Beanspruchungen von Naturwerksteinen durch Salz- und Eiskristallisation im Porenraum sowie hygrische Dehnungsvorgänge

Ruedrich, Joerg; Kirchner, Dirk; Seidel, M.; Siegesmund, Siegfried

doi:10.1127/1860-1804/2005/0156-0059

Cited by 16 publications

(10 citation statements)

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“…The length change of the Krensheimer Muschelkalk is within the accuracy of measuring (Table 3). Generally, hydric dilatation is anisotropic in nature, and values for anisotropy of about 50% are reported in the literature (Rüdrich et al 2005). With respect to the rocks from the Cologne Cathedral, only the Bozanov and Obernkirchner sandstones show a medium anisotropy.…”

Section: Moisture Expansion--hydric Dilatation and Hygric Dilatationmentioning

confidence: 98%

“…Material failure occurs, when stresses induced by mechanical weathering processes exceed the strength of the material. In respect to frost and salt deterioration resistance, damage occurs when the stresses due to salt and ice crystallization exceed the tensile strength (Rüdrich et al 2005). The strength properties correlate to the grain fabric cohesion.…”

Section: Discussionmentioning

confidence: 99%

“…This latter effect is relevant for all minerals, and significant moisture expansion is correlated to a large amount of micropores (\0.1 lm) (Ruedrich et al 2010a). According to Rüdrich et al (2005), hygric dilatation is essentially a reversible process, i.e., no residual strain is ascertained after reducing relative humidity back to the starting value. This only applies for demineralized water, which means by the presence of damaging salts in building stones, these processes might be affected remarkably.…”

Section: Discussionmentioning

confidence: 99%

“…This time dependence is ascribed to different pore space properties. Where stones with wellinterconnected pores and relatively high porosities show a fast expansion, stones with a less well-interconnected pore space have a slower expansion (Rüdrich et al 2005).…”

Section: Moisture Expansion--hydric Dilatation and Hygric Dilatationmentioning

confidence: 99%

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Quality assessment of replacement stones for the Cologne Cathedral: mineralogical and petrophysical requirements

2011

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Owing to its long building history, different types of building stones comprised the construction of the Cologne Cathedral. Severe damage is observed on the different stones, e.g., sandstones, carbonate, and volcanic rocks, especially when the different stone materials neighbor the medieval ''Drachenfels trachyte'' from the ''Siebengebirge''. The question arises, ''Is the insufficient compatibility of the implemented building materials causatively related to the strong decay of the Drachenfels trachyte?'' The present investigations focus on the petrography and mineralogical composition of eight different stones from the Cologne Cathedral. Petrophysical data, i.e., phase content, moisture and thermal characteristics as well as strength properties are determined and discussed in correlation to each other, showing that not only in terms of lithology great differences exist, but also the petrophysical properties strongly diverge. The ascertained parameters are discussed in view of the deterioration behavior and decay mechanisms of the different stones. To evaluate the compatibility of original, replacement and modern building materials, the properties of the investigated stones are compared to those of Drachenfels trachyte by means of constraints given in the literature. Besides optical properties, petrophysical criteria are also defined as well as strength values. It could be shown that primarily moisture properties, i.e., capillary and sorptive water uptake, water saturation, drying processes and moisture dilatation can be addressed to the deterioration processes.

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Section: Moisture Expansion--hydric Dilatation and Hygric Dilatationmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Moisture Expansion--hydric Dilatation and Hygric Dilatationmentioning

confidence: 99%

See 2 more Smart Citations

Quality assessment of replacement stones for the Cologne Cathedral: mineralogical and petrophysical requirements

2011

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“…Siegesmund and Dürrast, 2014;Ruedrich et al, 2005Ruedrich et al, , 2010Viles et al, 1997;Poschlod, 1990;Fitzner and Snethlage, 1983;Fitzner, 1970;Hirschwald, 1908) porosity has a key role in the analysis of stone weathering due that porosity has a direct relationship to other stone physical properties. Lucia (1999Lucia ( , 1995Lucia ( , 1983 found that high porosity is considered a negative factor for the stone behavior as construction material, and it is related to lower compressional resistance and a high susceptibility to be weathered.…”

Section: Porosity and Pore Size Distributionmentioning

confidence: 99%

Rock deterioration in the masonry walls of the Cathedral Basilica of Aguascalientes, Mexico

Padilla-Ceniceros¹,

Pacheco-Martínez²,

López-Doncel³

et al. 2017

Rev. Mex. Cien. Geol.

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Padilla-Ceniceros, R., Pacheco-Martínez, J., López-Doncel, R.A., Orenday-Tapia, E.E., 2017, Rock deterioration in the masonry walls of the cathedral basilica of Aguascalientes, Mexico: Revista Mexicana de Ciencias Geológicas, v. 34, núm. 2, p. 138-149. ABSTRACTHigh porosity volcanic tuffs were used to elaborate the masonry of the walls of the Cathedral of Aguascalientes City, at central México. At present, masonry stones show evidences of deterioration, mainly in the lower part of the walls outside the building due to a raising moisture effect and environmental pollution which are causing damages such as flaking, scaling and black crusts. Petrological studies including X-Ray diffractometry and petrophysical analysis as porosity, density and bulk-density determinations as well stone damages survey were carried out to get information on the used rock types to elaborate the masonry walls, their petrological characteristics and physical harms. No compresional testings were developed due to scarse of stone samples, but there are reported data for these stones by others authors. The results allow to identify the stone type most prone to deteriorate, the mechanism of stone deterioration, and the factors accelerating deterioration. Although results have a pragmatic use for restoration works of the Cathedral of Aguascalientes City, the methodology applied could be used for determining the stone vulnerability to deteriorate in heritage buildings anywhere abroad.Key words: tuff rock; moisture properties; cultural heritage; Aguascalientes; Mexico. RESUMEN Se utilizaron tobas volcanicas de alta porosidad para construir los muros de mamposteria de la Catedral de la ciudad de

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Salt and ice crystallisation in porous sandstones

2006

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Beanspruchungen von Naturwerksteinen durch Salz- und Eiskristallisation im Porenraum sowie hygrische Dehnungsvorgänge

Cited by 16 publications

References 0 publications

Quality assessment of replacement stones for the Cologne Cathedral: mineralogical and petrophysical requirements

Quality assessment of replacement stones for the Cologne Cathedral: mineralogical and petrophysical requirements

Rock deterioration in the masonry walls of the Cathedral Basilica of Aguascalientes, Mexico

Salt and ice crystallisation in porous sandstones

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