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|Date||July 26, 2013|
We conducted the epoxy anchor testing in the report using HILTI HIT - RE 500 SD epoxy. This material has a bond strength of 1800 psi. All of the anchor capacities that we calculate or tested in the report are based on that bond strength number. Thus, we it would be reasonable to assume that higher bond strength materials should provide equivalent or better anchorage.
Bond strength is not the only factor. Concrete strength plays a role as well. The compressive strength of the concrete used in these component tests may be higher than the typical strength of concrete bridge decks. Thus, some decrease in the capacity of the anchors would be expected for lower strength concrete. This decrease in strength would likely be offset to some extent by the presence of reinforcing steel in the bridge deck.
|Date||September 12, 2013|
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