CN105738390A - Measuring method for content of active Al2O3 in volcanic - Google Patents
Measuring method for content of active Al2O3 in volcanic Download PDFInfo
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- CN105738390A CN105738390A CN201610100460.0A CN201610100460A CN105738390A CN 105738390 A CN105738390 A CN 105738390A CN 201610100460 A CN201610100460 A CN 201610100460A CN 105738390 A CN105738390 A CN 105738390A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/20—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by using diffraction of the radiation by the materials, e.g. for investigating crystal structure; by using scattering of the radiation by the materials, e.g. for investigating non-crystalline materials; by using reflection of the radiation by the materials
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Abstract
The invention discloses a measuring method for the content of active Al2O3 in volcanic. The method comprises the following steps that the content of total Al2O3 in volcanic is measured through chemical analysis; volcanic powder is analyzed through X-ray diffraction (XRD); feldspar (2theta=29 degrees-32 degrees) in an XRD map is selected for independent diffraction peak data analysis, the percentages of the area of crystalline phases above a diffraction background line and the area of all phases below the diffraction peak line are calculated to obtain the Al2O3 crystalline phase percentage; a minusing method is adopted for obtaining the amorphous phase Al2O3 ratio; the content of active Al2O3 in volcanic is obtained through the formula: the content of active Al2O3=(total Al2O3 content)*(amorphous state Al2O3 ratio). The method is not affected by many external factors such as powder grain fineness, the result is only determined by material internal element ingredients and amorphous content, and the method is more scientific, more reasonable, more accurate, easier, faster and more convenient. The method is applicable to judging the quality of volcanic or other cinerite materials such as slag used as supplementary cementious materials.
Description
Technical field
The present invention relates to active A l in a kind of test volcanic rock2O3The method of content, belongs to two grades of subject field of cementing material technology of Materials Science and Engineering first level discipline Inorganic Non-metallic Materials.
Background technology
Volcanic rock be due to volcanic eruption to earth surface through quick refrigeration containing the heterogeneous rock such as the nature of glass, crystal, being widely used as in cement-based material because it has good pozzolanic activity supplementary cementitious material (i.e. the composite material of cement and mortar or concrete mineral admixture), the quality at this supplementary cementitious material depends primarily on activity SiO in volcanic rock2Content and active A l2O3Content, so activity SiO in test volcanic rock2Content and active A l2O3Content is used as the quality good or not of supplementary cementitious material for passing judgment on volcanic rock pivotal role.Existing most measuring and calculating active A l2O3The method of content is affected by the impact of powder particle fineness and causes evaluation result difference, as adopted acid treatment soluble substance dissolution determination of experimental method active A l2O3Content etc..Not yet there is active A l in generally accepted test volcanic rock at present2O3Content method.
Summary of the invention
Present invention aim to address active A l in test volcanic rock2O3The problems such as the impact being subject to powder particle fineness existed during content, it is provided that active A l in a kind of test volcanic rock2O3Content method, can test active A l in volcanic rock accurately, quickly and easily by technical solution of the present invention2O3Content is to contribute to the quality good or not passing judgment on volcanic rock as supplementary cementitious material.
Active A l in test volcanic rock of the present invention2O3The flow process of content method is as follows: 1, measured full Al in volcanic rock by chemical analysis2O3Content；2, with volcanic rock powder X light diffracting analysis (XRD)；3, choosing the data analysis of Anhydrite (2 32 °, θ=29 °) independent diffraction maximum in XRD figure is composed, the percentage rate of crystalline phase area more than calculating diffraction background line and the entire object phase area below diffraction crest line is Al2O3Crystalline phase percentage rate；4, amorphous phase Al is obtained with minusing2O3Ratio, then calculate: active A l2O3Content=(full Al2O3Content) * (amorphous state Al2O3Ratio).
The present invention is the method for testing considered from material property essence (composition and structure), with existing method and technology comparative result not by the impact of many extraneous factors such as powder fineness of the particles, only determined by material intrinsic factor composition and noncrystalline content, more scientific and reasonable, accurate, simple and direct, convenient.The present invention tests active A l in volcanic rock2O3Content is applicable to pass judgment on volcanic rock and is used as the quality good or not of supplementary cementitious material, simultaneously popularization and application other pozzolanic materials such as slag etc. can pass judgment on its quality good or not being used as supplementary cementitious material.
