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Ready-mixed mortar super-retarder

A technology of super retarder and ready-mixed mortar, which is applied in the field of mortar retarder, super retarder and thickening, which can solve the problems of high construction strength, large stirring noise, and many labors, and achieve stability and operability Effects of improving, ensuring project progress, and reducing production costs

Inactive Publication Date: 2010-07-07
上海华联建筑外加剂厂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, domestic construction mortar is mostly mixed on site. This preparation method has many defects such as high construction intensity, more labor, poor quality stability, on-site mixing pollutes the environment, and large mixing noise.
[0003] In practical applications, especially when the average temperature is above 37°C in high temperature seasons, the setting time of mortar will be shortened, and sometimes even micro-hardening will occur, which affects the construction progress and quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: Add 30kg of water into the reaction pot, raise the temperature to 30°C-50°C, add 10kg of calcium lignosulfonate while stirring, centrifuge at high speed after the dissolution is completed, and then transfer it to the reaction pot. Start the mixer, heat up to about 35°C, keep the temperature, add 15kg of sodium gluconate and 44kg of sugar in turn while stirring, keep the temperature and stir for 30 minutes, start to add 1kg of isothiazolinone antiseptic and fungicide (commercially available TF-02 Antiseptic and fungicide), keep adding dropwise at a constant speed, and the dropwise addition is completed in about 30 minutes, and continue to keep warm and stir for 30 minutes. After natural cooling, high-speed centrifugation is performed again to remove sediment and slag, ammonia and chlorine are removed at room temperature, and the pH value is adjusted to about 6-8, which is the finished product.

Embodiment 2

[0022] Example 2: Add 34kg of water into the reaction pot, raise the temperature to 30°C-50°C, add 18kg of calcium lignosulfonate while stirring, centrifuge at high speed after the dissolution is completed, and then transfer it to the reaction pot. Start the mixer, heat up to about 35°C, keep the temperature, add 12kg of sodium gluconate and 34kg of sugar in turn while stirring, keep the temperature and stir for 30 minutes, start to add 2kg of isothiazolinone antiseptic and fungicide (commercially available TF-02 Antiseptic and fungicide), keep adding dropwise at a constant speed, and the dropwise addition is completed in about 30 minutes, and continue to keep warm and stir for 30 minutes. After natural cooling, high-speed centrifugation is performed again to remove sediment and slag, ammonia and chlorine are removed at room temperature, and the pH value is adjusted to about 6-8, which is the finished product.

Embodiment 3

[0023] Example 3: Add 39kg of water into the reaction pot, raise the temperature to 30°C-50°C, add 12kg of calcium lignosulfonate while stirring, centrifuge at high speed to remove the precipitate after the dissolution is completed, and then transfer it into the reaction pot. Start the mixer, heat up to about 35°C, keep the temperature, add 18kg of sodium gluconate and 30kg of sugar in turn while stirring, keep the temperature and stir for 30 minutes, start to add 1kg of isothiazolinone antiseptic and fungicide (commercially available TF-02 Antiseptic and fungicide), keep adding dropwise at a constant speed, and the dropwise addition is completed in about 30 minutes, and continue to keep warm and stir for 30 minutes. After natural cooling, high-speed centrifugation is performed again to remove sediment and slag, ammonia and chlorine are removed at room temperature, and the pH value is adjusted to about 6-8, which is the finished product.

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PUM

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Abstract

The invention relates to a ready-mixed mortar super-retarder, which is characterized by being composed of the following components by weight percentage: 10-20% of calcium lignosulphonate, 10-20% of sodium gluconate, 25-45% of white sugar, 1-3% of antiseptic germicide and 30-50% of water, wherein the components are polymerized to form a particular-structure synthetic product in the environment of 30-50 DEG C. After synthesis is finished, purification processes of slag removing, ammonia removing, chlorine removing, and the like are carried out, and a final product is formed after PH adjustment. The ready-mixed mortar super-retarder has the characteristics of high stability, wide cement adaptability, high water-reducing rate, good environment-friendly performance, and the like, and can significantly improve the workability and water retention of mortar and each physical and mechanical property of the mortar after hardening. The low ammonia emission amount and the zero formaldehyde content can not pollute environment, and the ready-mixed mortar super-retarder is especially suitable for super retarding and keeping density of ready-mixed commercial mortar in the summer high-temperature season.

Description

technical field [0001] The invention relates to a mortar retarder, which belongs to the field of novel material science and is especially suitable for super retarding and thickening of ready-mixed commercial mortar in summer high temperature season. Background technique [0002] Construction mortar is an essential raw material in construction engineering. According to different application parts and functions, there are many varieties of construction mortar, such as leveling, masonry, plastering, repairing, caulking, waterproofing, etc. At present, domestic construction mortar is mostly mixed on-site. This preparation method has many defects such as high construction intensity, more labor, poor quality stability, on-site mixing pollutes the environment, and high mixing noise. [0003] In practical applications, especially when the average temperature is above 37°C in high temperature seasons, the setting time of mortar will be shortened, and sometimes even micro-hardening w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/18C04B24/10
CPCC04B2103/22C04B40/0046
Inventor 张如勤郭执宝何仙琴王骁敏顾艳何全荣
Owner 上海华联建筑外加剂厂有限公司
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