Coal fly ashes, long used as SCMs, are quite complex, consisting of a mixture of crystalline and amorphous phases. In this study, we aim to shed light on this complexity by fusing two highly complementary techniques: SEM-EDS and Raman spectroscopy. By closely analyzing hundreds of individual particles from 18 unique fly ashes, we report two major findings. Firstly, there is a distinct correlation between particle shape (roundness/circularity) and degree of crystallinity (FWHM of Raman peaks) where jagged particles happen to be almost always crystalline. Secondly, the mean position of the symmetric stretching Raman band of the silicate tetrahedra (between 600 and 1000 cm(-1)) is an indicator of the degree of polymerization of the glassy phase in any given particle. These results highlight the importance of understanding these complex systems at the individual particle level, where multiple phases intermixed at the micro-scale ultimately play a dominant role in governing macroscale ash behavior.
机构:
Univ Lisbon, Fac Letras, Inst Hist Arte, P-1600214 Lisbon, PortugalUniv Lisbon, Fac Letras, Inst Hist Arte, P-1600214 Lisbon, Portugal
Antunes, Vanessa
Jose Oliveira, M.
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Direccao Geral Patrimonio Cultural, Lab Jose Figueiredo, P-1249018 Lisbon, PortugalUniv Lisbon, Fac Letras, Inst Hist Arte, P-1600214 Lisbon, Portugal
Jose Oliveira, M.
Vargas, Helena
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Direccao Geral Patrimonio Cultural, Lab Jose Figueiredo, P-1249018 Lisbon, PortugalUniv Lisbon, Fac Letras, Inst Hist Arte, P-1600214 Lisbon, Portugal
Vargas, Helena
Serrao, Vitor
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Univ Lisbon, Fac Letras, Inst Hist Arte, P-1600214 Lisbon, PortugalUniv Lisbon, Fac Letras, Inst Hist Arte, P-1600214 Lisbon, Portugal
Serrao, Vitor
Candeias, Antonio
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Direccao Geral Patrimonio Cultural, Lab Jose Figueiredo, P-1249018 Lisbon, Portugal
Univ Evora, Lab HERCULES, P-7000676 Evora, PortugalUniv Lisbon, Fac Letras, Inst Hist Arte, P-1600214 Lisbon, Portugal
Candeias, Antonio
Carvalho, Maria Luisa
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Univ Lisbon, Fac Ciencias, Ctr Fis Atom, P-1649003 Lisbon, PortugalUniv Lisbon, Fac Letras, Inst Hist Arte, P-1600214 Lisbon, Portugal
Carvalho, Maria Luisa
Coroado, Joao
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机构:
Inst Politecn Tomar, GeoBioTec ID&T Unit, P-2300313 Tomar, PortugalUniv Lisbon, Fac Letras, Inst Hist Arte, P-1600214 Lisbon, Portugal
Coroado, Joao
Mirao, Jose
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Univ Evora, Lab HERCULES, P-7000676 Evora, PortugalUniv Lisbon, Fac Letras, Inst Hist Arte, P-1600214 Lisbon, Portugal
Mirao, Jose
Dias, Luis
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Univ Evora, Lab HERCULES, P-7000676 Evora, PortugalUniv Lisbon, Fac Letras, Inst Hist Arte, P-1600214 Lisbon, Portugal
Dias, Luis
Longelin, Stephane
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Univ Lisbon, Fac Ciencias, Ctr Fis Atom, P-1649003 Lisbon, PortugalUniv Lisbon, Fac Letras, Inst Hist Arte, P-1600214 Lisbon, Portugal
Longelin, Stephane
Seruya, Ana Isabel
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Univ Lisbon, Fac Ciencias, Ctr Fis Atom, P-1649003 Lisbon, PortugalUniv Lisbon, Fac Letras, Inst Hist Arte, P-1600214 Lisbon, Portugal
机构:
Department of Physics G. Occhialini, University of Milano-Bicocca, Milan, Italy
Milano-Bicocca Division, INFN, Milan, Italy
Department of Physics, University of Pavia, Pavia Division, INFN, Pavia, Italy
ISIS Neutron and Muon Source, STFC, Didcot, United KingdomDepartment of Physics G. Occhialini, University of Milano-Bicocca, Milan, Italy
Rossini, Riccardo
Di Martino, Daniela
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Department of Physics G. Occhialini, University of Milano-Bicocca, Milan, Italy
Milano-Bicocca Division, INFN, Milan, ItalyDepartment of Physics G. Occhialini, University of Milano-Bicocca, Milan, Italy
Di Martino, Daniela
Agoro, Toluwalase
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ISIS Neutron and Muon Source, STFC, Didcot, United KingdomDepartment of Physics G. Occhialini, University of Milano-Bicocca, Milan, Italy
Agoro, Toluwalase
Cataldo, Matteo
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Department of Physics G. Occhialini, University of Milano-Bicocca, Milan, Italy
Milano-Bicocca Division, INFN, Milan, Italy
ISIS Neutron and Muon Source, STFC, Didcot, United KingdomDepartment of Physics G. Occhialini, University of Milano-Bicocca, Milan, Italy
Cataldo, Matteo
Gorini, Giuseppe
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Department of Physics G. Occhialini, University of Milano-Bicocca, Milan, Italy
Milano-Bicocca Division, INFN, Milan, ItalyDepartment of Physics G. Occhialini, University of Milano-Bicocca, Milan, Italy
Gorini, Giuseppe
Hillier, Adrian D.
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ISIS Neutron and Muon Source, STFC, Didcot, United KingdomDepartment of Physics G. Occhialini, University of Milano-Bicocca, Milan, Italy
Hillier, Adrian D.
