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Method for manufacturing and characterizing magnesium oxychloride cement foam concrete pore structure model based on modified magnesium oxychloride cement

A technology of magnesium oxychloride cement and foam concrete, which is applied in the direction of manufacturing tools, ceramic products, ceramic molding machines, etc., can solve the problems that the depth of the pore structure is not accurately displayed, and the real situation of the internal pores of the foam concrete cannot be directly reflected.

Active Publication Date: 2019-11-08
QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its biggest disadvantage is that it can only get a virtual picture of the foam concrete structure, and there is no accurate display of the depth of the hole structure
[0009] Through the above analysis, it is found that no matter the calculation method or the image method, each method can basically only reflect the parameters of one kind of hole, and the above method cannot directly reflect the real situation of the inner hole of the foam concrete

Method used

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  • Method for manufacturing and characterizing magnesium oxychloride cement foam concrete pore structure model based on modified magnesium oxychloride cement
  • Method for manufacturing and characterizing magnesium oxychloride cement foam concrete pore structure model based on modified magnesium oxychloride cement
  • Method for manufacturing and characterizing magnesium oxychloride cement foam concrete pore structure model based on modified magnesium oxychloride cement

Examples

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Effect test

Embodiment 1

[0040] A method for making a magnesium oxychloride cement foam concrete pore structure model, comprising the following steps:

[0041] Select a representative magnesium oxychloride cement foam concrete, and cut off the section, the section is kept clean and tidy, and the size of the cut sample is 100mm×100mm×100mm

[0042] Modified magnesium oxychloride cement slurry preparation, magnesium chloride and water are configured into a magnesium chloride solution, the Baume degree of the magnesium chloride solution is 25°Be', and magnesium oxide, magnesium chloride solution, and water-resistant modifier are used in a mass ratio of 1:0.75 : the ratio of 0.1 is uniformly mixed and stirred into a modified magnesium oxychloride cement slurry; the magnesium oxide is light-burned magnesium oxide powder with an active content of MgO greater than 18%; the water-resistant modifier is ammonium dihydrogen phosphate; Magnesium active content refers to the content of magnesium oxide that can rea...

Embodiment 2

[0054] A method for making a magnesium oxychloride cement foam concrete pore structure model, comprising the following steps:

[0055] Select a representative magnesium oxychloride cement foam concrete, and cut off the section, the section is kept clean and tidy, and the size of the cut sample is 100mm×100mm×100mm

[0056] Modified magnesium oxychloride cement slurry preparation, magnesium chloride and water are configured into a magnesium chloride solution, the Baume degree of the magnesium chloride solution is 24°Be', and magnesium oxide, magnesium chloride solution, and water-resistant modifier are used in a mass ratio of 1:0.80 : the ratio of 0.08 is uniformly mixed and stirred into modified magnesium oxychloride cement slurry; the magnesium oxide is light-burned magnesium oxide powder with an active content of MgO greater than 18%; the water-resistant modifier is ammonium dihydrogen phosphate; Magnesium active content refers to the content of magnesium oxide that can reac...

Embodiment 3

[0061] A method for making a magnesium oxychloride cement foam concrete pore structure model, comprising the following steps:

[0062] Select a representative magnesium oxychloride cement foam concrete, and cut off the section, the section is kept clean and tidy, and the size of the cut sample is 100mm×100mm×100mm

[0063] Modified magnesium oxychloride cement slurry preparation, magnesium chloride and water are configured into magnesium chloride solution, the Baume degree of the magnesium chloride solution is 26°Be', magnesium oxide, magnesium chloride solution, and water-resistant modifier are 1:0.60 according to the mass ratio : the ratio of 0.12 is uniformly mixed and stirred into a modified magnesium oxychloride cement slurry; the active content of the magnesium oxide is 60% light-burned magnesium oxide powder; the water-resistant modifier is ammonium dihydrogen phosphate; Magnesium active content refers to the content of magnesium oxide that can react with magnesium chlo...

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Abstract

The invention discloses a method for manufacturing a magnesium oxychloride cement foam concrete pore structure model based on modified magnesium oxychloride cement. The method comprises the followingsteps: laying modified magnesium oxychloride cement (MOC) with excellent water resistance on a section of MOC foam concrete by utilizing the hydrolysis characteristic of MOC in water and water resistance of the modified MOC to form a modified MOC-MOC foam concrete integral test piece; and then hydrolyzing the modified MOC-MOC foam concrete integral test piece, wherein the rest part is the magnesium oxychloride cement foam concrete pore structure model. According to the obtained visualized model of the concrete internal pore structure formed by the water-resistant MOC, various characteristic parameters of pores can be observed by using instruments such as a microscope, an scanning electron microscope (SEM) and the like, and the characterization method not only can be used to more intuitively see the internal pore structure of the MOC foam concrete, but also can be used to characterize various parameters of the pores in the MOC foam concrete. The method for testing different pore parameters by using one method is simple and feasible, and simplification of scientific research approaches is achieved.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a method for making and characterizing the pore structure model of magnesium oxychloride cement foam concrete based on modified magnesium oxychloride cement. Background technique [0002] Foamed concrete is made of mineral admixtures, cement-based materials, etc. as the main cementitious material, adding water and admixtures, and can also add fine sand or some lightweight aggregates to make a slurry, which is foamed by a foaming agent. It is a lightweight concrete material that contains a large number of independent, small and evenly distributed air cells that are poured and cured at the construction site or factory. Due to the large number of closed air cells inside, foam concrete not only has light weight and thermal insulation properties, but also has a "breathing" function, which can improve the comfort of the living environment. The dry bulk density o...

Claims

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Application Information

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IPC IPC(8): C04B38/00C04B28/32B28B1/50
CPCB28B1/50C04B28/32C04B2111/40C04B22/16C04B38/00
Inventor 丁秀萍郑卫新李宝兰
Owner QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
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