Modified magnesium cement

A magnesium cement and modification technology, applied in the field of magnesium cement materials, can solve the problems of easy deformation and cracking, strong thermal expansion, low mechanical strength, etc., and achieve good compressive performance, strong rigidity, and high gel strength.

Inactive Publication Date: 2017-04-19
郑文薏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] General magnesium cement is made by mixing magnesium oxide and magnesium sulfate. It has the characteristics of light weight, fire prevention, fast setting speed, good sound insulation effect, and high heat insulation efficiency. However, magnesium cement has stron

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0009] Example 1: A modified magnesium cement, which is made by mixing 100 parts of magnesium oxide, 100 parts of 30% magnesium sulfate aqueous solution, 0.1 part of citric acid or sodium citrate, and 100 parts of fly ash as fillers. , Its compressive performance is 75MPa.

Example Embodiment

[0010] Example two, a modified magnesium cement composed of 100 parts of magnesium oxide, 85 parts of magnesium sulfate aqueous solution with a concentration of 35%, 1 part of modifier mixed with citric acid or sodium citrate and aluminum sulfate, and 110 parts of silicon Ash is made by mixing and stirring fillers, and its compressive performance is 90MPa.

Example Embodiment

[0011] Example three, a modified magnesium cement, consisting of 100 parts of magnesium oxide, 90 parts of a 40% magnesium sulfate aqueous solution, 2 parts of modifiers mixed with citric acid or sodium citrate and potassium aluminum sulfate, 150 parts The slag is mixed and stirred with fillers, and its compressive performance is 105MPa.

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PUM

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Abstract

The present invention discloses a modified magnesium cement, which comprises the following raw materials by weight: 100 parts of magnesium oxide, 40-150 parts of a magnesium sulfate aqueous solution having a concentration of 30-55%, 0.1-15 parts of a modifier, and 0-300 parts of a filler, wherein the modifier is citric acid or sodium citrate. According to the present invention, the time of the reaction of the magnesium oxide in the magnesium cement and the magnesium sulfate aqueous solution can be effectively shortened, the magnesium cement cementing strength is high, the compression resistance of the product is good, the rigidity of the product is strong, and the modified magnesium cement can meet the use requirements in fields of industry, agriculture, building, building materials, civil, and the like.

Description

technical field [0001] The invention relates to a magnesium cement material used in fields such as industry, agriculture, construction, building materials and civil use, in particular to a modified magnesium cement. Background technique [0002] General magnesium cement is made by mixing magnesium oxide and magnesium sulfate. It has the characteristics of light weight, fire prevention, fast setting speed, good sound insulation effect, and high heat insulation efficiency. However, magnesium cement has strong thermal expansion during the curing process, and is easy to deform and crack. , The mechanical strength is low, so the promotion and application of this magnesium cement is limited, so the characteristics of magnesium cement can be changed by developing modifiers. Contents of the invention [0003] In order to overcome the inherent shortcomings of magnesium cement and improve the performance of magnesium cement, the invention provides a modified magnesium cement. [00...

Claims

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Application Information

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IPC IPC(8): C04B9/04C04B9/06C04B9/11
CPCC04B9/04C04B9/06C04B9/11
Inventor 郑文薏祝清怡
Owner 郑文薏
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