Affiliation:
1. Czech Technical University in Prague
2. CTU in Prague
Abstract
The aim of the contribution is to present the results of research focused on cement mineralogical composition changes and their influence on physical-mechanical properties of sandstones. Three types of Czech sandstones were tested during this experiment Hořice, Kocběře and Božanov. The sandstone samples were treated in the climatic chamber in order to simulate weathering processes that are typical for winter period in Prague. The influence of road salts was also taken into consideration. For the purposes of mineralogical changes determination the sandstone cement was separated and subsequently analyzed using X-Ray diffraction a DTA/TG analysis. The physical-mechanical properties such as e.g. uniaxial compressive strength, water absorption and open porosity were determined before and after the climatic treatment to enable evaluation of the influence of weathering processes.
Publisher
Trans Tech Publications, Ltd.
Reference6 articles.
1. K. Kovářová, Prague's Winter Climatic Conditions – A Case Study of Sandstone Weathering, in: 12th International Multidisciplinary Scientific GeoConference, SGEM2012 Conference Proceedings, vol. 1. Albena, 2012, pp.265-270.
2. K.H. Ip, B.H. Stuart, P.S. Thomas, A.S. Ray, Thermal characterization of the clay binder of heritage Sydney sandstones, Journal of Thermal Analysis and Calorimetry, 92 (1) (2008) 97-100.
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4. ČSN EN 1926 Natural stone test methods - Determination of compressive strength. (2007).
5. ČSN EN 13755 Natural stone test methods - Determination of water absorption at atmospheric pressure. (2008).
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1 articles.
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