Effect of Wet-Dry Cycles on Compressive Strength and Impact Properties of New Softwood Pallets

Siripong Malasri, Mallory Harvey, Robert Moats, James Aflaki, Ali Pourhashemi, Griselda Matos Martinez, Patrick Held, (doi: 10.23953/cloud.ijapt.2)

Abstract


Wood pallets are often put in circulation for several years. In a pallet’s lifetime it goes through several wet-dry cycles. In this study, softwood pallet specimens were compressed statically and impacted at different water contents through an accelerated drying process for three repeated wet-dry cycles. A static compressive strength test was performed along the grain of pallet stringers to avoid the effect of loadings in different grain directions. Instead of using the standard drop test from a drop tester, an incline impact test was performed to obtain more consistent impact accelerations. Impact data was recorded by a shock recorder to simplify the set up for the experiment. This study has found that there is no significant effect of the wet-dry cycles on static compressive strength and impact acceleration.

Keywords


Mechanical Properties; Softwood Wooden Pallets; Wet-dry Cycles; Static Compressive Strength; Impact Accelerations

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