4000sposse Posted January 31, 2014 Report Share Posted January 31, 2014 This looked strange to me, this concrete failed in two relatively small spots at the surface, and has some cracking connecting the spalled/broken concrete. This driveway has radiant heat, I suspect a connection between the radiant heat and this broken concrete. Anyone seen what causes this? Click to Enlarge 25.05 KB Quote Link to comment Share on other sites More sharing options...
mjr6550 Posted January 31, 2014 Report Share Posted January 31, 2014 This looked strange to me, this concrete failed in two relatively small spots at the surface, and has some cracking connecting the spalled/broken concrete. This driveway has radiant heat, I suspect a connection between the radiant heat and this broken concrete. Anyone seen what causes this? Click to Enlarge 25.05 KB I noticed that cracks converge at those two spots. This could be caused by shrinkage or expansion if the concrete was poured tight to an object like a pipe manifold, large stone or old broken piece of concrete, etc. Quote Link to comment Share on other sites More sharing options...
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