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High-stability low-alkaline liquid accelerator and preparation method thereof

A high-stability, quick-setting agent technology, applied in the field of concrete admixtures, can solve the problems of poor stability period, strong pungent odor, low strength retention rate, etc. good adaptability

Active Publication Date: 2019-01-01
GUIZHOU TIEJIANHENGFA NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The low-alkali liquid quick-setting agent prepared by the invention can solve the problems of poor stability of the quick-setting agent, low 28-day strength retention rate, strong pungent smell, poor adaptability, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] According to the mass percentage of each component of aluminum sulfate, sodium fluoride, stabilizer and water, first heat 285 grams of water to 55 ° C, and then add 90 grams of sodium fluoride to the above water in three batches, with an interval of 10 minutes each time, Stir for 30 minutes; then add 500 industrial-grade aluminum sulfate octadecahydrate in three batches, with an interval of 10 minutes each time, raise the temperature to 78 ° C, and stir for 60 minutes; add 35 grams of ethanolamine phosphate, stir for 30 minutes, cool to obtain a uniform and stable The liquid, obtains the high-stability low-alkali liquid quick-setting agent of the present invention.

Embodiment 2

[0014] According to the mass percentage of each component of aluminum sulfate, sodium fluoride, stabilizer and water, first heat 285 grams of water to 55 ° C, and then add 90 grams of sodium fluoride to the above water in three batches, with an interval of 10 minutes each time, Stir for 30 minutes; then add 500 g of industrial grade aluminum sulfate octadecahydrate in three batches, with an interval of 10 minutes each time, raise the temperature to 78 ° C, and stir for 60 minutes; add 35 grams of diethanolamine phosphate, stir for 30 minutes, cool to obtain a uniform stable liquid, that is, the high-stability and low-alkali liquid quick-setting agent of the present invention.

Embodiment 3

[0016] According to the mass percentage of each component of aluminum sulfate, sodium fluoride, stabilizer and water, first heat 285 grams of water to 55 ° C, and then add 90 grams of sodium fluoride to the above water in three batches, with an interval of 10 minutes each time, Stir for 30 minutes; then add 500 g of industrial grade aluminum sulfate octadecahydrate in three batches, with an interval of 10 minutes each time, raise the temperature to 78 ° C, and stir for 60 minutes; add 35 grams of triethanolamine phosphate, stir for 30 minutes, cool to obtain a uniform stable liquid, that is, the high-stability and low-alkali liquid quick-setting agent of the present invention.

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PUM

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Abstract

The invention discloses a high-stability low-alkaline liquid accelerator and a preparation method thereof. The accelerator is prepared from aluminum sulfate, sodium fluoride, a stabilizer and water; the accelerator is prepared from the components in percentage by mass: 45-60% of aluminum sulfate, 8-15% of sodium fluoride, 5-10% of stabilizer and the balance of water; the stabilizer is one or a mixture of multiple of o-phosphorylethanolamine, diethanolamide phosphate, triethanolamine phosphate, triethanolamine borate and boronized diethanolamide phosphate. The high-stability low-alkaline liquidaccelerator has the advantages that production raw materials are easy to obtain, no special requirements on required equipment exists, operation is simple, the long-term storage stability is good, the adaptability to cement types is wide, the mixing amount is less, setting speed is high, the strength is high, and the like.

Description

technical field [0001] The invention belongs to the technical field of concrete admixtures, and in particular relates to a high-stability and low-alkali liquid quick-setting agent and a preparation method thereof. Background technique [0002] Accelerator is a coagulation regulator that can accelerate the setting and hardening of cement or concrete. It is widely used in shotcrete, filling water-stop concrete and emergency repair and strengthening projects. There are many kinds of accelerators. According to the nature and state of accelerators, they can be roughly divided into four categories: alkaline powder, alkali-free powder, alkaline liquid and alkali-free (low-alkali) liquid. At present, both at home and abroad are gradually paying attention to the research and development of non-alkali (low alkali) liquid accelerators. Compared with traditional alkaline accelerators, it can reduce the skin corrosion of construction personnel, improve the adaptability to cement, and imp...

Claims

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Application Information

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IPC IPC(8): C04B24/12C04B103/12
CPCC04B40/0039C04B2103/12C04B22/148C04B22/126C04B24/122
Inventor 刘先勇李本秀陈娟许志顺王毓万国君陈凯陈尧
Owner GUIZHOU TIEJIANHENGFA NEW MATERIAL TECH CO LTD
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