THz Fingerprints of Cement-Based Materials
dc.contributor.author | Sánchez Dolado, Jorge | |
dc.contributor.author | Goracci, Guido | |
dc.contributor.author | Duque Redondo, Eduardo | |
dc.contributor.author | Martauz, Pavel | |
dc.contributor.author | Zuo, Yibing | |
dc.contributor.author | Ye, Guang | |
dc.date.accessioned | 2020-10-15T08:59:24Z | |
dc.date.available | 2020-10-15T08:59:24Z | |
dc.date.issued | 2020-09-21 | |
dc.identifier.citation | Materials 13(18) : (2020) // Article ID 4194 | es_ES |
dc.identifier.issn | 1996-1944 | |
dc.identifier.uri | http://hdl.handle.net/10810/46905 | |
dc.description.abstract | To find materials with an appropriate response to THz radiation is key for the incoming THz technology revolution. Unfortunately, this region of the electromagnetic spectra remains largely unexplored in most materials. The present work aims at unveiling the most significant THz fingerprints of cement-based materials. To this end transmission experiments have been carried out over Ordinary Portland Cement (OPC) and geopolymer (GEO) binder cement pastes in combination with atomistic simulations. These simulations have calculated for the first time, the dielectric response of C-S-H and N-A-S-H gels, the most important hydration products of OPC and GEO cement pastes respectively. Interestingly both the experiments and simulations reveal that both varieties of cement pastes exhibit three main characteristic peaks at frequencies around ~0.6 THz, ~1.05 THz and ~1.35 THz, whose origin is governed by the complex dynamic of their water content, and two extra signals at ~1.95 THz and ~2.75 THz which are likely related to modes involving floppy parts of the dried skeleton. | es_ES |
dc.description.sponsorship | This work is partially supported by the Gobierno Vasco-UPV/EHU project IT1246-19 and the Spanish Ministry of Science, Innovation and Universities projects PCI2019-103657 and RTI2018-098554-B-I00. Besides, the economic support from POVAZSKA and SKKC foundation is also acknowledged. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | MDPI | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | |
dc.subject | THz characterization | es_ES |
dc.subject | atomistic modelling | es_ES |
dc.subject | cementitious structure | es_ES |
dc.title | THz Fingerprints of Cement-Based Materials | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.date.updated | 2020-09-25T13:31:08Z | |
dc.rights.holder | 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). | es_ES |
dc.relation.publisherversion | https://www.mdpi.com/1996-1944/13/18/4194 | es_ES |
dc.identifier.doi | 10.3390/ma13184194 | |
dc.departamentoes | Química física | |
dc.departamentoeu | Kimika fisikoa |
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Except where otherwise noted, this item's license is described as 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).