Abstract
Processes associated with crystallization and salt migration in building materials are important factors contributing to material degradation and subsequent damage. Archaeological structures located in the area of Prague Castle, for which the presence of salts and frequent climatic fluctuations are typical, are particularly vulnerable to salt-related deterioration.
As part of the monitoring and closer research of the archaeological excavations of Prague Castle, long-term measurements of temperature and humidity were carried out in locations across the site. This data collection provided information on the effect of climatic cycles, including temperature and relative humidity changes, in the building materials. It was confirmed that the local opuka stone is highly susceptible to salt contamination and damage. The climate fluctuations cause critical conditions for dissolution and subsequent crystallization thresholds of the salts are regularly exceeded. This confirmed the significant impact of these cyclic changes in this archaeological area.
In conjunction with data obtained from measurements of climatic cycles and opuka stone properties from the Third Courtyard of Prague Castle, a laboratory-based experiment was designed. The aim was to observe the crystallization and migration of salt in specimens of opuka stone. Stone specimens were immersed in sodium sulphate solution and exposed to specific climatic conditions (20 ℃ and 80, 70, 50 and 40% RH) that led to salt crystallization. The behaviour of salt was also studied under conditions where water vapor passes through the specimens. This experiment enabled the determination of the risk of damage as a function of salt crystallization in the opuka stone.
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References
Goudie, A., Viles, H.: Salt Weathering Hazards, 1st edn. Wiley, Chichester, New York (1997)
Charola, A.E.: Salts in the deterioration of porous materials: an overview. J. Am. Inst. Conserv. 39, 327–343 (2000)
Doehne, E.: Salt weathering: a selective review Natural stone, weathering phenomena, conservation strategies and case studies. Geol. Soc. London Spec. Publ. 205, 51–64 (2001)
Delgado, J.M.P.Q., Guimarães, A.S., de Freitas, V.P., Antepara, V., Kočí, V., Černý, R.: Salt Damage and Rising Damp Treatment in Building Structures. Adv. Build. Technol. Constr. Mater. 2016, 1–13 (2016)
Carcangiu, G., Casti, M., Desogus, G., Meloni, P., Ricciu, R.: Microclimatic monitoring of a semi-confined archaeological site affected by salt crystallisation. J. Cult. Herit. 16(1), 113–118 (2015)
Camuffo, D.: Microclimate for Cultural Heritage, 1st edn. Elsevier Science, Amsterdam (1998)
Arnold, A., Zehnder, K.: Salt weathering on monuments. Atti del 1 Simposio la conservazione dei monumenti nel bacino del Mediterraneo, Bari, pp. 31–58 (1989)
Becherini, F., Bernardi, A., Frassoldati, E.: Microclimate inside a semi-confined environment: valuation of suitability for the conservation of heritage materials. J. Cult. Herit. 11, 471–476 (2010)
Camuffo, D.: Physical weathering of stones. Sci. Total Environ. 67, 1–14 (1995)
Flatt, R.J.: Salt damage in porous materials: how high supersaturations are generated. J. Cryst. Growth 242(3–4), 435–454 (2002)
Maříková-Kubková, J.: History of Archaeological Research of Prague Castle. Správa Pražského hradu, Praha, pp. 530–547 (2022)
Borkovský, I.: Pražský hrad v době přemyslovských knížat. Academia, Praha, sv. Č. 6 (1969)
Maříková-Kubková, J., Herichová, I.: Witnesses of the 20th Century – a Challenge for the 21st Century: The Importance and the Sustainable Preservation of the Archaeological Areas of Prague Castle. Pamiatkový úrad Slovenskej republiky, Bratislava (2020)
Kozlovcev, P., Válek, J., Skružná, O.: Provenance study of raw materials used for lime making at Prague Castle during Medieval times. In: Proceedings of the 5th Historic Mortars Conference, Pamplona (2019)
EN 13755 (721149): Natural stone test methods – Determination of water absorption at atmospheric pressure. ICS 73.020; 91.100.15 (2008)
EN 1936 (721143): Natural stone test methods – Determination of real density and apparent density, and of total and open porosity. ICS 73.020; 91.100.15 (2007)
EN 772-11 (722635): Methods of test for masonry units – Part 11: Determination of water absorption of aggregate concrete, manufactured stone and natural stone masonry units due to capillary action and the initial rate of water absorption of clay masonry units ICS 91.100.15; 91.100.30 (2011)
EN 12370 (721144): Natural stone test methods – Determination of resistance to salt crystallisation. ICS 73.020; 91.100.15 (2020)
Lubelli, B., et al.: A new accelerated salt weathering test by RILEM TC 271-ASC: preliminary round robin validation. Mater. Struct. 55(238) (2022)
Schütznerová-Havelková, V.: The thousand-year-old building stone of Romanesque Prague. Bull. Int. Assoc. Eng. Geol. 19, 374–380 (1979)
Konta, J.: Stone of Gothic Pieta discovered in Bern. Comparison with Cretaceous marly chert from Prague. Appl. Clay Sci. 7(5), 357–366 (1993)
Přikryl, R., Lokajíček, T., Svobodová, J., Weishauptová, Z.: Experimental weathering of marlstone from Přední Kopanina (Czech Republic) – historical building stone of Prague. Build. Environ. 38(9), 1163–1171 (2003)
Knotková, D., Kudláček, I., Vlčková, J., Wasserbauer, R.: Monitoring of the influence of environmental impacts on cultural monuments. Proposal for a monitoring methodology on the example of St. Vitus Cathedral in Prague. Unpublished manuscript of the detailed final report for the period 1999–2001, ENVIROKOR Ltd., Prague (2001)
Přikryl, R.: Durability assessment of natural stone. Q. J. Eng. Geol.Hydrogeol. 46(4), 377–390 (2013)
Theoulakis, P., Moropoulou, A.: Microstructural and mechanical parameters determining the susceptibility of porous building stones to salt decay. Constr. Build. Mater. 11(1), 65–71 (1997)
Přikryl, R., Přikrylová, J., Racek, M., Weishauptová, Z., Kreislová, K.: Decay mechanism of indoor porous opuka stone: a case study from the main altar located in the St. Vitus Cathedral, Prague (Czech Republic). Environ. Earth Sci. 76(7), 1–15 (2017). https://doi.org/10.1007/s12665-017-6596-7
Siegesmund, S., Snethlage, R. (eds.): Stone in Architecture: Properties, Durability, 4th edn. Springer, Heilderberg (2011)
Rodriguez-Navarroa, C., Doehnea, E., Sebastian, E.: How does sodium sulfate crystallize? Implications for the decay and testing of building materials. Cem. Concr. Res. 30, 1527–1534 (2000)
Slížková, Z., Ševčík, R., Viani, A., Mácová, P.: Survey of salinity of masonry under III. courtyard at Prague Castle. Ústav teoretické a aplikované mechaniky AV ČR, v. v. i., 7 s. (2021)
Acknowledgement
The research has been carried out with the support of the Technology Agency of the Czech Republic, grant number TL03000603, program ETA, project title: “Archaeological areas of Prague Castle as part of the architecture and the national cultural identity in the post-war periods”.
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Kozlovcev, P., Painter, E.C., Kotková, K., Válek, J., Maříková-Kubková, J. (2024). Model Crystallization of Salts and Their Migration in Opuka Stone – The Local Historic Building Material of Prague Castle Area, Czech Republic. In: Endo, Y., Hanazato, T. (eds) Structural Analysis of Historical Constructions. SAHC 2023. RILEM Bookseries, vol 47. Springer, Cham. https://doi.org/10.1007/978-3-031-39603-8_45
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