Accompanying drawing explanation
Fig. 1 is the inventive method embodiment 1 volcanic rock powder X-ray diffraction pattern analysis of spectrum figure (XRD).
Detailed description of the invention
Below in conjunction with embodiment and compare accompanying drawing the inventive method is described in detail.
The embodiment of the present invention is chosen Cai Fang township, Anyuan County, Jiangxi Province tufa stone chemical analysis and is measured full Al in volcanic rock2O3Content 12.58%(WT)；With volcanic rock powder XRD as shown in Figure 1；The data analysis of Anhydrite (2 32 °, θ=29 °) independent diffraction maximum is chosen in XRD figure is composed, MDIJade software or area integral is adopted to calculate (but also other method), the percentage rate 39% of the entire object phase area of below the crystalline phase area of more than diffraction background line and diffraction crest line can be obtained, be Al2O3Crystalline phase percentage rate 39%, then obtain amorphous phase Al with minusing2O3Ratio 61%；Calculate: active A l2O3Content=(full Al2O3Content 12.58%) * (amorphous state Al2O3Ratio 61%)=7.7%.
Claims (1)
1. active A l in a volcanic rock2O3The assay method of amount, it is characterised in that: comprise the following steps:
1.1 are measured full Al in volcanic rock by chemical analysis2O3Content；
1.2, with volcanic rock powder X light diffracting analysis (XRD)；
1.3, choosing the data analysis of Anhydrite (2 32 °, θ=29 °) independent diffraction maximum in XRD figure is composed, the percentage rate of crystalline phase area more than calculating diffraction background line and the entire object phase area below diffraction crest line is Al2O3Crystalline phase percentage rate；
1.4, amorphous phase SiO is obtained with minusing2Ratio；
1.5, calculated activity Al2O3Content: utilize formula active A l2O3Content=(full Al2O3Content) * (amorphous state Al2O3Ratio), to obtain final product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610100460.0A CN105738390A (en) | 2016-02-24 | 2016-02-24 | Measuring method for content of active Al2O3 in volcanic |
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| CN201610100460.0A CN105738390A (en) | 2016-02-24 | 2016-02-24 | Measuring method for content of active Al2O3 in volcanic |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113252716A (en) * | 2021-05-10 | 2021-08-13 | 中国石油天然气股份有限公司 | Method for measuring crystallinity of igneous rock |
| EP3779418A4 (en) * | 2018-04-02 | 2021-12-15 | Rigaku Corporation | Amorphous phase quantitative analysis apparatus, amorphous phase quantitative analysis method, and amorphous phase quantitative analysis program |
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| CN101153856A (en) * | 2006-09-29 | 2008-04-02 | 北京普析科学仪器有限责任公司 | Fixed point measuring method for x-ray diffraction peak height ratio |
| CN105241904A (en) * | 2015-09-22 | 2016-01-13 | 同济大学 | Energy dispersion X-ray spectrum-based analysis method for phases of fly ash |
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2016
- 2016-02-24 CN CN201610100460.0A patent/CN105738390A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101153856A (en) * | 2006-09-29 | 2008-04-02 | 北京普析科学仪器有限责任公司 | Fixed point measuring method for x-ray diffraction peak height ratio |
| CN105241904A (en) * | 2015-09-22 | 2016-01-13 | 同济大学 | Energy dispersion X-ray spectrum-based analysis method for phases of fly ash |
Non-Patent Citations (4)
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| 冯奇等: "煤矸石的热活化及其火山灰活性研究", 《第九届全国水泥和混凝土化学及应用技术会议》 * |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3779418A4 (en) * | 2018-04-02 | 2021-12-15 | Rigaku Corporation | Amorphous phase quantitative analysis apparatus, amorphous phase quantitative analysis method, and amorphous phase quantitative analysis program |
| CN113252716A (en) * | 2021-05-10 | 2021-08-13 | 中国石油天然气股份有限公司 | Method for measuring crystallinity of igneous rock |
| CN113252716B (en) * | 2021-05-10 | 2023-02-24 | 中国石油天然气股份有限公司 | Method for measuring crystallinity of igneous rock |
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