RT Journal Article
T1 Rietveld quantitative phase analyses of SRM 2686a: a standard Portland clinker
A1 García-Maté, Marta
A1 Álvarez-Pinazo, Gema
A1 León-Reina, Laura
A1 Gómez-de-la-Torre, María de los  Ángeles
K1 Radiación sincrotrónica
K1 Mineralogía
AB SRM 2686a is a NIST reference Portland clinker with reported mineralogical analysis from powder diffraction and electron microscopy. This sample is used in ASTM C1365 test method for Rietveld quantitative phase analysis validation procedure. Here,  we have analysed SRM 2686a by using three state-of-the-art powder diffraction configurations: i) strictly monochromatic CuKα 1 radiation in flat reflection geometry; ii) strictly monochromatic MoKα 1 radiation in flat transmission geometry; and iii) synchrotron radiation in rotating capillary transmission geometry. The silicate and aluminate enriched residues have also been studied by CuKα 1 powder diffraction. All the powder patterns were analysed by Rietveld method with the best available protocols. The results indicate that belite in SRM 2686a is composed of two polymorphs (- and α’H-) that must be included in the analyses. The use of a unique phase for describing belite (-polymorph) and improper peak shape modelling could explain the problems found for implementing ASTM C1365 in some cement manufacturing plants. Furthermore, all the patterns are deposited as open data access at Zenodo, so interested laboratories can analyse these data to verify their protocols.
YR 2018
FD 2018-10-03
LK https://hdl.handle.net/10630/16565
UL https://hdl.handle.net/10630/16565
LA eng
NO This work has been supported by Spanish MINECO throughBIA2014-57658-C2-2-R, which is co-funded by FEDER, and BIA2014-57658-C2-1-R. We also thank ALBA synchrotron for providing beamtime at BL04-MSPD beamline.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 21 ene 2026