concrete question


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Old 12-04-14, 02:11 PM
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concrete question

I had a question on conditions before pouring concrete piers,with rebar/gravel.They will be 2 ft in ground 8 inches around .We have had a week of much rain,no sun, and the holes were already dug a little rain in them im sure.,We will get a heavy batch the day before i wanted to have these done and i covered them some but am not sure if the extra moist week/rain and no sun will effect the cure/set /strength..its clay soil and temps 40-50 .I can wait if that would impact it but wasnt sure.
Thanks
 
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Old 12-04-14, 03:52 PM
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It doesn't get much better than that.
 
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Old 12-04-14, 10:13 PM
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Ideal curing conditions for concrete include adequate moisture being present, in order for hydration of Portland cement particles to take place. Hydration is what gives concrete its strength and durability, not "drying out" as many people (incorrectly) think. It's best to make an effort to remove any watery soup and mud slurry from the bottom of the holes before pouring concrete in them--it will dilute and weaken the soft concrete at the bottom, rendering it close to useless.

An interesting fact is that concrete never completely stops hydrating if it's exposed to moisture. Meaning concrete that's 60 years old will be (slightly) stronger than concrete that's only 50 years old, if cured under identical conditions.
 
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Old 12-05-14, 06:58 AM
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will be some extreme heavy stuff the entire nite into morning before .im sure soil can be too saturated and holes have been open for a while .. im going to hold off since i saw the extreme amount we are getting the whole night into morning.. have had too much for 1 week..
thanks for the info
 
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Old 12-06-14, 05:01 PM
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Is good that i didnt - light flooding so the holes were filled to the tops..and surrounding area..
now that we wont have anymore all week should i just wait till they are dry again then pour ..since a moist ground can help?
 
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Old 12-08-14, 07:45 AM
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Because you have clay ground, I would pump out the holes with a small pool pump and thoroughly clean the bottom of the holes. let stand one day and make no more water is flowing into the holes. If not pore away.
 
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Old 12-10-14, 02:14 AM
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yeah, DRY holes,,, otherwise mud @ btm will compromise soil's needed strength to support conc & whatever its holding up put 4" of crushed stone in the btm & tamp it down well - whatever you do, NO STANDING WTR good luck !
 
 

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