Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/30934
Título: | Non-destructive microtomography-based imaging and measuring laboratory-induced degradation of travertine, a random heterogeneous geomaterial used in urban heritage |
Autor(es): | Maurício, António Figueiredo, Carlos Alves, C. A. Simões Pereira, Manuel |
Palavras-chave: | X-ray microtomography Travertine Sulphate-induced stone decay Geomaterials/environment interactions Random heterogeneous materials |
Data: | 2013 |
Editora: | Springer |
Revista: | Environmental Earth Sciences |
Resumo(s): | The aim of this study is to apply X-ray microfocus computed microtomography (μ-XCT), a promising non-destructive 3D microscopy imaging technique, based on measurements of X-ray linear path attenuation coefficient, in order to study a Portuguese travertine, a random heterogeneous geomaterial used in urban heritage constructions. This study evaluates the impact of soluble sulphate salt–induced decay phenomena on texture characteristics at a micrometric scale. This is done to better describing, imaging, measuring and understanding the impact of an artificially induced sulphate-decay process on petrographic/petrophysical properties. A Portuguese travertine was chosen as the object of our study. Its laboratory-induced changes were systematically monitored, using non-destructive techniques, to determine voids (pores + fractures)/matrix fractions and size spectrum evolution based on 3-D images. This investigation demonstrates that the μ-XCT potential constitutes a valid complementary tool when analysing decay processes of complex natural materials in different environmental conditions. It clearly provides suggestive and important qualitative and/or quantitative estimates, at different spatial scales, of environmentally induced stone voids/matrix network spatial structure-texture evolution correlations. Further qualitative/quantitative parameterization assessment and statistical validation will be the next step to be taken on this study. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/30934 |
DOI: | 10.1007/s12665-013-2311-5 |
ISSN: | 1866-6299 |
Versão da editora: | http://link.springer.com/article/10.1007%2Fs12665-013-2311-5 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CIG-R - Artigos (Papers) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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MaurícoEtAl2013.pdf Acesso restrito! | 148,44 kB | Adobe PDF | Ver/Abrir |