.

[0025] The sulfate is polyaluminum sulfate; the alcohol amine is diethanolamine; the suspending agent is hydroxypropyl starch ether; the thickener is modified aluminum magnesium silicate; the pH regulator is ethylenediamine; the defoamer is silicone defoaming agent; fluorosilicate is magnesium fluorosilicate;

[0026] Alkali-free liquid quick-setting agent, the preparation method comprises the following steps:

[0027] (1) Mix the sulfate and fluorosilicate in parts by weight, add water with 0.6 times the parts by weight of sulfate, and fully dissolve in a constant temperature water bath at 60°C to obtain solution A;

[0028] (2) Mix the polyferric s...

Embodiment 2

[0031] An alkali-free liquid quick-setting agent, comprising the following raw materials in parts by weight: 50 parts of sulfate; 20 parts of polyferric sulfate; 30 parts of alkaline silica sol; 10 parts of alcohol amine; 8 parts of fluorosilicate; suspending agent 5 parts; 10 parts of thickener; 5 parts of pH regulator; 5 parts of defoamer.

[0032] Sulfate is polyaluminum sulfate, polymagnesium sulfate; alcohol amine is diethanolamine, triethanolamine; suspending agent is hydroxypropyl starch ether, graphene oxide; thickener is modified aluminum magnesium silicate, bentonite; pH regulator is Ammonia; defoamer is polyether defoamer; fluorosilicate is magnesium fluorosilicate, zinc fluorosilicate;

[0033] Alkali-free liquid quick-setting agent, the preparation method comprises the following steps:

[0034] (1) Mix the sulfate and fluorosilicate in parts by weight, add water with 0.8 times the parts by weight of sulfate, and fully dissolve in a constant temperature water bath...

Embodiment 3

[0038] An alkali-free liquid quick-setting agent, comprising the following raw materials in parts by weight: 40 parts of sulfate; 15 parts of polyferric sulfate; 20 parts of alkaline silica sol; 7 parts of alcohol amine; 5 parts of fluorosilicate; suspending agent 3 parts; 5 parts of thickener; 3 parts of pH regulator; 3 parts of defoamer.

[0039] The sulfate is polyaluminum sulfate, polymagnesium sulfate, iron sulfate; the alcohol amine is diethanolamine; the suspending agent is sodium polyacrylate; the thickener is modified aluminum magnesium silicate, aluminum silicate; the pH regulator is ethylenediamine; The defoamer is a silicone defoamer; the fluorosilicate is magnesium fluorosilicate;

[0040] The preparation method of alkali-free liquid quick-setting agent is the same as that in Example 1.

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Abstract

The invention relates to the technical field of building materials, in particular to an alkali-free liquid accelerator. The accelerator comprises the following raw materials in parts: 30-50 parts of sulfate, 5-10 parts of alcohol amine, 1-5 parts of a suspending agent, 1-10 parts of a thickening agent, 1-5 parts of a pH regulator, 1-5 parts of a defoaming agent, 2-8 parts of fluosilicate, 10-20 parts of polymeric ferric sulfate salt, and 10-30 parts of alkaline silica sol. The invention aims to provide the alkali-free liquid accelerator, and the accelerator is good in compatibility with various types of concrete, wide in adaptability, capable of effectively inhibiting precipitation, good in storage stability and free of influence on the uniformity of sprayed concrete; and the accelerator has no corrosion and special smell, and has no adverse effect on constructors.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an alkali-free liquid accelerator. Background technique [0002] Accelerator is used in the construction industry and plays an important role in the quick setting and early strength of concrete. Since its invention, it has quickly become one of the indispensable materials in shotcrete. The type and quality of accelerators affect the quality of concrete, and countries strictly control the quality of accelerators for shotcrete. Accelerators are divided into two types, powder accelerators and liquid accelerators. Accelerators in different states have different application scenarios. Liquid accelerators are mostly used in modern concrete tank trucks. At present, the relatively mature accelerators in China are alkaline accelerators or low-alkali accelerators. Because they are alkaline or weakly alkaline, they are corrosive to a certain extent. Under long-term action, they ...

Claims

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Application Information

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IPC IPC(8): C04B24/38C04B103/12
CPCC04B40/0039C04B2103/12C04B22/142C04B22/149C04B22/06C04B24/122C04B22/126C04B2103/50C04B2103/44C04B2103/0094C04B24/38C04B24/26
Inventor 陈森章
Owner 陳森章
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