A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Rietveld quantitative phase analysis of Yeelimite-containing cements
Abstract Yeelimite-containing cements are attracting attention for their tailored properties. Calcium sulfoaluminate, CSA, cements have high contents of Yeelimite and they are used for special applications. Belite calcium sulfoaluminate, BCSA or sulfobelite, cements have high contents of belite and intermediate contents of Yeelimite, and they may become an alternative to OPC. Here, we report Rietveld quantitative phase analyses for three commercially available CSA clinkers, one CSA cement, and two laboratory-prepared iron-rich BCSA clinkers. The crystalline phases are reported and quantified. Selective dissolutions are employed for BCSA clinkers to firmly establish their phases. Finally, the overall unaccounted contents (amorphous plus crystalline not quantified) have been determined by two approaches: i) external standard procedure (G-method) with reflection data; ii) internal standard procedure (spiking method with ZnO) with transmission data. The overall unaccounted contents for CSA clinkers were ~10wt.%. Conversely, the unaccounted contents for BCSA clinkers were higher, ~25wt.%.
Rietveld quantitative phase analysis of Yeelimite-containing cements
Abstract Yeelimite-containing cements are attracting attention for their tailored properties. Calcium sulfoaluminate, CSA, cements have high contents of Yeelimite and they are used for special applications. Belite calcium sulfoaluminate, BCSA or sulfobelite, cements have high contents of belite and intermediate contents of Yeelimite, and they may become an alternative to OPC. Here, we report Rietveld quantitative phase analyses for three commercially available CSA clinkers, one CSA cement, and two laboratory-prepared iron-rich BCSA clinkers. The crystalline phases are reported and quantified. Selective dissolutions are employed for BCSA clinkers to firmly establish their phases. Finally, the overall unaccounted contents (amorphous plus crystalline not quantified) have been determined by two approaches: i) external standard procedure (G-method) with reflection data; ii) internal standard procedure (spiking method with ZnO) with transmission data. The overall unaccounted contents for CSA clinkers were ~10wt.%. Conversely, the unaccounted contents for BCSA clinkers were higher, ~25wt.%.
Rietveld quantitative phase analysis of Yeelimite-containing cements
Álvarez-Pinazo, G. (author) / Cuesta, A. (author) / García-Maté, M. (author) / Santacruz, I. (author) / Losilla, E.R. (author) / la Torre, A.G. De (author) / León-Reina, L. (author) / Aranda, M.A.G. (author)
Cement and Concrete Research ; 42 ; 960-971
2012-03-26
12 pages
Article (Journal)
Electronic Resource
English
Rietveld quantitative phase analysis of Yeelimite-containing cements
| British Library Online Contents | 2012
Rietveld quantitative phase analysis of Yeelimite-containing cements
| Tema Archive | 2012
Rietveld quantitative phase analysis of Yeelimite-containing cements
| Online Contents | 2012
Quantitative Rietveld analysis of the amorphous content in cements and clinkers
| Tema Archive | 2003