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Preparation method of alkali-free accelerator

A technology of quick-setting agent and preparation steps, which is applied in the field of preparation of alkali-free quick-setting agent, and can solve problems such as poor stability, polluting the environment, and large loss of strength of hardened slurry

Inactive Publication Date: 2018-08-21
CHANGZHOU LANXU CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main technical problem to be solved by the present invention is to provide a preparation method of an alkali-free accelerator for the shortcomings of the current traditional accelerators, such as excessively high alkali content, large strength loss in the later stage of hardening slurry, environmental pollution, and poor stability

Method used

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  • Preparation method of alkali-free accelerator

Examples

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Effect test

example 1

[0020] Take a fresh coconut, use a hole opener to make a round hole with a diameter of 5cm on the coconut shell, pour out the coconut juice for later use, chop the young ginger and wrap it with gauze, press the gauze with a stone and squeeze it, and collect the gauze Ginger juice flowing out of the medium, mix the ginger juice and spare coconut milk at a volume ratio of 3:10 to obtain a mixed solution; take fresh buffalo milk, pour it into a pot and boil it, and pour the boiled buffalo milk into the above-mentioned opened coconut milk In the shell, when the buffalo milk is cooled to 50°C, pour the above mixture of 3 times the mass of buffalo milk into the coconut shell, put the coconut shell in the refrigerator, let it stand at 4°C for 40 minutes, cut the coconut shell and filter , separated and removed the filtrate to obtain a gel-like product; put the gel-like product into a tissue pulverizer, pulverize it for 20 minutes to obtain a pulverized product, put the pulverized prod...

example 2

[0022] Take a fresh coconut, use a hole opener to make a round hole with a diameter of 5cm on the coconut shell, pour out the coconut juice for later use, chop the young ginger and wrap it with gauze, press the gauze with a stone and squeeze it, and collect the gauze Ginger juice flowing out of the medium, mix the ginger juice and spare coconut milk at a volume ratio of 3:10 to obtain a mixed solution; take fresh buffalo milk, pour it into a pot and boil it, and pour the boiled buffalo milk into the above-mentioned opened coconut milk In the shell, when the buffalo milk is cooled to 55°C, pour the above mixed solution that is 4 times the mass of the buffalo milk into the coconut shell, put the coconut shell in the refrigerator, let it stand at 5°C for 45 minutes, cut the coconut shell and filter , separated and removed the filtrate to obtain a gel-like product; put the gel-like product into a tissue pulverizer, pulverize it for 25 minutes to obtain a pulverized product, put the...

example 3

[0024]Take a fresh coconut, use a hole opener to make a round hole with a diameter of 5cm on the coconut shell, pour out the coconut juice for later use, chop the young ginger and wrap it with gauze, press the gauze with a stone and squeeze it, and collect the gauze Ginger juice flowing out of the medium, mix the ginger juice and spare coconut milk at a volume ratio of 3:10 to obtain a mixed solution; take fresh buffalo milk, pour it into a pot and boil it, and pour the boiled buffalo milk into the above-mentioned opened coconut milk In the shell, when the buffalo milk is cooled to 60°C, pour the above mixed solution that is 5 times the mass of the buffalo milk into the coconut shell, put the coconut shell in the refrigerator, let it stand at 6°C for 50 minutes, cut the coconut shell and filter , separate and remove the filtrate to obtain a gel-like product; put the gel-like product into a tissue pulverizer, pulverize for 30 minutes to obtain a pulverized product, put the pulve...

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Abstract

The invention relates to a preparation method of an alkali-free accelerator, and belongs to the technical field of cement additives. The preparation method comprises the following steps: heating buffalo milk with high milk fat content, which is used as a raw material, mixing the heated buffalo milk with ginger juice and coconut juice, enabling ginger protease in the ginger juice to react with caseins in the milk to form protein-enriched jello within a short time under the synergistic effect of the coconut juice, then smashing the jello, placing the jello into a high-temperature and high-humidity environment for natural mildewing to obtain a mildewy object, continuously fermenting the mildewy object in a sealed manner, mixing a fermentation product with an aluminum sulfate solution and lemon juice for ultrasonic oscillating reaction, and finally preparing the alkali-free accelerator. The accelerator prepared by the preparation method disclosed by the invention contains no alkali, is lowin loss of long-term strength of hardened cement paste and extremely high in stability, and has a wide application prospect.

Description

technical field [0001] The invention relates to a preparation method of an alkali-free accelerator, which belongs to the technical field of cement additives. Background technique [0002] Cement accelerator is a setting regulator that can accelerate the setting and hardening of cement or concrete. According to the main components, the accelerator can be divided into alumina clinker, water glass, aluminate, aluminum sulfate and aluminum hydroxide; according to the alkali content, it can be divided into alkaline accelerator and alkali-free accelerator. Coagulant, abroad, the accelerator with alkali content less than 1% is called alkali-free accelerator. Cement accelerator is a coagulant that can accelerate the setting and hardening speed of cement or concrete. Its original production and use history can be traced back to the 1930s. As the most important chemical admixture in wet sprayed concrete, the use of accelerator can make the sprayed material coagulate quickly, reduce ...

Claims

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Application Information

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IPC IPC(8): C04B24/14C04B103/12
CPCC04B24/14C04B2103/12
Inventor 汪巍张晶
Owner CHANGZHOU LANXU CHEM CO LTD
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