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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: <ve4xt@mts.net>; Date: Wed, 10 Oct 2007 9:19:42 -0500; Hi Julio, http://www.cement.org/basics/concretebasics_airentrained.asp 73, kelly ve4xt 3,000PSI concrete explain what is the _______________________________________________ __________________________; /archives//html/Towertalk/2007-10/msg00216.html (7,533 bytes)
3. Re: [TowerTalk] Concrete with air. (score: 1): Author: kr7x@comcast.net; Date: Wed, 10 Oct 2007 15:18:12 +0000; 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 should look for. This will improve the conrete's durability; /archives//html/Towertalk/2007-10/msg00217.html (7,939 bytes)
4. 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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