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Open AccessArticle

Multi-Analytical Characterization of Corvins’ Castle—Deserted Tower. Construction Materials and Conservation Tests

1
Research Group “Evaluation and Conservation of Cultural Heritage”, National R&D Institute for Chemistry and Petrochemistry–ICECHIM, 202 Splaiul Independentei, 060021 Bucharest, Romania
2
Materials Engineering Department, Doctoral School of Materials Engineering, Valahia University of Târgovişte, 130105 Târgovişte, Romania
3
Institute of Multidisciplinary Research for Science and Technology, Valahia University of Târgovişte, 13 Sinaia Alley, 130004 Târgovişte, Romania
4
Corvins’ Castle, 331141 Hunedoara, Romania
*
Author to whom correspondence should be addressed.
Heritage 2020, 3(3), 941-964; https://doi.org/10.3390/heritage3030051
Received: 9 July 2020 / Revised: 14 August 2020 / Accepted: 19 August 2020 / Published: 20 August 2020
(This article belongs to the Special Issue Assessment and Protection of Cultural Heritage Masonry Structures)
The aim of this paper is to analyze the construction materials (mortars) of an architectural monument (Deserted Tower (Lilly Tower) from Corvins’ Castle, Romania). The mortars were characterized following a multidisciplinary approach, combining macroscopic observation with petrographic microscopy, mineralogical analysis (X-ray diffraction) and elemental analysis (X-ray fluorescence), hydric properties, and color of representative samples of the monument. The results revealed the use of gypsum mortars (produced by lumps with higher Fe content), with minor concentrations of crystalline dolomites of the Southern Carpathians, calcite, and quartz. The materials’ effective porosity and their water absorption capacity were high. A possible solution to consolidate the damaged area with some consolidation products (hydroxyapatite carbonate and its derivatives with Ag and Sr) was investigated, too. The interactions between the mortar’s specimens and the effectiveness of the consolidation treatments were evaluated by physico-chemical analyses (molecular structure by X-ray powder diffraction (XRPD), wavelength dispersive X-ray fluorescence (WDXRF), dynamic light scattering (DLS)), morphological characterization by microscopic techniques as SEM-EDS, TEM, and physical and mechanical investigations (peeling test and compressive strength). Results were drawn based on historical, in situ observations, and analytical data, and put into evidence the composition, high weathering degree, and the possibility to surface consolidate with Sr-CHAp. View Full-Text
Keywords: mortar; Corvins’ Castle—Deserted Tower; conservation; restoration mortar; Corvins’ Castle—Deserted Tower; conservation; restoration
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MDPI and ACS Style

Ion, R.M.; Iancu, L.; David, M.E.; Grigorescu, R.M.; Trica, B.; Somoghi, R.; Vasile, S.F.; Dulama, I.D.; Gheboianu, A.I.; Tincu, S. Multi-Analytical Characterization of Corvins’ Castle—Deserted Tower. Construction Materials and Conservation Tests. Heritage 2020, 3, 941-964. https://doi.org/10.3390/heritage3030051

AMA Style

Ion RM, Iancu L, David ME, Grigorescu RM, Trica B, Somoghi R, Vasile SF, Dulama ID, Gheboianu AI, Tincu S. Multi-Analytical Characterization of Corvins’ Castle—Deserted Tower. Construction Materials and Conservation Tests. Heritage. 2020; 3(3):941-964. https://doi.org/10.3390/heritage3030051

Chicago/Turabian Style

Ion, Rodica M.; Iancu, Lorena; David, Madalina E.; Grigorescu, Ramona M.; Trica, Bogdan; Somoghi, Raluca; Vasile, Sorina F.; Dulama, Ioana D.; Gheboianu, Anca I.; Tincu, Sorin. 2020. "Multi-Analytical Characterization of Corvins’ Castle—Deserted Tower. Construction Materials and Conservation Tests" Heritage 3, no. 3: 941-964. https://doi.org/10.3390/heritage3030051

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