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Université de Fribourg

Old Restorations and New Discoveries in the Nativity Church, Bethlehem

Bacci, Michele

In: Convivium : exchanges and interactions in the arts of medieval Europe, Byzantium, and the Mediterranean, 2015/2/2//36-59

Since 2010 the Nativity Church in Bethlehem underwent a number of significant restoration works, including the refurbishing of the wooden roof, the consolidation of the Armenian door, and, starting from March 2015, the cleaning and consolidation of the mosaic surfaces. This recent work lead to important discoveries, including the recovery of the figure of an angel which had been hidden under the...

Haute Ecole Arc Conservation-Restauration

Les adhésifs à photopolymérisation radicalaire employés pour le cpllage structural du verre en conservation-restauration : Etude de la résistance au cisaillement de 4 adhésifs optiques polymérisables aux UV

Gillioz, Sandra

Mémoire de master : Haute Ecole Arc Conservation-Restauration, 2014.

Because their polymerization occurs in a few seconds under UV light, Ultraviolet light curing adhesives (UV adhesives) represent a seductive choice for the bonding of glass in conservation, especially when the fragments cannot be temporarily maintained. This thesis evaluated the suitability in terms of mechanical resistance of UV adhesives for the bonding of glass in conservation. Four UV...

Haute Ecole Arc Conservation-Restauration

Traitement électrolytique localisé des produits de corrosion du plomb et des alliages plomb étain : Mise en application du pinceau électrolytique, le PLECO

Fontaine, Célia

Mémoire de master : Haute Ecole Arc Conservation-Restauration, 2014.

In museum and archive collections, sometimes feature objects made of lead or lead-tin alloys (PbSn). Kept in environments containing acetic acid vapors, these objects can develop an active corrosion. This manifests itself in the form of as white powdery corrosion products composed of basic lead carbonates and hydroxycarbonates. In the past, various chemical treatments could be used to remove it. ...

Haute Ecole Arc Conservation-Restauration

Die Lederfunde aus dem Schutthügel des römischen Legionslagers Vindonissa. Untersuchungen zum Konservierungszustand

Lang, Urs

Mémoire de master : Haute Ecole Arc Conservation-Restauration, 2014.

The garbage heap of the legionary camp of Vindonissa in the Canton of Aargau is well known for the leather finds it has produced. These leather objects were conserved, starting in 1941, by August Gansser and were mounted on 487 carton frames. By the 50's, he developed different methods of conservation and kept record of his activities in handwritten notebooks. The most commonly employed method...

Haute Ecole Arc Conservation-Restauration

La problématique de la radioactivité dans les objets patrimoniaux : identification, évaluation et gestion

Daval, Marion

Mémoire de master : Haute Ecole Arc Conservation-Restauration, 2012.

The present work deals with this delicate and often ignored problem. This work has been realized with the purpose of giving museums protocols of behaviour allowing for an ideal reaction in the presence of radioactive substances and to avoid any incident. The four following questions are treated: · What radioactive objects are potentially found in a museum and how can one identify them? · What...