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Posted: 1/28/2014 5:44:12 AM EDT
[#1]
I wouldn't try it.
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Posted: 1/28/2014 5:45:38 AM EDT
[#2]
Quote HistoryQuoted: I wouldn't try it. |
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Posted: 1/28/2014 5:46:04 AM EDT
[#3]
Should be 45 degrees and rising. I wouldn't pour unless your life depended upon it. And even then I would cover it with a heavy tarpaulin as soon as you were sure the surface wouldn't be damaged beyond acceptable levels.
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Posted: 1/28/2014 5:49:52 AM EDT
[#4]
pour = problems down the road
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Posted: 1/28/2014 5:50:47 AM EDT
[#5]
You are just going to make more work for yourself.
You shouldn't pour over frozen ground, it is expanded because of the ice crystals. Come spring that sucker will settle back down and no longer be level. You could dig down 40 inches and fill the entire hole with washed stone and compact it, but that would be a bastard. Everything is frozen solid here too, I built these steps last month, under them is an 8 ft hole all the way to virgin soil and filled with clean stone right to the top, then a pinned conrete footer. 
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Posted: 1/28/2014 5:51:31 AM EDT
[#6]
After ground thaws youll wonder why you did it
If it isnt pressing, wait until warmer weather |
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Posted: 1/28/2014 5:52:59 AM EDT
[#7]
Absolutely not. I've been in the ready-mix business for years. You're asking for trouble
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Posted: 1/28/2014 6:05:29 AM EDT
[#8]
Even if this pad just has to support counter space like in the pic?
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Posted: 1/28/2014 6:08:56 AM EDT
[#9]
Yeah..."pizza oven."
Your quickcrete B2 Bomber is going to be a miserable failure. |
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Posted: 1/28/2014 6:10:09 AM EDT
[#10]
Quote HistoryQuoted:
Even if this pad just has to support counter space like in the pic? Is the ground truly frozen solid? If it is then it is going to move when it thaws. There is a reason they make massive diesel powered ground defrosters for commercial work, building over frozen ground is just asking for trouble. |
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Posted: 1/28/2014 6:13:51 AM EDT
[#11]
Quote HistoryQuoted:
Is the ground truly frozen solid? If it is then it is going to move when it thaws. There is a reason they make massive diesel powered ground defrosters for commercial work, building over frozen ground is just asking for trouble. Quote HistoryQuoted:
Quoted:
Even if this pad just has to support counter space like in the pic? Is the ground truly frozen solid? If it is then it is going to move when it thaws. There is a reason they make massive diesel powered ground defrosters for commercial work, building over frozen ground is just asking for trouble. No I wouldn't say the ground is frozen like ice and snow, but it is probably at a freezing temp. We are in the desert, there really is no water in the soil to speak of. I can go out there an grab a handful of dirt and sprinkle it like sand. I don't think I have an issue with heaving. There was a pile of sand where the main corner area was that I did break apart with a pick because the mound was frozen some, but it was also left over quikrete for the wall footers so I couldn't answer whether it was actually frozen or some spots just had cement mixed in. The reason I am still considering it is because my work schedule doesn't allow me to pick a week. I work away from home and only have certain times I can do this stuff. (I already bought the bags too )
I have a propane tank and could borrow a little propane heater to put under a tarp towards the evening if it would help. |
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Posted: 1/28/2014 6:13:52 AM EDT
[#12]
When you say quickcrete, do you mean the pre-mixed stuff from home depot, lowes, et al?
I hope not.  Shitty aggregate, low cement ratio, no air entrainment. If you do go that way, consider adding some extra cement and some dish soap. Also, some mesh will help prevent cracks.
