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Thanks for the updates and detailed information!
It's odd that my personal testing has moved away (temporarily) from the epoxies to the preparation methods. I've had failures that I don't think should have happened. I can't tap anything with a hammer like Tracy!
So what's the difference. The type and condition of the steel is one. Plus how the steel is cleaned prior to use.
I won't be suprised if we end up with something like steel. You know how we tell people, "Heattreating has more to do with performance than steel choice". Well I think we might end up with, "How you prepare the materials is more important than the epoxy choice" (Of course that's not the whole story, but it doesn't matter how good an epoxy you use is, if your steel is oily when you put it on.)
BTW In another test I found most epoxies shrink on curing. IF you have large gaps under your slabs, the epoxy will actually pull away from the steel as it cures! JB Weld, acraglas, we the only epoxies I tried that didn't. Gorilla glue and U-05fl both expand. Something to think about!
Steve
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