Prompt Phase Analyses of Ultrahigh-Performance Concrete
Publication: Journal of Materials in Civil Engineering
Volume 30, Issue 3
Abstract
Powder X-ray diffraction is a time-consuming and challenging task, especially for preparation of sensitive phases like ettringite and calcium-silicate-hydrate (C-S-H) phases. Fine-grained ultrahigh-performance concrete (UHPC) with an average grain size could be investigated directly without time-consuming milling. As a proof of concept, small UHPC cylinders with plain surfaces were investigated with a newly designed sample holder. The comparison with conventionally prepared powder shows the feasibility of fast qualitative phase analysis using this approach. As a great benefit, a depth-dependent analysis, as well as a comparison of surface layers and core material, was carried out.
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Acknowledgments
The authors thank their colleagues in the BAM workshop for construction of the special sample holder. The research on UHPC was funded by Deutsche Forschungsgemeinschaft (DFG) (Sachbeihilfe ME 1461/11-1).
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Published In
Journal of Materials in Civil Engineering
Volume 30 • Issue 3 • March 2018
Copyright
©2018 American Society of Civil Engineers.
History
Received: Mar 8, 2017
Accepted: Aug 15, 2017
Published online: Jan 9, 2018
Published in print: Mar 1, 2018
Discussion open until: Jun 9, 2018
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