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Note for CONCRETE TECHNOLOGY - CT By Sarfaraj Gani

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Downloaded From : www.EasyEngineering.net Multicolour Illustrative Edition CONCRETE wwTECHNOLOGY wTHEORY .Ea AND PRACTICE syE ngi nee rin g.n et M.S. SHETTY BE, ME, FICI, FIIBE, FIE, MACCE Technical Advisor, MC Bauchemie (Ind) Pvt. Ltd. Principal Technical Consultant, Grasim Industries, Ltd. Consultant to IMCC Delhi Metro Corporation Formerly Senior Prof. and Head of Department of Construction Engineering College of Military Engineering (CME), Pune Ministry of Defence S. CHAND & COMPANY LTD. (An ISO 9001 : 2000 Company) Ram Nagar, New Delhi - 110 055 (i) Downloaded From : www.EasyEngineering.net

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Downloaded From : www.EasyEngineering.net S. CHAND & COMPANY LTD. (An ISO 9001 : 2000 Company) Head Office : 7361, RAM NAGAR, NEW DELHI - 110 055 Phones : 23672080-81-82; Fax : 91-11-23677446 Shop at: schandgroup.com E-mail: schand@vsnl.com Branches : • 1st Floor, Heritage, Near Gujarat Vidhyapeeth, Ashram Road, Ahmedabad-380 014. Ph. 27541965, 27542369 Ahuja Chambers, 1st Cross, Kumara Krupa Road, Bangalore-560 001. Ph : 22268048, 22354008 152, Anna Salai, Chennai-600 002. Ph : 28460026 S.C.O. 6, 7 & 8, Sector 9D, Chandigarh-160017, Ph-2749376, 2749377 1st Floor, Bhartia Tower, Badambadi, Cuttack-753 009, Ph-2332580; 2332581 1st Floor, 52-A, Rajpur Road, Dehradun-248 011. Ph : 2740889, 2740861 Pan Bazar, Guwahati-781 001. Ph : 2522155 Sultan Bazar, Hyderabad-500 195. Ph : 24651135, 24744815 Mai Hiran Gate, Jalandhar - 144008 . Ph. 2401630 613-7, M.G. Road, Ernakulam, Kochi-682 035. Ph : 2381740 285/J, Bipin Bihari Ganguli Street, Kolkata-700 012. Ph : 22367459, 22373914 Mahabeer Market, 25 Gwynne Road, Aminabad, Lucknow-226 018. Ph : 2626801, 2284815 Blackie House, 103/5, Walchand Hirachand Marg , Opp. G.P.O., Mumbai-400 001. Ph : 22690881, 22610885 3, Gandhi Sagar East, Nagpur-440 002. Ph : 2723901 104, Citicentre Ashok, Govind Mitra Road, Patna-800 004. Ph : 2300489, 2302100 • No. 6, ww • • • • • • • • • • • • • • • w.E asy En gin eer Marketing Offices : 238-A M.P. Nagar, Zone 1, Bhopal - 462 011. Ph : 5274723. A-14 Janta Store Shopping Complex, University Marg, Bapu Nagar, Jaipur - 302 015, Phone : 0141-2709153 © 1982, M.S. Shetty ing All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior permission of the Publisher. .ne t First Edition 1982 Subsequent Editions and Reprints 1986, 88, 89, 91, 94, 95, 96, 97, 98, 99 2000, 2001, 2002, 2003, 2004 Reprint with Corrections 2005 First Multicolour Illustrative Revised Edition 2005 ISBN : 81-219-0003-4 PRINTED IN INDIA By Rajendra Ravindra Printers (Pvt.) Ltd., 7361, Ram Nagar, New Delhi-110 055 and published by S. Chand & Company Ltd. 7361, Ram Nagar, New Delhi-110 055 (ii) Downloaded From : www.EasyEngineering.net

