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ICF372User is Offline
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Posts:219





12/15/2001 7:58 PM  
I've heard many stories about icf pours that take 4 and 5 hours for average size basements. Personaly I've never had a pour that took over 2 hours,even with gable ends. Our last pour was a 6" formtech basement 8' tall . 31' x67' and a walk out. we used a convayor( does anyone perfer convayors? ) to pour . These things are messey and wild. That job took 1.5 hours to pour in september.
We poured 6 bag peastone 4 1/2" slump in 2 lifts and viberated. What about now with much colder temps.? Should we slow down the pour time? Or use a 3ed lift?
Always checking Myself.
Eldon Howe

Eldon Howe
Howe Construction

Total Concrete Homes provide positive cash flow , DAY ONE .
James EggertUser is Offline
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Posts:1001




12/16/2001 5:43 PM  
Eldon
Do you own your own conveyor? When you say wild and messy, does this leave you with such as mess as to make someone wonder if you don't know what you are doing or this may be your first pour? Is there such a mess left over that your clean-up crew spends more hours than its worth? No offense intended but I have not used a conveyor, so I only wonder if saving a few hundred bucks is worth using it? I prefer a pump, even though it may be a small pour, but on the second story!!

Take Care

Jim

Take Care
Jim

Design/Build/Consulting
"Not So Big" Design Proponent
markrossUser is Offline
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Posts:1035




12/16/2001 10:01 PM  
Nice thing about not using plasticizer is that the concrete does not adhere as effectively to the outside and top of the block, if the next day you go in and simply take a 2x4, use it like an eraser, and simply clean the forms off, prior to complete set, then the wall cleans off perfectly clean. Also if you fill the top block connectors with concrete, a simply tapping within a few hours will effectively remove all of the concrete from the grooves, nooks and crannies. Which takes one man about one hour on a typical basement. Eldon knows exactly what he is doing, Plasticiser is a bad thing, but no-one believes me, thicker pours are very possible, and if set is a concern add a retarder, plasticier turns concrete into a sticky substance, and the portland will adhere to the foam forms, we cannot spray a release agent on the foam, so its a fact, if you doubt, I will give you names and numbers of people experienced in this type of pouring, which have doubted it until they saw it.

Reasons to not use plasticizer:

1. Prevent gravelling at bottom of wall.
2. Increase the concrete’s reaction to internal vibration, making it more aggressive over a wider effective area.
3. Cleans up much easier.
4. Plasticizer adds to the cost of the concrete, not the placement.
5. Reduces pressure on the forms, helping to eliminate bulging, blowouts and form deformation.
6. reduces the need for sealing perfectly tight with foam around openings, as the only product leached is water.
7. Allows us to drop the concrete a further distance with less problems associated with segregation.

To start, names and numbers, again are available of past disbeliveers....

Eldon, you keep going, I already know your work, your excellent reputation, knowledge and ability which few are capable of matching.


Mark Ross
"Le Canuck"
ICF372User is Offline
Registered Users

Posts:219





12/17/2001 6:13 AM  
No I don't own a conveyor. I've only used one a couple times, But I was working for the conveyors owner. Good guess Jim. Just wondering what others thoughts were. But what about fast pours? I've gone to certification courses, have many manuals, even the perscriptive method. But my pours just go much faster. I have had very few blow out over the years, and almost no concrete left over at the end of the pour , so the wall is full of the stuff.Am I asking for trouble by pouring fast in the winter? How long does it take you guys to pump a wall in the winter . Say a 30' x 60'.
Eldon Howe

Eldon Howe
Howe Construction

Total Concrete Homes provide positive cash flow , DAY ONE .
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