![]() Control groups were evaluated for each study parameter and duplicate specimens were prepared and tested for each of the study parameters. The testing regime used in this research to evaluate watertightness and bond performance incorporated three parameters: three waterproofing membranes, two wood preservative treatments, and two environmental degradation conditions induced by temperature cycling in a moisture saturated condition. The second system consists of a treated wood deck overlaid with a base course of bituminous concrete, a waterproofing membrane, and a bituminous concrete wearing surface. The existing system, consistent with current timber bridge construction practice, uses a preformed waterproofing membrane placed on a preservative treated wood deck overlaid with a bituminous concrete wearing surface. Two different asphalt concrete systems were examined in this research study. ![]() Title INVESTIGATION OF BOND STRENGTH AND WATERTIGHTNESS OF ASPHALT CONCRETE WEARING SURFACES FOR TIMBER BRIDGE DECKS ![]()
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