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RE: Gunite in High Temperature Application[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: "'seaint(--nospam--at)seaint.org'" <seaint(--nospam--at)seaint.org>
- Subject: RE: Gunite in High Temperature Application
- From: Harold Sprague <harold.sprague(--nospam--at)neenan.com>
- Date: Wed, 20 Oct 1999 10:56:18 -0600
Gunite can (but may not) be the equivalent of cast in place concrete. The quality of a gunite (shotcrete) wall is highly dependent on the nozzleman. Have the guy do a test panel. Then cut up and test the test panel. I would also look at the USACE specification section 3371 on shotcrete. http://energy.designcommunity.com/e-design.html Regards, Harold Sprague The Neenan Company -----Original Message----- From: Fountain Conner [mailto:fconner(--nospam--at)pcola.gulf.net] Sent: Tuesday, October 19, 1999 3:24 PM To: seaint(--nospam--at)seaint.org; owner-structx(--nospam--at)mLists.net Subject: Gunite in High Temperature Application Importance: High I'm up against the wall here -- A 40 year-old concrete sump in hot water service (large chemical plant) has finally sprung a couple leaks. Fortunately the water is treated to be slightly basic, rather than acid. Concrete cover on the rebar has vanished, and the rebar is exposed. There is slight rust, but there doesn't seem to be any significant material lost. Of course, we're cleaning everything up before beginning repairs. The concrete contractor says he can cap the inside of the walls (nearly 4 inches) back to the original wall profile by Sunday night. We can get gunite completed by Thursday evening. Question -- Can I expect the equivalent of a 5000 psi, 28 day conventional concrete with gunite from a local swimming pool contractor (the only man in the area who can do the job). If so, those 3 days are worth a lot of money. 'Will appreciate any guidance and counsel. We will make this decision tomorrow. Fountain E. Conner, P.E. 1724 Beaver Pond Rd. Gulf Breeze, Fl. 32561 Phone 850-932-5547 Fax 850-934-1916
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