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1. [TowerTalk] Concrete with air. (score: 1)
Author: "J.G.Castellano" <caste@sympatico.ca>
Date: Tue, 9 Oct 2007 23:17:29 -0400
Hello, I am installing a Trylon tower and the foundation drawing calls for 3,000PSI concrete (20MPa), when I explained what I was doing one of the concrete companies recommended 25Mpa with air. Can s
/archives//html/Towertalk/2007-10/msg00215.html (6,752 bytes)

2. Re: [TowerTalk] Concrete with air. (score: 1)
Author: "J.G.Castellano" <caste@sympatico.ca>
Date: Fri, 26 Oct 2007 01:19:31 -0400
Thanks Kelly and Hank for your replies. 73, Julio VE3FH Julio: What they are suggesting is higher strength concrete 25Mpa which is about 3600 psi. The air is air entrainment. 5% is the value you shou
/archives//html/Towertalk/2007-10/msg00709.html (8,313 bytes)

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