Search String: Display: Description: Sort:

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TowerTalk\]\s+re\;\s+exploding\s+concrete\s*$/: 8 ]

Total 8 documents matching your query.

1. [TowerTalk] re; exploding concrete (score: 1)
Author: Greenacres113@aol.com
Date: Sat, 15 Sep 2007 07:41:32 EDT
I believe it's entirely possible. When you are a novice learning arc welding & gas cutting the first lesson is to place the metal properly. If you weld or burn on concrete you can super heat the trap
/archives//html/Towertalk/2007-09/msg00514.html (7,072 bytes)

2. Re: [TowerTalk] re; exploding concrete (score: 1)
Author: Jim Lux <jimlux@earthlink.net>
Date: Sat, 15 Sep 2007 07:41:17 -0700
I don't think so.. Yes, it explodes or spalls, but the explanation is wrong. It's the thermal stresses (like pouring water on non-pyrex type hot glass). And, as Hank Lonberg pointed out, in well cons
/archives//html/Towertalk/2007-09/msg00520.html (7,392 bytes)

3. Re: [TowerTalk] re; exploding concrete (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Sat, 15 Sep 2007 12:50:56 -0400
He is not talking about gaps. The water used to form concrete is absorbed by the cement and turns into a crystaline structure. It is that structure that is conductive to some degree that is affected
/archives//html/Towertalk/2007-09/msg00534.html (11,185 bytes)

4. Re: [TowerTalk] re; exploding concrete (score: 1)
Author: Jim Lux <jimlux@earthlink.net>
Date: Sat, 15 Sep 2007 14:34:17 -0700
Indeed.. but water molecules that have been dissociated from the concrete being heated ( a process that I believe is negligible in a lightning heating context) or are just there because the concrete
/archives//html/Towertalk/2007-09/msg00535.html (11,282 bytes)

5. Re: [TowerTalk] re; exploding concrete (score: 1)
Author: Jim Lux <jimlux@earthlink.net>
Date: Sat, 15 Sep 2007 17:16:11 -0700
Except that if you calculate the temperature rise in a copper or steel rod/wire, with the kinds of currents known to exist in a lightning stroke, it's not all that much. It just doesn't get that hot.
/archives//html/Towertalk/2007-09/msg00541.html (11,948 bytes)

6. Re: [TowerTalk] re; exploding concrete (score: 1)
Author: Jim Lux <jimlux@earthlink.net>
Date: Sat, 15 Sep 2007 17:38:46 -0700
It would be interesting to think of an experiment that would provide useful information. Generating high current impulses is pretty straightforward (at least for folks who have HV pulse power equipm
/archives//html/Towertalk/2007-09/msg00542.html (8,402 bytes)

7. Re: [TowerTalk] re; exploding concrete (score: 1)
Author: "Gene Smar" <ersmar@verizon.net>
Date: Sat, 15 Sep 2007 21:10:58 -0400
-- Original Message -- From: "Jim Lux" <jimlux@earthlink.net> To: "jeremy-ca" <km1h@jeremy.mv.com> Cc: "David Gilbert" <xdavid@cis-broadband.com>; "N7DF" <n7df@yahoo.com>; <towertalk@contesting.com>;
/archives//html/Towertalk/2007-09/msg00543.html (10,037 bytes)

8. Re: [TowerTalk] re; exploding concrete (score: 1)
Author: "Jim Chaggaris" <jimc@pwrone.com>
Date: Sat, 15 Sep 2007 20:18:44 -0500
Oh God Gene! Don't use the Prolec website as a reference for any transformer of quality. They fail all the time... 73. Jim N9WW James Chaggaris President PowerOne Corp. 1020 Cedar Avenue Suite 110 St
/archives//html/Towertalk/2007-09/msg00544.html (10,556 bytes)


This search system is powered by Namazu