dc.contributor.author | Leemann, Andreas | |
dc.contributor.author | Shi, Zhenguo | |
dc.contributor.author | Lindgård, Jan | |
dc.date.accessioned | 2020-08-17T10:33:25Z | |
dc.date.available | 2020-08-17T10:33:25Z | |
dc.date.created | 2020-08-14T11:13:15Z | |
dc.date.issued | 2020 | |
dc.identifier.issn | 0008-8846 | |
dc.identifier.uri | https://hdl.handle.net/11250/2672597 | |
dc.description.abstract | Amorphous and crystalline alkali silica reaction (ASR) products formed in aggregates of two different concrete mixtures exposed to the concrete prim test both at 38 °C and 60 °C have been analysed by scanning electron microscope with energy dispersive X-ray spectroscopy and by Raman microscopy. Additionally, amorphous ASR products were synthesized and analysed with Raman microscopy and 29Si nuclear magnetic resonance. Amorphous ASR products display a higher Na/K-ratio than crystalline ones. Both types of products display a structure dominated by Q3-sites (Si-tetrahedra with three bridging oxygen atoms typical for a layer structure) with a secondary amount of Q2-sites (Si-tetrahedra with two bridging oxygen atoms typical for a chain structure). Temperature in the CPT alters the structure of the crystalline ASR. While the Raman spectra of the product formed at 38 °C is identical to the one formed in concrete structures, the one of the 60 °C product corresponds to K-shlykovite. | en_US |
dc.language.iso | eng | en_US |
dc.rights | CC BY 4.0 | * |
dc.rights.uri | http://creativecommons.org/licenses/BY/4.0/ | * |
dc.subject | Concrete | en_US |
dc.subject | Alkali-silica reaction | en_US |
dc.subject | Shlykovite | en_US |
dc.subject | Microstructure | en_US |
dc.subject | Composition | en_US |
dc.title | Characterization of amorphous and crystalline ASR products formed in concrete aggregates | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.rights.holder | © 2020 The authors | en_US |
dc.subject.nsi | VDP::Teknologi: 500 | en_US |
dc.source.volume | 137 | en_US |
dc.source.journal | Cement and Concrete Research | en_US |
dc.identifier.doi | 10.1016/j.cemconres.2020.106190 | |
dc.identifier.cristin | 1823317 | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 2 | |