Liquid alkali and chlorine free setting accelerator and preparation method thereof

A technology of quick-setting agent and liquid, which is applied in the field of liquid alkali-free and chlorine-free accelerator and its preparation, can solve the problems of short final setting time and short initial setting time, achieve improved stability, improved performance, promote dispersion and Solubility effect

Active Publication Date: 2015-10-28
RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For this reason, the technical problem to be solved by the present invention is that the liquid alkali-free and chlorine-free accelerators in the prior art cannot simultaneously have short initial setting time, short final setting time, high 1-day compressive strength, and 28-day compr...

Method used

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  • Liquid alkali and chlorine free setting accelerator and preparation method thereof
  • Liquid alkali and chlorine free setting accelerator and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The liquid alkali-free and chlorine-free quick-setting agent raw material formula described in this implementation includes the components of the following parts by weight:

[0032] Aluminum sulfate 60kg, magnesium fluorosilicate 2kg, magnesium oxide 0.5kg, calcium formate 5kg, ferrous sulfate 5kg, monoethanolamine 20kg, fluorosilicate 1kg, polyether 2kg and water 50kg.

[0033] Prepare liquid alkali-free and chlorine-free quick-setting agent according to above-mentioned raw material formula, comprise the steps:

[0034](1) Weigh coagulation accelerator, coagulation accelerator early strength agent, early strength agent, complexation accelerator, stabilizer, inorganic acid, defoamer and water according to the above formula, mix and stir under heating conditions at a temperature of 35°C Evenly, the stirring speed is 35r / min, and then cooled to room temperature to obtain the quick-setting agent mother liquor for subsequent use;

[0035] (2) Add the quick-setting agent mo...

Embodiment 2

[0037] The liquid alkali-free and chlorine-free quick-setting agent raw material formula described in this implementation includes the components of the following parts by weight:

[0038] Aluminum sulfate 130kg, magnesium sulfate 0.5kg, ammonium fluorosilicate 2kg, calcium nitrate 0.5kg, ferrous sulfate 15kg, diethanolamine 8kg, phosphoric acid 5kg, higher alcohol fatty acid ester 0.25kg and water 75kg.

[0039] Prepare liquid alkali-free and chlorine-free quick-setting agent according to above-mentioned raw material formula, comprise the steps:

[0040] (1) Weigh coagulation accelerator, coagulation accelerator early strength agent, early strength agent, complexation accelerator, stabilizer, inorganic acid, defoamer and water according to the above formula, mix and stir evenly under the heating condition of 65°C, The stirring speed is 90r / min, and then cooled to room temperature to obtain the quick-setting agent mother liquor for subsequent use;

[0041] (2) Add the quick-s...

Embodiment 3

[0043] The liquid alkali-free and chlorine-free quick-setting agent raw material formula described in this implementation includes the components of the following parts by weight:

[0044] Aluminum sulfate 81.5kg, mixture of magnesium fluorosilicate and magnesium sulfate 1.5kg, ammonium fluorosilicate 1kg, calcium nitrate 4kg, ferrous sulfate 7kg, triethanolamine 15kg, hydrofluoric acid 1.5kg, polydimethylsiloxane 1.5 kg and 50kg of water.

[0045] Prepare liquid alkali-free and chlorine-free quick-setting agent according to above-mentioned raw material formula, comprise the steps:

[0046] (1) Weigh coagulation accelerator, coagulation accelerator early strength agent, early strength agent, complexation accelerator, stabilizer, inorganic acid, defoamer and water according to the above formula and mix according to the following steps, including:

[0047] First take water and add it to the reaction kettle and heat it to 40°C, start the mixer, control the stirring speed to 40r / ...

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Abstract

The invention discloses a liquid alkali and chlorine free setting accelerator and a preparation method thereof. The raw materials comprises, by weight, 60-130 parts of aluminum sulfate, 0.5-2 parts of a coagulation accelerator, 0.5-2 parts of a coagulating early strength agent, 0.5-5 parts of an early strength agent, 5-15 parts of a complexing accelerator, 8-20 parts of a stabilizer, 1-5 parts of inorganic acid, 0.25-2 parts of a defoaming agent, and 50-75 parts of water. The prepared liquid alkali and chlorine free setting accelerator solves the problems that alkali and chlorine free setting accelerators in the prior art cannot combine the properties of short initial setting time, short final setting time, high 1 day compressive strength, high 28-day compressive strength rate, and good stability, etc.

Description

technical field [0001] The invention belongs to the technical field of building material admixtures, and in particular relates to a liquid alkali-free and chlorine-free accelerator and a preparation method thereof. Background technique [0002] Accelerator is an admixture that makes cement concrete harden quickly, and is mainly used in tunnel shotcrete construction and mortar repair construction. The earliest accelerator was the powdered accelerator developed by Sika in the 1830s and 1940s, while my country began to develop accelerators in the 1870s, and has achieved many research results, including Red Star Type I, 711 Type, Yangquan Type I, Yaoshan Type, 782 Type, etc. The traditional quick-setting agent, its dosage only accounts for 2%-3% of the cement content in concrete, but it can make the concrete set in 5 minutes and final set in 10 minutes, which has the advantages of high setting-accelerating effect and low price. However, the powdery quick-setting agent has a lot...

Claims

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Application Information

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IPC IPC(8): C04B24/32C04B24/12C04B24/42C04B22/14C04B103/12
Inventor 杨富民刘志孙东娟孙成晓何军利刘泽敏闫俊洁王舒毅
Owner RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI
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