EFFECT OF HEAT TREATMENT ON COMPRESIVE AND TENSILE STRENGTH OF ENDTO EDGE BUTT JOINT

摘要

The effect of heat treatment on the compressive and tensile strength of end to edge butt joint is analysed in this work. The joints were prepared from both untreated and heat-treated ash (Fraxinus excelsior) wood. The end to edge butt joint made of heat-treated wood has a lower resistance both for compression and tensile strength, compared with joints made of untreated wood. The length of dowel has a bigger influence on compressive and tensile strength of joints than the distance between dowels and the ratio of dowel penetration in the main part of joint. An optimal solution to place the dowels is suggested both for the joints made of heat-treated wood and joints made of untreated wood.