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Downloaded From : www.EasyEngineering.net FOREWORD A A s one who has closely watched the author’s interest and involvement in concrete technology for the past several years, I have great pleasure in writting this foreword. Concrete is by far the most widely used construction material today. The versatility and mouldability of this material, its high compressive strength, and the discovery of the reinforcing and prestressing techniques which helped to make up for its low tensile strength have contributed largely to its widespread use. We can rightly say that we are in the age of concrete. ww It is easy to make concrete. There is an old saying that broken stone, sand, and cement make good concrete. But the same proportion of broken stone, sand and cement also make bad concrete. This is mainly because the quality of the end product depends as much, and perhaps more, on the man on the job as on the constituent materials. The difference between good concrete and bad concrete lies in quality control. Extensive research work was, therefore, carried out almost from the beginning of this century not only on the materials but also on the methods used for concrete making. Still, not many men on the job seem to make use of the known techniques for making good concrete which is necessary for achieving strong, durable, and economical construction. This textbook by Prof. M.S. Shetty will, therefore, help to generate a better awareness of the potential of concrete. w.E asy En gin The book deals with several aspects of concrete technology and also covers the latest developments that have taken place in India and abroad. The coverage is comprehensive and complete. The properties of the constituent materials of concrete have been explained very lucidly in the text. The information on admixtures and on special concretes, such as air-entrained concrete, vacuum concrete, light-weight concrete, and gap-graded concrete, will be very useful to concrete engineers and those engaged in precast concrete construction. At many places in the text, the author touches upon some important, down-to-earth problems and gives specific recommendations based on his own knowledge and vast experience. The chapter on mix design gives simple and scientific procedures for the benefit of practising engineers and concrete technologists. eer ing .ne t One of the welcome features of this book is the inclusion of detailed information on recent developments relating to fibre-reinforced concrete, sulphur-impregnated concrete, and different types of polymer concrete. The author has highlighted the potential of these new materials and has laid emphasis on the need for further research. The text has been written in simple language and is supplemented by numerous illustrative examples, charts, and tables. The author has succeeded in presenting all the relevant information on concrete technology in a very effective manner. I am sure the book will be well received by students of concrete technology as well as practising engineers and research workers. M. RAMAIAH Director Structural Engineering Research Centre Madras (v) Downloaded From : www.EasyEngineering.net

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Downloaded From : www.EasyEngineering.net ACKNOWLEDGMENTS W W hat made me interested in concrete technology was my association with Shri M.R. Vinayaka of Associated Cement Company, when he was working at Koyna Dam Concrete Research Laboratory. My interest was further enhanced while teaching this fascinating subject to the graduate and postgraduate students at the College of Military Engineering. I am grateful to them. I gratefully acknowledge the following institutions and societies in the reproduction of certain tables, charts and information in my book: The American Concrete Institute, the American Society for Testing and Materials, the Cement and Concrete Association, the Portland Cement Association, the Institute of Civil Engineers, London, Department of Mines, Ottawa, Canada, the Concrete Association of India, the Cement Research Institute of India, the Central Building Research Institute, Roorkee, the Structural Engineering Research Centre, Madras, the Central Road Research Institute, Delhi, and the Bureau of Indian Standards. ww w.E A book of this nature cannot be written without the tremendous background information made available by various research workers, authors of excellent books and articles which have been referred to and listed at the end of the chapters and at the end of this book. I am thankful to them. asy En I also wish to express my sincere thanks to the Commandant, College of Military Engineering for extending all facilities and words of encouragement while working on this book. gin My special gratefulness is due to Smt. Brinda Balu and Dr. Balasubramanian for going through the manuscript with such diligence as to bring it into the present state. eer My special thanks are due to Dr. M. Ramaiah, Director, Structural Engineering Research Centre, Madras, who obliged with a foreword to this book. ing Lastly I am grateful to M/s S. Chand and Co., Ltd., for taking the responsibility of publishing this book. Place: Pune, 1982 .ne t M.S. SHETTY (vii) Downloaded From : www.EasyEngineering.net

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