#1  
Old 06-13-2006, 12:47 AM
Serf
 
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Default ? on ratio of vermiculite to cement

is the ratio volume or #?
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Old 06-13-2006, 02:48 AM
CanuckJim's Avatar
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Location: Prince Albert, Ontario, Canada
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Default Ratio

I use a standard ratio of six vermiculite to one Portland by volume. It's not a critical mix, but it's good to get close. Do it by shovelfuls, pails, what have you.

Jim
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Old 12-03-2013, 08:09 AM
Serf
 
Join Date: Nov 2013
Location: topsfield, ma
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Default Re: ? on ratio of vermiculite to cement

Ratios by volume!!
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Old 12-03-2013, 06:03 PM
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Default Re: ? on ratio of vermiculite to cement

I did 8:1 under the dome, probably could've done 10:1 really, definitely by volume.
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Old 12-06-2013, 03:22 AM
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Default Re: ? on ratio of vermiculite to cement

Under the floor you need the strength. Should be around 5:1. Over the dome go as lean as you dare. I use 10:1
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