What cause concrete slab to crack?
when you salt them in the winter. lone salt pavement. use calcium on concrete... or a jackhammer
There are a hundred reasons why a slab can crack, one of which can be expansion, another is dearth of control joints ( the lines you see in sidewalks and stuff) drought of expansion joints( the really thick lines you see in a sidewalk) absence of compaction of the soil underneath, water intrusion under the slab wash the soil away that supports the slab, placing a heavy weight on the slab that it wasn't designed for close to a big truck parking on a side walk designed for people to saunter on, and the list goes on and on inferior concrete want of reinforcement etc. are you getting the idea? Anyone answering this question desires more information Concrete slab is supposed to develop hairline cracks over time; it's when the cracks are large that there's a problem. If the slab was poured and no rebar or rope mesh used within it, you'll have chief problems. Our neighbor's driveway didn't get wire mesh laid down and they've get huge chunks broken off and another large nouns wanting to give way; adjectives it'll take is for some dirt to wash out. This happen when a delivery truck drove on their driveway. A house slab can have structural problems for indistinguishable reason, as well as self caused by soil instability.
Answers: heat expansion
concrete is stout, and if not supported, can crack under its own counterbalance, a tree root may lift it up and break it, or the soil under may purify away FROM THE LOOKS OF IT YOU HAVE THE BEST ANSWERS ALREADY
THE ONLY ONE I HAVE IS SOMETHING WASN'T DONE RIGHT BEFORE IT WAS POURED
There are many reason a concrete slab will crack. 1 Tree roots crack driveways all the time. 2. If the cement dries to quickly it can crack. The longer cement cures the stronger it is. #. The revise from hot to cold in the seasons bring concrete to expand and contract which can cause concrete to crack as well. that's why you hold the seperations in a sidewalk to help prevent this from going on. Concrete slabs crack because the expanding and contracting. They expand and contract due to heat changes. They expand when it is hot and contract when it is cold.