Statistical Calibration of ASTM C150 Bogue-Derived Phase Limits to Directly Determined Phases by Quantitative X-Ray Powder Diffraction
| Autor: | S. W. Dean, Paul Stutzman, Stefan Leigh |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Cement
Environmental Engineering Alite Materials science Aluminate Public Health Environmental and Occupational Health General Engineering Analytical chemistry Mineralogy law.invention Portland cement chemistry.chemical_compound Nuclear Energy and Engineering chemistry law Calibration Ferrite (magnet) General Materials Science Belite Powder diffraction |
| Zdroj: | Journal of ASTM International. 7:103046 |
| ISSN: | 1546-962X |
| Popis: | Statistical analyses of companion Bogue (ASTM C150-07) and quantitative X-ray powder diffraction (QXRD) estimates for cement phases are used to establish the most likely linear relationship between these two measurement techniques for alite, belite, aluminate, ferrite, and for the combinations (C3S+4.75⋅C3A) and (C4AF+2⋅C3A) used to characterize heat of hydration and sulfate resistance, respectively. This cross-calibration was performed using published data from more than 194 Portland cements, spanning more than 50 years of manufacture. Each resulting calibration is a linear relationship, reported with 99 % Working–Hotelling–Scheffe confidence limits from the least-squares regression. Fieller calibration intervals are used to report bounds for the QXRD values corresponding to the Bogue limits given in ASTM C150-07, Table 1. Such bounds could allow either technique to be used for phase estimation to assess the compliance of a Portland cement. |
| Databáze: | OpenAIRE |
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