English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/62238
Share/Impact:
Statistics
logo share SHARE   Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Exportar a otros formatos:

Title

Pozorovanie zmien travertínov vyplývajúcich z teplotnej záťaže

Other TitlesMonitoring of travertine changes resulting from thermal load
AuthorsKompaníková, Z.; Durmeková, T.; Vlčko, J.; Brček, M.; Gómez-Heras, Miguel
Keywordstravertine
thermal load
linear thermal expansion
ultrasound velocity
colour change
surface roughness
Issue Date2011
PublisherComenius University (Bratislava)
CitationKompaníková, Z., Vlcko, J., Durmeková, T., Brcek, M., Gómez-Heras, M. (2011). Pozorovanie zmien travertínov vyplývajúcich z teplotnej zát’aže [Monitoring of travertine changes resulting from thermal load]. Acta Geologica Slovaca, 3, 83-94.
AbstractTravertines, despite of their unique noble appearance change their properties when affected by ageing like any other building and decorative stone. Some of the most noticeable changes are influenced by temperature fluctuations. From this point of view, the main purpose of presented research was to determine the influence of multiple temperature cycles for travertine from Spišské Podhradie and Ludrová in temperature range of 25°C to 60°C corresponding to summer period temperature regimes. The weakening of the rock material by heating was determined by non-destructive techniques before and after thermal load. By ultrasound apparatus was observed by means of ultrasonic velocities change, when higher values of ultrasonic velocities were determined parallel to the bedding while the perpendicular direction had slower velocities. The change of colour was specified by spectrophotometer and no distinct visualu color change was determined with increasing temperature. By non-contact profilometer surface roughness data of samples profiles primarily indicate a decrease of roughness during heating. The coefficient of linear thermal expansion acquired by thermodilatometer varied from 4.6.10-3 to 7.8.10-3 mm.m-1.°C-1 for travertine from Spišské Podhradie and 5.3.10-3 to 7.3.10-3 mm.m-1.°C-1 for travertine from Ludrová. This parameter characterizes the materials response to heating or cooling. The techniques mentioned above are non-destructive and some of them are innovative in laboratory testing.
Publisher version (URL)http://www.geopaleo.fns.uniba.sk/ageos/articles/abstract_en.php?path=kompanikova_et_al&vol=3&iss=1
URIhttp://hdl.handle.net/10261/62238
ISSN1338-0044
E-ISSN1338-5674
Appears in Collections:(IGEO) Artículos
Files in This Item:
File Description SizeFormat 
AGS_2011_3_83.pdf1,01 MBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.