Restoration of Destructive Wood in Supporting Zones of Wooden Beams: Fid-Bau Portal

Restoration of Destructive Wood in Supporting Zones of Wooden Beams

Gribanov, Aleksey / Glebova, Tatyana / Roschina, Svetlana

High requirements for preserving architectural appearance of building elements and structures of historical and cultural value impose serious restrictions on restoring bearing capacity methods of acting constructs and preventing their failure, thus, updating new researches in this area. Most common defects for structural elements are biological damage to supporting zones of coating and floor beam structures. Use of polymer composition impregnation in destructive beam zones allows restoring physicomechanical properties of wood and preserving architectural structure appearance as whole. The aim of the study is to assess the possibility of restoring destructive wood by impregnating polymer compositions filled with carbon materials. To achieve this goal, the tasks of determining the strength of the restored wood to collapse and chipping along the fibers and comparing the results with indicators for healthy wood have been solved. The paper presents technique for impregnating a polymer composition to restore bearing capacity of supporting wood zones influenced by destruction. This work presents results of X-ray tomography of reconstructed samples with wood destruction; technique of testing samples for crushing and shearing along the fibers; dependences of “stress strain”. An increase in strength of reconstructed wooden specimens during crushing along the fibers was found to be 77%, compared with samples from destructive wood, and 83% when chipping. The conclusion presents main test results, comparison between previous works and determines the scope of presented method.