RT Journal Article
T1 Rietveld quantitative phase analysis with molybdenum radiation
A1 Cuesta-García, Ana María
A1 Álvarez-Pinazo, Gema
A1 García-Maté, Marta
A1 Santacruz-Cruz, María Isabel
A1 García-Aranda, Miguel Ángel
A1 Gómez-de-la-Torre, María de los  Ángeles
A1 León-Reina, Laura
K1 Cemento
AB Building materials are very complex samples of worldwide importance; hence quantitative knowledgeof their mineralogical composition is necessary to predict performances. Rietveld quantitative phaseanalysis (RQPA) allows a direct measurement of the crystalline phase contents of cements. We highlightin this paper the use of laboratory X-ray powder diffraction (LXRPD) employing high-energyradiation, molybdenum (Mo), for attaining the RQPA of cements. Firstly, we evaluate the accuracyof RQPA employing a commercial calcium sulfoaluminate clinker with gypsum. In addition toMoKα1 and MoKα1,2 radiations, Cu and synchrotron patterns are also analyzed for the sake of comparison.Secondly, the assessment of the accuracy of RQPA results obtained using different radiations(synchrotron, Mo, and Cu) and geometries (reflection and transmission) is performed by analyzingtwo well-known commercial samples. As expected, for LXRPD data, accuracy in the RQPA resultsimproves as the irradiated volume increases. Finally, three very complex aged hydrated cements havebeen analyzed using MoKα1-LXRPD and Synchrotron-XRPD. The main overall outcome of thiswork is the benefit for RQPA of using strictly monochromatic MoKα1 radiation. Best laboratory resultsarise from MoKα1 data as the effective tested volume is much increased but peak overlapping isnot swelled
PB Cambridge Core
SN 0885-7156
YR 2014
FD 2014
LK http://hdl.handle.net/10630/14018
UL http://hdl.handle.net/10630/14018
LA eng
NO Powder Diffraction 30 (1), March 2015
NO Universidad de Málaga. Campus de Excelencia Internacional. Andalucía Tech.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 22 ene 2026