Creep Properties of Kerto-Laminated-Veneer-Lumber

摘要

The comparison of the effect of moisture content on the creep properties of Kerto-Laminated-Veneer-Lumber (LVL) compared to spruce revealed several notable differences. The creep rate of LVL in bending is strongly dependent on the level of moisture content, giving higher creep in high moisture content levels than spruce, although it is not as high as for spruce. In tension the creep of LVL is very similar to spruce in a cycling moisture condition, but at a steady high moisture content LVL seems more affected. In compression, however, the creep of LVL is not as affected by high moisture contents or varying moisture content as spruce. A creep equation based on the power-law was defined to be used in constant humidity conditions and hydroviscoelastic-constants were defined to quantify mechano-sorptive creep in the bending, tension and compression loading modes.