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- To: wai(--nospam--at)euken.com
- Subject: Fwd: Re: Concrete in Salt Water Environment
- From: rlewis(--nospam--at)techteam.org (Richard Lewis)
- Date: 05 Aug 1997 15:34:36 GMT
Rlfong(--nospam--at)aol.com wrote: > It is absolutely astounding to me that on a glorious sunny California day, > so many of us would be reading this newslist and responding so quickly, on > Palm Sunday to boot!!! > > My 2 cents from experience at the Port of Oakland where we had about 20,000 > piles built/maintained is you're on the right track with the (1) lower w/c > 0.4-0.45. use o.4 if possible. (2) higher strength concrete 6000 psi or > greater helps; The combination will help minimize the microcracks for > water/chloride penetration (3) epoxy coated rebar as an additional layer of > defense is still recommended, but only with vigorous inspection. You have > to find the right inspector or R.E. willing to shove the contractor back on > the inevitable nicks and dings on the coating. Otherwise, it is a waste of > money (4) 2.5" cover is minimal. At the Port, we used 3" to provide more > cover to protect the rebar. the additional depth also provides a greater > degree of latitude for construction bloopers. (5) lastly, the sacrifacial > anode is a good alternative / backup to a hard-wired cathode protection. > Just have to remember to replace the metal every couple of years. My 2cents > only. Ron- Thanks for the info. I am really worried about very small nicks that might develop during installation. I know that you can have very high quailty control while the epoxy is being put on the rebar in the plant. But how would an inspector be able to find all the little nicks that could develop during intallation. The Inspector would have to spen hours going over the rebar before each pour. What do they use for tie wire? Obviously they do not use the normal steel wire. Thanks Lynn --- Internet Message Header Follows --- Received: from server1.seaoc.org (bqe.com [18.104.22.168]) by host1.texramp.net (8.8.5/8.8.5) with SMTP id IAA19729 for <rlewis(--nospam--at)techteam.org>; Mon, 24 Mar 1997 08:31:24 -0600 (CST) Received: from beach.silcom.com by server1.seaoc.org (NTList 3.02.10) id ca010662; Mon, 24 Mar 1997 06:21:36 -0800 Received: from lhoward.ten.net by beach.silcom.com (940816.SGI.8.6.9/SMI-4.1) id GAA09940; Mon, 24 Mar 1997 06:18:04 -0800 Message-ID: <33368D75.7078(--nospam--at)silcom.com> Date: Mon, 24 Mar 1997 06:19:33 -0800 From: Lynn Howard <lhoward(--nospam--at)silcom.com> X-Mailer: Mozilla 3.0Gold (Win95; I) MIME-Version: 1.0 To: seaoc(--nospam--at)seaoc.org Subject: Re: Concrete in Salt Water Environment References: <970324005116_-1136059736(--nospam--at)emout08.mail.aol.com> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Reply-To: seaoc(--nospam--at)seaoc.org Error-To: seaoc-ad(--nospam--at)seaoc.org X-Loop: seaoc(--nospam--at)seaoc.org X-Info: [SEAOC] Owner: seaoc-ad(--nospam--at)seaoc.org X-POP3-Rcpt: seaoc-ad(--nospam--at)seaoc.org X-Sender: seaoc-ad(--nospam--at)seaoc.org Precedence: list X-ListMember: rlewis(--nospam--at)techteam.org [seaoc(--nospam--at)seaoc.org] __________________________________________________ Richard Lewis, P.E. Missionary TECH Team rlewis(--nospam--at)techteam.org The service mission like-minded Christian organizations may turn to for technical assistance and know-how.
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