Paper Title:
Alteration Features of Stones Applied in Underground Metro Stations
  Abstract

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.

  Info
Periodical
Materials Science Forum (Volumes 636-637)
Edited by
Luís Guerra ROSA and Fernanda MARGARIDO
Pages
1292-1299
DOI
10.4028/www.scientific.net/MSF.636-637.1292
Citation
C. Alves, C. Figueiredo, P. Figueiredo, A. Maurício, L. Aires-Barros, "Alteration Features of Stones Applied in Underground Metro Stations", Materials Science Forum, Vols. 636-637, pp. 1292-1299, 2010
Online since
January 2010
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Price
$32.00
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