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- Zeitschriftenartikel (11) (entfernen)
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- Kulturguterhaltung (4)
- Airbrasive (2)
- Rasterelektronenmikroskopie (2)
- AOD slag (1)
- Environmental evaluation (1)
- Gypsum plasterboards (1)
- Gypsum waste (1)
- Historische Glasmalereien (1)
- Hydrazin (1)
- Metal recovery (1)
Organisationseinheit der BAM
Zur Alterung von Smalten - Materialuntersuchungen bei der Restaurierung eines Gründerzeit-Mosaiks
(2001)
Das Mosaik "Muse der Kunst" war in Berlin-Mitte mehrere Jahrzehnte hinter einer Vermauerung verborgen, bevor es nun wiederentdeckt und restauriert wurde. Die Smalten zeigten zum Teil Risse, Verkrustungen und Farbveränderungen in Folge von Alterungsprozessen der historischen Materialien. Einzelne Deckgläser von Goldsmalten waren abgesprengt.
Dürfen Glasmalereien des 19. Jahrhunderts bei der Restaurierung einem Neubrand unterzogen werden?
(2001)
New horizons of the structural characterization of stainless steel slags by X-ray powder diffraction
(2007)
Gypsum is widely used in the construction sector and its worldwide consumption has been increasing for several decades. Depending on the life-time of the used gypsum products, an increase of gypsum in construction and demolition waste follows. Especially against the background of a circular economy, the recycling of waste gypsum is of growing importance. However, the use of recycled gypsum makes only sense if it is environmentally friendly. Therefore, an evaluation of the environmental impacts of an industrial-scale processing for the recycling of post-consumer gypsum waste was conducted. The evaluation was performed with an established life cycle assessment software. Original data provided by industry and complementary data from a database for life cycle assessments were used for the calculations. Two scenarios for recycled gypsum with different transportation distances were calculated. These results are compared with results of the environmental evaluation of gypsum derived from coal-fired power plants (FGD gypsum) and natural gypsum. The results show that utilization of recycled gypsum can be environmentally advantageous compared to the use of natural gypsum or FGD gypsum, especially in the impact categories land transformation and resource consumption (abiotic depletion potential). For most environmental impact categories the specific transportation distances have a strong influence.
Stained glass is a particularly sensitive medium that in many churches has stillnot received sufficient protection against destructive influences of many andvarious kinds. Over long periods of time, nearly all materials are subject tochemical and physical change. The dramatic scale on which the processes of decayoften occur results from the influence of corrosive gases that are part of themix of today’s atmosphere. A basic requirement in the preservation of anyhistorical monument is therefore interdisciplinary collaboration; only the jointefforts of art historians, restorers and technicians, as well as scientists,offer a chance to protect our artistic and cultural heritage from decline.
Measures to protect, conserve and restore stained glass are carried out by glassstudios. The project on which this chapter reports provides support for thispractical work through scientific back-up. In order to clarify what are verycomplex issues, a brief explanation of the scientific/technical context followshere, to preface the exposition of the basic questions posed.