Invention of light weight panel with trade mark of Dendrolight is one of the most distinguished wood industry innovations of last decade. At present three layers cellular wood panels have wide non structural application. The aim of the research is to evaluate the compression properties perpendicular to the plane of the three layer cellular wood panels for structural application. There were 8 specimens manufactured with panel thickness 136 or 152 mm, width and length 300 mm of each of the six horizontal load bearing panel structural models. Scots pine (Pinus sylvestris L.) cellular wood material and solid pine wood ribs were used as internal layer of the structural panels. Cellular wood core was placed in horizontal or vertical direction. Scots pine solid wood panels and birch plywood were used as top layer material. Applied glue was polivinilacetate Cascol 3353. Common stress type in structural subfloor panels is compression therefore the influence of the cellular material orientation, ribs and top layer material on the sandwich type structural panel compression strength was evaluated according to LVS EN 408:2011. Extra parameters like moisture content and apparent density were determined. The initial research shows that different structural models have a great effect on the cellular wood material panel compression strength. Cellular wood panels with vertical direction of cellular wood material show significantly higher compression strength compared with panels with horizontal direction of cellular wood material. Wooden ribs significantly increases compression strength of three layer cellular wood panels. This initial study carried out within project “Elaboration of innovative self supporting panels and building elements made of cellular wood material” and results will be used for further development of structural panels of cellular wood material.
Keywords: light weight panels, cellular wood, compression strength
Authors
Iejavs J.
Wood Processing Department, Forest Faculty, Latvia University of Agriculture and Forest and Wood Product Research and Development Institute, Jelgava, Latvia
Spulle U.
Wood Processing Department, Forest Faculty, Latvia University of Agriculture and Forest and Wood Product Research and Development Institute, Jelgava, Latvia
Jakovlevs V.
Wood Processing Department, Forest Faculty, Latvia University of Agriculture and Forest and Wood Product Research and Development Institute, Jelgava, Latvia
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