ALKALI SILICA REACTIVITY

[JBASE]

We have an elevated tennis court, 6 years old, constructed of 2" metal deck with 4" total thickness of concrete. There is severe ASR finish damage. We want to resurface the concrete by removing +/-1 inch of concrete and replacing with a fully bonded concrete finish. Our concern is the ASR will remain in the original concrete and bond to the new concrete, temporarily. Between the micro cracking damage caused by the concrete removal and the fact that this is an exterior deck, we believe the ASR will continue to react and create additional damage after resurfacing. Our second choice is to remove the concrete and metal deck and begin from scratch. The concrete fill is non-structural as the metal deck meets vertical and lateral requirements as a bare deck. Has anyone been faced with resurfacing over ASR contaminated concrete and if so, was it successful?

 

[hokie66]

Since this is your first post since joining Eng-Tips, you may not have noticed that there are technical forums which would be appropriate for this question. This is one of the "soft" forums, not dedicated to technical discussions. I think you should examine the list of forums, then pick an appropriate one. Don't post in more than one place.

 

[cvg]

suggest

http://www.eng-tips.com/threadminder.cfm?pid=595