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Posted: 1/28/2014 6:14:35 AM EDT
[#13]
Quote HistoryQuoted:
When you say quickcrete, do you mean the pre-mixed stuff from home depot, lowes, et al? I hope not. Shitty aggregate, low cement ratio, no air entrainment. If you do go that way, consider adding some extra cement and some dish soap. Also, some mesh will help prevent cracks.It's fine for footers. |
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Posted: 1/28/2014 6:16:08 AM EDT
[#14]
Quote HistoryQuoted:
No I wouldn't say the ground is frozen like ice and snow, but it is probably at a freezing temp. We are in the desert, there really is no water in the soil to speak of. I can go out there an grab a handful of dirt and sprinkle it like sand. I don't think I have an issue with heaving. The reason I am still considering it is because my work schedule doesn't allow me to pick a week. I work away from home and only have certain times I can do this stuff. I have a propane tank and could borrow a little propane heater to put under a tarp towards the evening if it would help. Quote HistoryQuoted:
Quoted:
Quoted:
Even if this pad just has to support counter space like in the pic? Is the ground truly frozen solid? If it is then it is going to move when it thaws. There is a reason they make massive diesel powered ground defrosters for commercial work, building over frozen ground is just asking for trouble. No I wouldn't say the ground is frozen like ice and snow, but it is probably at a freezing temp. We are in the desert, there really is no water in the soil to speak of. I can go out there an grab a handful of dirt and sprinkle it like sand. I don't think I have an issue with heaving. The reason I am still considering it is because my work schedule doesn't allow me to pick a week. I work away from home and only have certain times I can do this stuff. I have a propane tank and could borrow a little propane heater to put under a tarp towards the evening if it would help. Mix it with hot water then, and throw a piece of plastic over it and some straw, dirt, blankets, whatever you have to insulate with. I use a heat blanket and rolled foam often. |
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Posted: 1/28/2014 4:12:14 PM EDT
[#15]
Well I went for it.
We had some old comforters and a bunch of cardboard boxes that I covered it with. I guess the worst that can happen is it completely fails  . But I am not really sure how I would know.
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Posted: 1/28/2014 4:17:58 PM EDT
[#16]
Thaw ground. Mix with hot water and keep covered
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Posted: 1/28/2014 4:21:48 PM EDT
[#17]
Quote HistoryQuoted:
Quote HistoryQuoted:
Quoted:
I wouldn't try it. Same |
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Posted: 1/28/2014 4:29:51 PM EDT
[#18]
Quote HistoryQuoted:
Mix it with hot water then, and throw a piece of plastic over it and some straw, dirt, blankets, whatever you have to insulate with. I use a heat blanket and rolled foam often. Quote HistoryQuoted:
Quoted:
Quoted:
Quoted:
Even if this pad just has to support counter space like in the pic? Is the ground truly frozen solid? If it is then it is going to move when it thaws. There is a reason they make massive diesel powered ground defrosters for commercial work, building over frozen ground is just asking for trouble. No I wouldn't say the ground is frozen like ice and snow, but it is probably at a freezing temp. We are in the desert, there really is no water in the soil to speak of. I can go out there an grab a handful of dirt and sprinkle it like sand. I don't think I have an issue with heaving. The reason I am still considering it is because my work schedule doesn't allow me to pick a week. I work away from home and only have certain times I can do this stuff. I have a propane tank and could borrow a little propane heater to put under a tarp towards the evening if it would help. Mix it with hot water then, and throw a piece of plastic over it and some straw, dirt, blankets, whatever you have to insulate with. I use a heat blanket and rolled foam often. The process is exothermic. What point would there be in using hot water? If you need hot water, you ought not be doing it. If the exothermic reaction isn't enough, you ought not to be pouring. Your only acceptable problem regarding temps would be the need to add ice to the mix to slow the reaction. This is done all the time on big pours, especially bridge columns in very hot, humid regions. |
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Posted: 1/28/2014 4:34:13 PM EDT
[#19]
There's an admixture called Polarset that helps concrete set down to 20 degrees. Fairly inexpensive too. I think we pay about $8 per yard, of course that's in bulk.
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Posted: 1/28/2014 4:48:54 PM EDT
[#20]
Quote HistoryQuoted:
The process is exothermic. What point would there be in using hot water? If you need hot water, you ought not be doing it. If the exothermic reaction isn't enough, you ought not to be pouring. Your only acceptable problem regarding temps would be the need to add ice to the mix to slow the reaction. This is done all the time on big pours, especially bridge columns in very hot, humid regions. We use hot water up here all the time on iffy days, speeds the set time up so you can actually get a finish on it and get it insulated before night time. I have been mixing my mortar all winter with 150 degree water, takes an initial set in about half the time and coupled with the heaters actually stays above freezing for the first two days. It was his call, he knows the soil in his area better than I do. I know up here it is mostly clay and loam, not a chance of pouring a slab once we get a hard freeze, at least not within the budgets I am used to dealing with. |
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Posted: 1/28/2014 4:58:26 PM EDT
[#21]
I painted my shed on an "iffy" day.
Now I'm enjoying the sight of peeling paint |
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