Laubenstein, Matthias
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Laboratori Nazionali del Gran Sasso (LNGS), INFN, Assergi, L'Aquila, ItalyDepartment of Physics G. Occhialini, University of Milano-Bicocca, Milan, Italy
Laubenstein, Matthias
Marcucci, Giulia
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机构:
Department of Physics G. Occhialini, University of Milano-Bicocca, Milan, Italy
Milano-Bicocca Division, INFN, Milan, Italy
ISIS Neutron and Muon Source, STFC, Didcot, United KingdomDepartment of Physics G. Occhialini, University of Milano-Bicocca, Milan, Italy
Marcucci, Giulia
Musa, Maya
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机构:
Department of Physics G. Occhialini, University of Milano-Bicocca, Milan, Italy
Department of Earth and Environmental Sciences (DISAT), University of Milano-Bicocca, Milan, ItalyDepartment of Physics G. Occhialini, University of Milano-Bicocca, Milan, Italy
Musa, Maya
Riccardi, Maria Pia
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机构:
Department of Earth and Environmental Sciences, University of Pavia, Pavia, Italy
Arvedi Laboratory, CISRiC, University of Pavia, Pavia, ItalyDepartment of Physics G. Occhialini, University of Milano-Bicocca, Milan, Italy
Riccardi, Maria Pia
Scherillo, Antonella
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ISIS Neutron and Muon Source, STFC, Didcot, United KingdomDepartment of Physics G. Occhialini, University of Milano-Bicocca, Milan, Italy
Scherillo, Antonella
Clemenza, Massimiliano
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机构:
Department of Physics G. Occhialini, University of Milano-Bicocca, Milan, Italy
Milano-Bicocca Division, INFN, Milan, ItalyDepartment of Physics G. Occhialini, University of Milano-Bicocca, Milan, Italy
机构:
Azienda Osped Univ SS Antonio & Biagio & Cesare Ar, Res & Innovat Dept DAIRI, SSD Res Labs, Res Training Innovat Infrastruct, Via Venezia 16, I-15121 Alessandria, Italy
Univ Piemonte Orientale, Dept Sci & Technol Innovat, Viale T Michel 11, I-15121 Alessandria, ItalyAzienda Osped Univ SS Antonio & Biagio & Cesare Ar, Res & Innovat Dept DAIRI, SSD Res Labs, Res Training Innovat Infrastruct, Via Venezia 16, I-15121 Alessandria, Italy
Croce, Alessandro
Bellis, Donata
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Ctr G Scansetti, Via Pietro Giuria 9, I-10100 Turin, ItalyAzienda Osped Univ SS Antonio & Biagio & Cesare Ar, Res & Innovat Dept DAIRI, SSD Res Labs, Res Training Innovat Infrastruct, Via Venezia 16, I-15121 Alessandria, Italy
Bellis, Donata
Rinaudo, Caterina
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Univ Piemonte Orientale, Dept Sci & Technol Innovat, Viale T Michel 11, I-15121 Alessandria, ItalyAzienda Osped Univ SS Antonio & Biagio & Cesare Ar, Res & Innovat Dept DAIRI, SSD Res Labs, Res Training Innovat Infrastruct, Via Venezia 16, I-15121 Alessandria, Italy
Rinaudo, Caterina
Cagna, Laura
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Univ Piemonte Orientale, Dept Sci & Technol Innovat, Viale T Michel 11, I-15121 Alessandria, ItalyAzienda Osped Univ SS Antonio & Biagio & Cesare Ar, Res & Innovat Dept DAIRI, SSD Res Labs, Res Training Innovat Infrastruct, Via Venezia 16, I-15121 Alessandria, Italy
Cagna, Laura
Gatti, Giorgio
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机构:
Dept Sustainable Dev & Ecol Transit, Piazza S Eusebio 5, I-13100 Vercelli, ItalyAzienda Osped Univ SS Antonio & Biagio & Cesare Ar, Res & Innovat Dept DAIRI, SSD Res Labs, Res Training Innovat Infrastruct, Via Venezia 16, I-15121 Alessandria, Italy
Gatti, Giorgio
Roveta, Annalisa
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机构:
Azienda Osped Univ SS Antonio & Biagio & Cesare Ar, Res & Innovat Dept DAIRI, SSD Res Labs, Res Training Innovat Infrastruct, Via Venezia 16, I-15121 Alessandria, ItalyAzienda Osped Univ SS Antonio & Biagio & Cesare Ar, Res & Innovat Dept DAIRI, SSD Res Labs, Res Training Innovat Infrastruct, Via Venezia 16, I-15121 Alessandria, Italy
Roveta, Annalisa
Bertolotti, Marinella
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机构:
Azienda Osped Univ SS Antonio & Biagio & Cesare Ar, Res & Innovat Dept DAIRI, SSD Res Labs, Res Training Innovat Infrastruct, Via Venezia 16, I-15121 Alessandria, ItalyAzienda Osped Univ SS Antonio & Biagio & Cesare Ar, Res & Innovat Dept DAIRI, SSD Res Labs, Res Training Innovat Infrastruct, Via Venezia 16, I-15121 Alessandria, Italy
Bertolotti, Marinella
Maconi, Antonio
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Azienda Osped Univ SS Antonio & Biagio & Cesare Ar, Res & Innovat Dept DAIRI, Res Training Innovat Infrastruct, Via Venezia 16, I-15121 Alessandria, ItalyAzienda Osped Univ SS Antonio & Biagio & Cesare Ar, Res & Innovat Dept DAIRI, SSD Res Labs, Res Training Innovat Infrastruct, Via Venezia 16, I-15121 Alessandria, Italy
机构:
Yerevan State Univ, Dept Solid State Phys, A Manukian 1, Yerevan 0025, ArmeniaYerevan State Univ, Dept Solid State Phys, A Manukian 1, Yerevan 0025, Armenia