I am replacing a section of fence that blew down in a recent wind storm. After I set the fence poll in mortar the temperatures dropped below freezing and one day later the mortar has not set. Will it set eventually or do I need to start all over when the weather warms up?
2006-12-29 06:22:16 · 9 answers · asked by Chris 1 in Home & Garden ➔ Maintenance & Repairs
Mortor probally wasnt the best choice of mixes to use. Concrete mix would be a better choice but were not here to discuss that. Concrete hardens due to a chemical reaction. As it hydrates it hardens. You can pour concrete in water and yes it will set up. But if concrete freezes before it cures it looses its strength. I usually go by 4 inches can hold itself down to 28 degrees at night with out covering but I try to put some polly over it to keep the frost of whenever I can. I would probally re do it in the spring with a concrete mix. We pour concrete all winter long in Minnesota and its alright, the one thing you aren't to do is pour on frost, so that means getting the blankets out and heating up the ground.
2006-12-29 07:13:19 · answer #1 · answered by countryguy140 2 · 0⤊ 0⤋
Start over. Sublimation is the term for why it went wrong, and the reason concrete sets up under water is because of calcium. It's a different mixture, and scenario. Even if it looks like it will work, it will not have any structural stability or strength. Use quickcrete next time. (and mix it with salt water if available lower freezing temp)
2006-12-29 07:08:34 · answer #2 · answered by Anonymous · 0⤊ 0⤋
If it was still a paste when it froze it will set but be weaker because of the pores caused by expansion fromfreezing water. However if you vibrate the concrete when it thaws (eliminating voids) the concrete can reach its full strength. If the concrete freezes after it sets but before it gains significant strength, the expanding water caused irreparable loss of strength. ( from Properties of Concrete by A M Nelville).
Concrete generally ranges from 2,500-4,500 psi, Quickrete is 4,000 psi, type M mortar is 2,500 psi, type S is 1,800 psi, type N is 750 psi. Im sure any of these will be strong enough for a fence post.
2016-11-24 04:55:51 · answer #3 · answered by Benjamin 1 · 0⤊ 0⤋
Start over.
When the water in the mortar freezes the mortar won't set because the water becomes nonexistant. Sorry, dude. It must be frustrating for you.
2006-12-29 06:43:29 · answer #4 · answered by Anonymous · 1⤊ 0⤋
not sure why you set the post in mortar rather than concrete post mix, but the mortar should dry shortly. In the future there are additives that can be applied to concrete mix etc., to make it cure at same speed as if it were warm out.
good luck its frzing here in Oregon too
2006-12-29 06:27:56 · answer #5 · answered by ticketoride04 5 · 1⤊ 1⤋
How do you think they set bridges? ever Wonder what happens to that mortar they put under water.
2006-12-29 06:37:35 · answer #6 · answered by cowboydoc 7 · 0⤊ 0⤋
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2016-12-11 18:29:33 · answer #7 · answered by ? 4 · 0⤊ 0⤋
You're going to have to start over. Same theory as to why they don't pour concrete for streets and sidewalks in the winter. And when it's just starting to get colder out, they add calcium to help heat it up so it will cure.
2006-12-29 06:26:12 · answer #8 · answered by UNI Panther 3 · 0⤊ 0⤋
it will not likely set solid,,will not be too substanchle,,,i sujjest redoing it ....
2006-12-29 06:25:51 · answer #9 · answered by Anonymous · 0⤊ 0⤋