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Question about my deck foundation - poured concrete footings in November and now they're cracking

Poured 6 footings for a 12x16 deck back in early November here in Ohio. Temps were around 40 degrees that day. Covered them with tarps like I read online. Checked them yesterday and there's hairline cracks running through 3 of them. Is this just from freeze-thaw or did I mess up the mix ratio?
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2 Comments
dianal94
dianal9426d ago
Honestly, I used to think tarps would fix everything no matter what, but that point about pouring onto unfrozen ground changed my mind. If the ground underneath was still cold or had any frost in it, that alone could cause uneven settling and those hairline cracks. So yeah, the mix might be fine but the ground temp could be the real problem here.
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the_tara
the_tara27d ago
Check if they poured directly onto unfrozen ground. That causes cracks too.
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