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Periclase reference material and its preparation method and application

A reference material, periclase technology, applied in the direction of magnesia, weighing by removing certain components, etc., can solve problems such as interference of periclase quantitative results, limitation of periclase quantitative method selection, etc., to achieve accurate expansion characteristics Effect

Active Publication Date: 2019-08-13
CHINA BUILDING MATERIALS ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the quantitative methods of periclase at home and abroad include XRD, TG, etc. The reference materials used in the method are mainly ZnO, CaO, CuO, etc. On the one hand, these reference materials are likely to interfere with the quantitative results of periclase; Selection of magnesite quantification methods is limited

Method used

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  • Periclase reference material and its preparation method and application
  • Periclase reference material and its preparation method and application
  • Periclase reference material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0024] Embodiment 1-6, important parameters of periclase reference material preparation

[0025] The important parameters in the preparation process of periclase reference material are shown in Table 1.

[0026] Table 1 Important parameters for the preparation of periclase reference materials

[0027]

[0028] The specific application method of the periclase reference material of the present invention is: (1) 1 part of cement to be tested, the periclase reference material, and water are mixed and stirred evenly according to the weight ratio of a:1:b to prepare a mixed cement slurry sample (2) After the sample is cured for a certain period of time, it is boiled in boiling water and steamed under a certain pressure; (3) After the steamed sample is ground to powder, it is analyzed and tested by thermogravimetric analysis to mix the cement slurry sample The percentage of weight loss in the range of 300°C to 390°C; (4) Mix and stir 1 part of the cement to be tested and water ac...

Embodiment 7-10

[0033] Embodiment 7-10, high magnesium cement quantitative determination important parameter

[0034] Examples 7-10 of the present invention respectively use 4 kinds of low-heat Portland cements with different MgO mass percentages (4.27%, 4.92%, 5.71%, and 7.23%) produced by Jiahua Special Cement Co., Ltd. to carry out the cement prescription. Quantitative determination of magnesite. The important parameters of the quantitative determination of high magnesium cement in Examples 7-10 of the present invention are shown in Table 2.

[0035] Table 2 Important parameters of quantitative determination of high magnesium cement

[0036]

[0037]

[0038] The invention provides a periclase reference material and its preparation method and application. Through XRD detection, the periclase reference material of the present invention has only the characteristic peak of magnesium oxide, indicating that its chemical composition is magnesium oxide; The fineness of the invented pericl...

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Abstract

The invention discloses periclase reference material and a preparation method and application thereof and belongs to the technical field of building material, wherein an effective component in the periclase reference material is magnesia having a fineness of 45-80 Mum. The periclase reference material enables periclase content in cement to be quantitatively measured conveniently.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a periclase reference material and its preparation method and application. Background technique [0002] MgO in cement clinker exists in two forms: solid solution and free. Among them, solid solution MgO has no expansion effect, and MgO (also known as periclase) existing in the form of free crystals will expand by about 117% in its own volume during the slow hydration process, and has late-stage micro-expansion. Therefore, to accurately evaluate the post-expansion characteristics of high-magnesium cement, it is necessary to quantify the periclase in high-magnesium cement. At present, the quantitative methods of periclase at home and abroad include XRD, TG, etc. The reference materials used in the method are mainly ZnO, CaO, CuO, etc. On the one hand, these reference materials are likely to interfere with the quantitative results of periclase; The choice of methods fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B2/10C01F5/06C01F5/08C01F5/12C04B28/04G01N5/04
CPCC01F5/06C01F5/08C01F5/12C01P2004/61C01P2006/80C04B2/10C04B28/04G01N5/04C04B14/304
Inventor 马忠诚刘云王晶文寨军王显斌魏丽颖
Owner CHINA BUILDING MATERIALS ACAD