Old 05-22-2013, 04:08 PM
Join Date: Sep 2012
Location: Upstate NY
Posts: 8
Default How much vermiculite/cement mixture?

My stand is now complete with 3.5 inches of Sakrete 5000psi concrete with 1/2 inch steel rebar as support. Now I need to add 6 inches of vermiculite/cement as insulation for a 3.5ft by 3.5 top. I think 6 inches is enough?? How much materials do I need to get? How many bags of portland cement and how many bags of vermiculite? Does this insulation top need rebar or just mesh or nothing? Thanks
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Old 05-22-2013, 08:17 PM
david s's Avatar
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Join Date: Mar 2007
Location: Townsville, Nth Queensland,Australia
Posts: 5,162
Default Re: How much vermiculite/cement mixture?

For a 5:1 vermiculite, cement mix(by volume) add 20% extra vermicrete because there is some loss on mixing.
Volume= length x breadth x height

Mesh or rebar not recommended.

Last edited by david s; 05-22-2013 at 08:25 PM.
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