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1
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Koncepcja oceny stanu kamiennych obiektów zabytkowych

100%
Krzywobłocka-Laurów R.
Ochrona Zabytków
|
1998
|
issue 1
31-34
EN
A rational conservation of historical monuments requires a synthetic and uniform gathering of data. The latter make it possible to compare the state of the preservation of the given monument in assorted periods of its exploitation, with consideration for conducted conservation and its effectiveness. The author considers the conception of conducting research and conservation while assessing the state of the preservation of the stone material in the given monument.
2
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Badania składu mineralnego i struktury wybranych piaskowców dla potrzeb konserwacji

63%
Jarmontowicz A., Krzywobłocka-Laurów R.
Ochrona Zabytków
|
1995
|
issue 1
81-84
EN
The identification of stone material in ancient monuments upon the basis of macroscopic estimations or data obtained from historical documents is often deceptive. An adequate set of data in the form of a data bank concerning the mineral composition and structure of stone materials, proves to be of great help. In order to elaborate such a set, the mineral composition of selected sandstones used in old buildings in Polish territories has been examined. The obtained results concerning the mineral composition and structure of the sandstones explain some of their technical features such as imbibition.
3
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Skład zapraw w murach obronnych Starego Miasta w Warszawie

63%
Jarmontowicz A., Krzywobłocka-Laurów R.
Ochrona Zabytków
|
1996
|
issue 4
359-364
EN
The authors examined the composition o f twelve samples o f mortar from the defensive binding o f brick walls in the Old Town in Warsaw. The researchers applied the X-ray method, thermal analysis and observations with an optical and scanning microscope. The composition o f the hardened mortar made it possible to determine the original composition. Two groups: lime and cement-lime were distinguished from the point o f view o f the composition o f the mortar in question. A characteristic feature o f the cement-lime mortar was the differentiated contents o f the binder. The relation between the binding and sand in this case oscillated from 1:1,8 to 1:6,2.
4
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Stan kamieniarki w parku Dolina Szwajcarska w Warszawie

63%
Jarmontowicz A., Krzywobłocka-Laurów R.
Ochrona Zabytków
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1997
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issue 2
155-157
EN
Research and observation conducted in 1988 and 1997 determined the state of the masonry in „Dolina Szwajcarska” in Warsaw. The masonry in question is composed mainly of sandstone. The state of the majority of the stone elements is highly unsatisfactory. The basic forms of the damage are considerable: dirty and peeling outer surface layers of the sandstone, salinity, very large missing parts of the stone material, and local gaps in filling in the joints between the stone blocks. Owing to the site of „Dolina Szwajcarska” in the representative part of town, the masonry should be urgently repaired.
5
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Skład materiału płaskorzeźby "Wyprawa na czambuły tatarskie" w Wilanowie

63%
Jarmontowicz A., Krzywobłocka-Laurów R.
Ochrona Zabytków
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1997
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issue 1
75-79
EN
Prior to conservation completed in 1994, the bas relief material was subjected to specialist examination in order to determine its mineral composition, and torecreate upon this base the original composition. Samples taken from the original bas relief, dating from the end o f the seventeenth century, and repairs conducted in the inter-war and postwar period, were examined. Research was carried out by means o f the following methods: X-ray and thermal analysis, macroscopic and microscopic observation with a scanning electron microscope, and auxiliary chemical assay. The obtained results made it possible to ascertain that the bas relief was made of plaster mortar with an addition o f lime. In the initial composition o f the mortar, the ratio o f the dry binder to the mass of the filler totalled 1:2,4. The binder was semihydrate calcium sulfate and lime. The contents o f the former was much larger than that of the lime. The filler was high-silica sand in which the dominating size o f grains oscillated from 0,1 to 0,4 mm. An almost identical composition and structure belonged to material originating from inter-war repairs. A markedly different composition and structure were found in samples which came from postwar conservation carried out with lime mortar, with a distinctly smaller part played by the binder; consequently, the samples differed not only as regards the type but also the amount of binder in comparison to original seventeenth-century mortar.
6
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Wpływ stabilizatora chemicznego na strukturę gipsowych spoin w murach zabytkowych

51%
Jarmontowicz A., Krzywobłocka-Laurów R., Lehmann J.
Ochrona Zabytków
|
1995
|
issue 1
94-96
EN
Plans are made to apply the chemical consolidation of gypsum material in the case of gypsum joints found in ancient walls. Samples prepared in laboratory conditions have been analysed before and after the stabilising treatment. A comparative analysis of alterations in the structure, caused by the treatments has been carried out. The stabilised samples testified to a distinct sealing of the superficial layers of the material. This procedure is the consequence of the crystallisation of new products which are the outcome of the components of the stabiliser, deposited inside the pores of the gypsum material and on its surface.
7
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Wpływ zastosowanego stabilizatora chemicznego na strukturę gipsowych spin murów zabytkowych

51%
Lehmann J., Jarmontowicz A., Krzywobłocka-Laurów R.
Studia Lednickie
|
1996
|
vol. 4
407-420
DE
Es wurde eine chemische Befestigung des Gipsmaterials verwendet. Es wird geplant, solch ein Verfahren für Gipsfugen in altertümlichen Mauern zu verwenden. Die in Laborbedingungen vorbereiteten Proben wurden vor und nach dem verwendeten Stabilisierungsverfahren analysiert. Es wurde eine Vergleichsanalyse der Probenstrukturänderungen unter dem Einfluß des verwendeten Verfahrens durchgeführt. Die stabilisierten Proben kennzeichnete eine deutliche Abdichtung der Oberflächenschicht des Materials. Diese Abdichtung erfolge durch die Kristalisierung der aus Bestandteilen des Stabilisators neuentstandenen Gebilden, die sich in Poren des Gipsmaterials und auf dessen Oberfläche ablagerten.
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