I mostly hear about this happening for roads on very hot days, but I'm wondering what about the heat causes the concrete to heave? Is there any concerns for foundations/garage floors/drive way heaving for the same reason? If so, what can I do to protect them?
heat causes it to expand. If there's no room to expand, it buckles. It's usually a bigger issue for blacktop, as it's darker and absorbs more heat. I doubt your house foundation or driveway has enough exposed mass for this to be of any concern, though...you typically need highway amounts of surface to cause the buckling