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EN
A programme of student conservation training courses for students was set into motion as part of long-term cooperation between the Academy of Fine Arts in Warsaw and the Social Committee of Care for Old Powązki. In the May-July summer seasons in 1996-1999 students of the Chair of Conservation and Restoration of Stone Sculpture and Architectural Elements, together with assistant professors, conducted work encompassed in a programme of a secondary conservation of gravestones, conserved in a complex manner more than ten years ago. It was discovered that with a relatively low output of labour and financial funds the aesthetic values of the gravestones can be restored rather quickly. A further observation concerned the disappearance of the effects of water repellents, which apparently affected only the surface. In the case of porous stones, some 1,5 cm. from the “epidermis”, the effectiveness of the earlier applied preparations remained unchanged or was altered to an only slight degree. Studies on protective coatings in reference to concrete examples, supported by an analysis of archival material, made it possible to examine problems connected with the degradation of the preparations applied in the course of the original treatments. Furthermore, they also rendered it feasible to define the effects of the erosion of the protected matter in an imposed course (subjected to the erosion of chemical preparations).
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