Academic thesis

Pia Dölitzscher: Possibilities of conservation treatments of an acid volcanic tuff. Investigations of the effectiveness of an agent for reduction of hygric swelling and comparation of different modified mineral and silica-bounded injection mortars for the tower of the church of Bistriţa (RO) Back
Language: Original   -   Translation
Abstract: The tower of the church of Bistriţa (RO) is one of the most important medieval buildings of Transylvania. The building material which consists of a fine-grained volcanic tuff is severely deteriorated and shows on the surface large cracks and scales. Preliminary scientifically examinations concerning the stone and its special situation on the object are fundamental for evaluation of circumstances of damage. They also serve as a foundation for the effectiveness of conservation treatments. On one hand an agent for reduction of hygric swelling and his effect to the stone is tested. Another part of the paper deals with different modifications of mineral and silica gel bounded injections mortars for the application on scales and cracks. The hygrical and mechanical properties of them are examined. Application of modified microcement-based injection mortars seems to be successful especially for closing large zones behind scales.


Keywords: volcanic tuff, zeolites, reduction of hygric swelling, injection, Syton X 30, Calxnova, microcement, Ledan D1
  • academic institution: Fachhochschule Potsdam
  • kind of theses:  Diplomarbeit
  • main Tutor:  Prof. G. Hauff
  • assistant Tutor:  Dr. B. Arnold
  • date:  2008
  • Language:  German
  • pages:  110
  • pictures:  62

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