Yue, Y;
Wang, JJ;
Bai, Y;
(2018)
Tracing the status of silica fume in cementitious materials with Raman microscope.
Construction and Building Materials
, 159
pp. 610-616.
10.1016/j.conbuildmat.2017.11.015.
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Abstract
Silica fume (SF) is an essential material for formulating high performance concrete (HPC). However, its small particle size could cause safety-hazards. Although replacing SF powder with slurry can somehow avoid the potential bio-toxicity, its long-term stability within cementitious materials is unknown. In this study, Raman microscope which combines Raman spectroscopy with light-optical microscope was successfully applied to characterise the composition and morphology of SF in original slurry and hydrated SF-Portland cement (PC) pastes. The unhydrated SF-agglomerates were clearly detected in the original SF slurry and the 22-hour and 6-month hydrated SF-PC pastes.
| Type: | Article |
|---|---|
| Title: | Tracing the status of silica fume in cementitious materials with Raman microscope |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.conbuildmat.2017.11.015 |
| Publisher version: | http://doi.org/10.1016/j.conbuildmat.2017.11.015 |
| Language: | English |
| Additional information: | © 2017 Elsevier Ltd. All rights reserved. This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Amorphous silica; Cementitious materials; Raman microscope; Raman spectroscopy; Silica fume |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10038594 |
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