Received: from PCH.mit.edu (18.7.21.50) by mail.efplus.com (192.168.0.8) with Microsoft SMTP Server (TLS) id 8.3.485.1; Wed, 26 May 2021 22:04:05 -0700 Received: from PCH.MIT.EDU (localhost.localdomain [127.0.0.1]) by PCH.mit.edu (8.14.7/8.12.8) with ESMTP id 14R4r2GJ011449; Thu, 27 May 2021 00:53:10 -0400 Received: from outgoing-exchange-1.mit.edu (OUTGOING-EXCHANGE-1.MIT.EDU [18.9.28.15]) by PCH.mit.edu (8.14.7/8.12.8) with ESMTP id 14R4r0c2011444 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL) for ; Thu, 27 May 2021 00:53:01 -0400 Received: from oc11exedge2.exchange.mit.edu (OC11EXEDGE2.EXCHANGE.MIT.EDU [18.9.3.18]) by outgoing-exchange-1.mit.edu (8.14.7/8.12.4) with ESMTP id 14R4qxjW025566 for ; Thu, 27 May 2021 00:53:00 -0400 Received: from w92expo19.exchange.mit.edu (18.7.74.73) by oc11exedge2.exchange.mit.edu (18.9.3.18) with Microsoft SMTP Server (TLS) id 15.0.1497.18; Thu, 27 May 2021 00:52:36 -0400 Received: from w92exhyb7.exchange.mit.edu (18.7.71.112) by w92expo19.exchange.mit.edu (18.7.74.73) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 27 May 2021 00:52:51 -0400 Received: from NAM12-BN8-obe.outbound.protection.outlook.com (104.47.55.177) by w92exhyb7.exchange.mit.edu (18.7.71.112) with Microsoft SMTP Server (TLS) id 15.0.1497.18 via Frontend Transport; Thu, 27 May 2021 00:52:51 -0400 Received: from MW4PR03CA0048.namprd03.prod.outlook.com (2603:10b6:303:8e::23) by BL0PR01MB4945.prod.exchangelabs.com (2603:10b6:208:62::31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4173.20; Thu, 27 May 2021 04:52:50 +0000 Received: from CO1NAM11FT026.eop-nam11.prod.protection.outlook.com (2603:10b6:303:8e:cafe::1e) by MW4PR03CA0048.outlook.office365.com (2603:10b6:303:8e::23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4173.20 via Frontend Transport; Thu, 27 May 2021 04:52:50 +0000 Received: from mail-lf1-f52.google.com (209.85.167.52) by CO1NAM11FT026.mail.protection.outlook.com (10.13.175.67) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4129.25 via Frontend Transport; Thu, 27 May 2021 04:52:49 +0000 Received: by mail-lf1-f52.google.com with SMTP id w33so6017072lfu.7 for ; Wed, 26 May 2021 21:52:49 -0700 (PDT) From: RussellMc To: Microcontroller discussion list - Public. Sender: "piclist-bounces@mit.edu" Date: Wed, 26 May 2021 21:52:10 -0700 Subject: Re: [OT]:: Salt Water Concrete Thread-Topic: [OT]:: Salt Water Concrete Thread-Index: AddStbfjh3Gn2FM0SJ63o5Triu+WFQ== Message-ID: References: List-Help: List-Subscribe: , List-Unsubscribe: , In-Reply-To: Reply-To: Microcontroller discussion list - Public. Accept-Language: en-US X-MS-Exchange-Organization-AuthAs: Anonymous X-MS-Exchange-Organization-AuthSource: TS500.efplus4.local X-MS-Has-Attach: X-Auto-Response-Suppress: All X-MS-Exchange-Organization-SenderIdResult: Pass X-MS-Exchange-Organization-PRD: mit.edu X-MS-TNEF-Correlator: received-spf: Pass (protection.outlook.com: domain of gmail.com designates 209.85.167.52 as permitted sender) receiver=protection.outlook.com; client-ip=209.85.167.52; helo=mail-lf1-f52.google.com; dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=qcYauPLCXqv5B8B3Vhs9yDl/MzmZ4kz+dA0CHuGSIZ0=; b=MSN10S2+PPnfssTLqopr8ywFyhxSEPA5VxfF0gPBsatPTekSe688ejzppZ6Qcwba86 kDAx04vO6mfW+DjP02+Z5G4g95vQ35+yYC+kYV7esac/2IXzXjaGkbo6NKhYsa7R8BDq uDLcG1u4q6A3Cej1RaTBe+SDzg9IRRloQJ/BAPuucAv2LOsuDyMXWWC51t7vgbiOAD51 79Vz8pjJV34hTMUomhDvYnrperc5NipQNX83DbCG6deALYv4OvhdW+85rbe+IIcT467F cfB6B5fUjOkGyQj+MUtuUb6yTe3TYQ5dQ0ZoPLK50dPYikKU//4S3p6MUcPBX+REggFh IMNw== authentication-results: spf=pass (sender IP is 209.85.167.52) smtp.mailfrom=gmail.com; mit.edu; dkim=pass (signature was verified) header.d=gmail.com; mit.edu; dmarc=pass action=none header.from=gmail.com; errors-to: piclist-bounces@mit.edu list-id: "Microcontroller discussion list - Public." list-post: x-beenthere: piclist@mit.edu x-mailman-version: 2.1.6 x-received: by 2002:a05:6512:94d:: with SMTP id u13mr1102076lft.344.1622091167516; Wed, 26 May 2021 21:52:47 -0700 (PDT) x-topics: [OT] x-content-filtered-by: Mailman/MimeDel 2.1.6 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 On Thu, 27 May 2021 at 14:44, Ryan O'Connor wrote: > Neither. That could be a game changer for tunnels and bridges though? > Things are hell expensive to maintain because of the rusting steel > long-term. > Things like eg the wharf at Tolaga Bay would last about forever :-) The Pantheon and the Parthenon are built of unreinforced concrete. ~=3D 2000 years on they are doing quite well. NONE of our modern conventionally steel reinforced structures will last anywhere near that long. eg epoxy coated steel may. Add heavy galvanising for extra points. Russell > > > > > > > https://www.monolithic.org/blogs/presidents-sphere/salt-water-concrete-a-= reality?fbclid=3DIwAR2vtnDzySzzy2OHGm_fM09dgswB9YuuwMSOUOHE00I-peMRrWiLFvI7= jk8 > > > > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .