Alteration Features of Stones Applied in Underground Metro Stations
| Autor: | Carlos Figueiredo, Luís Aires-Barros, Paula Figueiredo, Carlos Alves, António Maurício |
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| Rok vydání: | 2010 |
| Předmět: |
Engineering
business.industry Mechanical Engineering Metamorphic rock Non invasive 010501 environmental sciences 010502 geochemistry & geophysics Condensed Matter Physics 01 natural sciences Visual inspection Petrography Mining engineering Stairs Mechanics of Materials General Materials Science Geotechnical engineering Sedimentary rock business 0105 earth and related environmental sciences |
| Zdroj: | Materials Science Forum. :1292-1299 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.636-637.1292 |
| Popis: | Several types of stones (igneous, sedimentary and metamorphic) are found applied in pavements, stairs and walls of the underground stations of the Lisbon Metropolitan System, Portugal. A field study based solely on non-destructive and non invasive visual inspection of these stations is presented, aiming to identify different transformations of applied stones and discuss its relation with the stone characteristics. This field study has pointed to relevant issues regarding durability of stone materials namely when used in pavements and stairs. The most striking aspect is the frequently marked variable behaviour of stones from a given rock type under the same use conditions, with heterogeneities and discontinuities that seem to cause irregularity from the early stages and further increase with time, having more accentuated consequences (in terms of intensity of surface irregularity) in some types of limestones. The observations collected could be relevant for the discussion of characteristics relevant for the quality control of these materials (namely at the quarry level), including the selection of stones for future substitutions. There is, therefore, the need for a more complete study comprising detailed petrographic studies and laboratory tests both from the applied stones and from the supplying quarries. |
| Databáze: | OpenAIRE |
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