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Carboxylic acid water reducing agent compound and preparation method thereof

A technology of carboxylic acid water reducer and compound, which is applied in the field of concrete admixtures, can solve the problems such as the insignificant increase in strength and the impact on concrete strength, etc., and achieve simple compounding process, low cost, late strength increase, compounded components Easy to get effect

Inactive Publication Date: 2017-11-17
CHONGQING SANSHENG IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the increase in strength is not very obvious, so the existing technology will compound carboxylic acid water reducing agent to improve its water reducing effect, but usually the substances added during the compounding process will have a negative impact on the concrete in the later stage, such as compounded Some salts will precipitate and crystallize and affect the later strength of concrete, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add 2.5kg of aluminum sulfate, 2.5kg of calcium formate, and 50g of triethanolamine into 1000kg of carboxylic acid superplasticizer and mechanically stir for 3 minutes at a speed of 180r / min; then increase the speed to 500r / min and stir for 5 minutes; then prepare the mixture to a mass concentration of the mixture 10% water agent and adjust the pH value to 7±1 to obtain the carboxylic acid superplasticizer compound.

Embodiment 2

[0020] Add 2kg of aluminum sulfate, 3kg of calcium formate, and 52g of triethanolamine into 1000kg of carboxylic acid water reducer and mechanically stir for 3min at a speed of 180r / min; then increase the speed to 500r / min and stir for 5min; % water agent and adjust the pH value to 7±1 to obtain the carboxylic acid superplasticizer compound.

Embodiment 3

[0022] Add 3kg of aluminum sulfate, 2kg of calcium formate, and 60g of triethanolamine into 1000kg of carboxylic acid water reducer and mechanically stir for 3min at a speed of 180r / min; then increase the speed to 500r / min and stir for 5min; % water agent and adjust the pH value to 7±1 to obtain the carboxylic acid superplasticizer compound.

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PUM

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Abstract

The invention discloses a carboxylic acid water reducing agent compound and a preparation method thereof. The carboxylic acid water reducing agent compound provided by the invention is prepared from aluminum sulfate, calcium formate, triethanolamine and a carboxylic acid water reducing agent, and is mixed and confected to be a water agent to be used. Compared with a common carboxylic acid water reducing agent, the carboxylic acid water reducing agent compound provided by the invention can be used for increasing the early strength of concrete by 20 percent or above; moreover, the later strength is also increased drastically; further, to-be-compounded components are simple and easily obtained; the compounding process is simple and the cost is low.

Description

technical field [0001] The invention relates to a concrete admixture, in particular to a carboxylic acid water reducer compound and a preparation method thereof. Background technique [0002] In recent years, as a new type of high-efficiency water reducer, carboxylic acid water reducer has excellent characteristics such as low dosage and high water reducer. With the development of highways, bridges, and the construction industry, the demand and requirements for prefabricated components in emergencies and emergency rescue have increased, and higher and higher requirements have been put forward for the strength and setting time of prefabricated components in the early stage, without affecting the strength and performance of concrete in the later stage. At present, the market mainly uses synthesis and compounding, and the synthesis mainly increases the length of side chains through large molecular weight monomers to improve strength. However, the increase in strength is not ve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/12
CPCC04B40/0039C04B22/148C04B24/04C04B24/122C04B2103/302
Inventor 潘先文高毅姚彬
Owner CHONGQING SANSHENG IND CO LTD