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Zastosowanie tomografii komputerowej do badania rozmieszczenia i udziału tworzywa w drewnie impregnowanym strukturalnie

100%

Paciorek M.

Ochrona Zabytków

1992

issue 3

159-172

The article presents the possibilities and effects of the application of computer tomography for research into the structural impregnation of wooden historical objects. The herefore employed research methods do not provide full information as regards the obtained degree of impregnation, participation and arrangement of the material in the porous structure of the impregnated object. Their fault lies in the fact that apart from insufficient ineffectivennes and complicated technique, those methods are highly destructive and fragmentary, calling for cutting or taking samples of the material under examination. By way of contrast, computer tomography, used for the first time in Poland, gives a chance for studying the process of impregnation together with the accompanying changes in the structure on one material. At the same time, it enables to obtain a visual picture and quantitative estimation of those changes in the whole structure, in a way which is non-destructive and offers a practical estimation of the effects of impregnation on an arbitraily chosen part of the historical object. With this methods, the usefulness of chosen thermoplastic material - Winacet R-50, Osolan KL, Osolan К and Paraloid B-72 - was judged for reinforcing impregnation, by basing ourselves on their allocation in limewood, under certain conditions created by the impregnation technology. The interesting possibilities of computer tomography were also used in research concerning the polychrome wooden sculpture „King Casimir the Great” (1380) in the Jagiellonian University Museum in Cracow, which was impregnated in a vaccuum with a 20 per cent solution of Paraloid B-72 in xylene. (translated by A. Rodzińska-Chojnowska)

Konserwacja ceglanych fasad gotyckiego kościoła św. Marka w Krakowie

51%

Płuska I., Paciorek M., Kozieł K.

Ochrona Zabytków

1995

issue 1

46-49

The conservation of decayed brick-stone facades has been proceeded by laboratory investigations as well as by a diagnosis of the causes of destruction. Descriptive, photographic and drawing documentation has been carried out. The first stage of the work consisted of archeological excavations conducted in the vicinity of the church. A series of construction-building operations of prophylactic importance has been conducted. All historical stratifications have been distinguished. The loss of bricks has been supplemented on the basis of mineral components, and the joints have been reconstructed following original forms, surface quality and colouring. The mediaeval stone socle of the church was reconstructed. A whole brick weft has been structurally consolidated and hydrophobized. A suitable aesthetic arrangement has been achieved through the removal of foreign and stylistically jarring material which was replaced with technologically new and aesthetically integral elements. The Gothic church of St. Mark is an example of a complex approach to technical and aesthetic conservation which involves the participation of experts representing different fields.

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2 Ochrona Zabytków

2 Paciorek M.

1 Kozieł K.

1 Płuska I.

1 1995

1 1992

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Zastosowanie tomografii komputerowej do badania rozmieszczenia i udziału tworzywa w drewnie impregnowanym strukturalnie

Konserwacja ceglanych fasad gotyckiego kościoła św. Marka w Krakowie