Читать книгу Monument Future - Siegfried Siegesmund - Страница 406

Diagnostic investigations, desalination, consolidation and restoration have been applied and carried out on three historical tombstones at the Bartholomew Cemetery in Goettingen (Germany).

The tombstones were investigated by electrical capacity, electrical conductivity with and without testpads, ultrasonic velocity and surface hardness. The method for desalination applied in this study is desalination by capillary flow combined with poultices. The salt content within the poultices was measured by electrical conductivity on poultice material taken in the grid from the stone surface. Furthermore, the stone material of the three tombstones was investigated by porosity, density and hydric dilatation.

Follow-up examinations made it clear that a proof of in situ consolidation is possible. A clear relation to the weatherability due to salts and the degree of alteration as well as the possible development of clay minerals could be determined.