cathodic protection of steel in concrete

Cathodic Protection of Steel in Concrete and Masonry Second Edition Edited by Paul M Chess John P Broomfield A SPON PRESS BOOK Cathodic Protection of Steel in Concrete and Masonry Second Edition Cathodic Protection of Steel in Concrete and Masonry Second Edition Edited by Paul M Chess John P Broomfield A SPON PRESS BOOK CRC Press Taylor & Francis Group 6000 Broken Sound Parkway NW, Suite 300 Boca Raton, FL 33487-2742 © 2014 by Taylor & Francis Group, LLC CRC Press is an imprint of Taylor & Francis Group, an Informa business No claim to original U.S Government works Version Date: 20130830 International Standard Book Number-13: 978-0-203-93807-2 (eBook - PDF) This book contains information obtained from authentic and highly regarded sources Reasonable efforts have been made to publish reliable data and information, but the author and publisher cannot assume responsibility for the validity of all materials or the consequences of their use The authors and publishers have attempted to trace the copyright holders of all material reproduced in this publication and apologize to copyright holders if permission to publish in this form has not been obtained If any copyright material has not been acknowledged please write and let us know so we may rectify in any future reprint Except as permitted under U.S Copyright Law, no part of this book may be reprinted, reproduced, transmitted, or utilized in any form by any electronic, mechanical, or other means, now known or hereafter invented, including photocopying, microfilming, and recording, or in any information storage or retrieval system, without written permission from the publishers For permission to photocopy or use material electronically from this work, please access www.copyright com (http://www.copyright.com/) or contact the Copyright Clearance Center, Inc (CCC), 222 Rosewood Drive, Danvers, MA 01923, 978-750-8400 CCC is a not-for-profit organization that provides licenses and registration for a variety of users For organizations that have been granted a photocopy license by the CCC, a separate system of payment has been arranged Trademark Notice: Product or corporate names may be trademarks or registered trademarks, and are used only for identification and explanation without intent to infringe Visit the Taylor & Francis Web site at http://www.taylorandfrancis.com and the CRC Press Web site at http://www.crcpress.com Contents Editors Contributors Corrosion in reinforced concrete structures vii ix PAUL M CHESS Corrosion in masonry structures 17 DAVID FARRELL Site appraisal to enable efficient cathodic protection design 31 JOHN BROOMFIELD Cathodic protection mechanism and a review of criteria 41 KEVIN DAVIES AND JOHN BROOMFIELD History and principles of cathodic protection for reinforced concrete 57 PAUL M CHESS AND JOHN BROOMFIELD 6 Immersed cathodic protection design 65 ARNAUD MEILLIER Design of a cathodic protection system for exposed reinforced concrete structures 109 PAUL M CHESS Design of a cathodic protection system for masonry 129 JOHN BROOMFIELD v vi Contents Design of cathodic protection systems for new reinforced concrete structures 137 RICHARD PALMER 10 Power supplies 161 PAUL M CHESS AND FRITS GRONVOLD 11 Monitoring cathodic protection in concrete and masonry structures 185 JOHN BROOMFIELD 12 Case studies of cathodic protection installations 205 HERNÂNI ESTEVES, RENE BRUECKNER, CHRIS ATKINS, TONY GERRARD, AND ULRICH HAMMER 13 Economic aspects 227 PAUL LAMBERT Index 239 Editors Dr Paul M Chess is specialised in reinforced concrete and building corrosion problems around the globe He is the managing director of CP International, for which he has worked since 1994 Dr John Broomfield is an independent consulting engineer specialised in corrosion problems on large steel framed structures and corrosion of steel in concrete and has more than 25 years of experience in the design of cathodic protection systems for such structures vii Contributors Chris Atkins  is in Mott MacDonald, Altrincham, Cheshire, United Kingdom John Broomfield  is in Broomfield Consultants, Surrey, United Kingdom Rene Brueckner is in Mott MacDonald, Altrincham, Cheshire, United Kingdom Paul M Chess  is in CP International, Vallensbaek Strand, Denmark Kevin Davies  is in Corrociv Limited, Manchester, United Kingdom Hernâni Esteves  is in Ed Züblin AG, Stuttgart, Germany David Farrell  is in Rowan Technologies, Manchester, United Kingdom Tony Gerrard  is in BAC Corrosion Control Limited, Shropshire, United Kingdom Frits Gronvold  is in Gronvold & Karnov, Vallensbaek Strand, Denmark Ulrich Hammer  is in Ed Züblin AG, Stuttgart, Germany Paul Lambert  is in Mott MacDonald, Altrincham, Cheshire, United Kingdom Arnoud Meillier  is in ACS Associés, Gardanne, France Richard Palmer  is in Palmer Consulting, Divonne-les-Bains, France ix ... of steel in concrete It affects the corrosion potential, the corrosion rate, concrete resistivity and the transport process in the concrete The transport process and the electrolytic concrete resistivity... protection of steel in concrete and masonry Fortunately, in the majority of steel-reinforced concrete structures corrosion does not occur in the design life In principle, with concrete of suitable... the concrete matrix This process called carbonation, although progressing increasingly slowly, may in time penetrate the concrete to a depth of 25 mm or so (depending on the quality of the concrete