Proceedings of the 15th African Regional Conference on Soil Mechanics and Geotechnical Engineering: Resource and Infrastructure Geotechnics in Africa: Putting Theory into Practice

767 Pages·2011·25.98 MB·English

by  S.W. Jacobsz

PROCEEDINGS OF THE 15TH AFRICAN REGIONAL
CONFERENCE ON SOIL MECHANICS AND
GEOTECHNICAL ENGINEERING
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Proceedings of the 15th African
Regional Conference on Soil
Mechanics and Geotechnical
Engineering
Resource and Infrastructure Geotechnics in Africa:
Putting Theory into Practice
Edited by
Carlos Quadros
TÉCNICA-Engenheiros Consultores, Maputo, Mozambique
and
S.W. Jacobsz
Department of Civil Engineering, University of Pretoria, Pretoria, South Africa

Amsterdam • Berlin • Tokyo • Washington, DC
© 2011 The authors and IOS Press.
All rights reserved. No part of this book may be reproduced, stored in a retrieval system,
or transmitted, in any form or by any means, without prior written permission from the publisher.
ISBN 978-1-60750-777-2 (print)
ISBN 978-1-60750-778-9 (online)

Publisher
IOS Press BV
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PRINTED IN THE NETHERLANDS
Proceedings of the 15th African Regional Conference on Soil Mechanics and Geotechnical Engineering v
C. Quadros and S.W. Jacobsz (Eds.)
IOS Press, 2011
© 2011 The authors and IOS Press. All rights reserved.
Preface
th
The Mozambican Geotechnical Society (SMG) organized with great pleasure the 15
African Regional Conference on Soil Mechanics and Geotechnical Engineering in
Maputo. The valuable contribution of the South African Geotechnical Chapter particu-
larly in the review of the abstracts and papers is gratefully acknowledged.
The general theme of the conference was Resource and Infrastructure Geotechnics
in Africa: Putting Theory into Practice. More than half of the papers submitted by au-
thors are related to the construction of geotechnical works in Africa. Roads, airports,
bridges, dams, railways, among other significant works were the subject of these papers.
This signals a remarkable growth in the number of infrastructure projects that have
been carried out or are under construction in Africa.
The increasingly specialized nature of the construction works and some very diffi-
cult local conditions demand a deeper knowledge of soil mechanics and geotechnical
engineering and the involvement of large numbers of geotechnical engineers, as well as
specialists of related areas such as geology, rock mechanics, subsurface investigation
and field and laboratory testing. The drastic increase in the number of projects in the
mining industry will also create additional opportunities and challenges for geotechni-
cal engineers. The proper training of these individuals must be a priority in Africa. We
hope that this conference has made a significant contribution towards this goal.
The 94 papers submitted to this Conference are presented in 8 sections namely
Roads (17), Foundations (14), Lateral Support and Retaining Walls (11), Materials
Testing (16), Site Investigation (20), Environmental Engineering (5), Slopes (3), Dams
(2) and General (6). Three Keynote Lectures presented at the Conference on relevant
issues for the African continent are included in this volume.
The Editors wish to thank the authors for their valuable work in the preparation of
the papers and the members of the Organizing Committee and of the Scientific Com-
mittee for the assistance and engagement that made this publication possible.
The Editors
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vii

Conference Advisory Committee (CAC)
Samuel EJEZIE Vice-President of ISSMGE for Africa
Jean-Louis BRIAUD President of ISSMGE
Pedro Sêco PINTO Immediate past President of ISSMGE
Neil TAYLOR Secretary General of ISSMGE
Mounir BOUASSIDA Immediate past Vice President of ISSMGE for Africa
Carlos QUADROS President of Mozambican Geotechnical Society (SMG)
Peter DAY Past Vice-President of ISSMGE for Africa
th
Etienne KANA Co-Chairman of 14 ARC
Saturnino CHEMBEZE Secretary of Mozambican Geotechnical Society (SMG)
Conference Organizing Committee (COC)
Carlos QUADROS
Saturnino CHEMBEZE
Ivan MINDO
Adozinda MANHIQUE
Daniel TINGA
Elis JOSÉ
Ernesto PALAVE
Fleyd CAMBALA
Sidney DE ABREU
Salomão JAMBE
Ilda SANTOS
Conference Scientific Committee (CSC)
Alan PARROCK
Ahmed ELSHARIEF
Carlos QUADROS
Deolinda NUNES
Eduard VORSTER
Esve JACOBSZ
Etiene KANA
Gavin WARDLE
Gerhard HEYMANN
Heather DAVIS
John MUKABI
John STIFF
Kamel ZAGHOUANI
Kolawole OSINUBI
M-Abdel BENLTAYEF
viii
Michelle THERON
Mounir BOUASSIDA
Nico VERMEULEN
Nicol CHANG
Peter DAY
Phil PAIGE-GREEN
Protus MURUNGA
Richard PUCHNER
Samuel AMPADU
Samuel EJEZIE
Trevor GREEN
List of Exhibitors
Organization/Company Country
ANE Mozambique
APAGEO France
ARA SUL Mozambique
CETA Mozambique
COBA Portugal
COLLINS Mozambique
CONTROLLAB France
DURA SOLETANCHE BACHY South Africa
FORDIA France
FRANKI AFRICA South Africa
GAST INTERNATIONAL South Africa
GEOCONTROLE Portugal
GEODRILL Mozambique
GEOMECHANICS South Africa
GIGSA South Africa
GUNDLE South Africa
HUESKER Germany
KAYTECH South Africa
LEM Mozambique
MACCAFERRI South Africa
MODENA Mozambique
MOTA- ENGIL Portugal
NAUE Germany
SEDIDRILL France
SOILLAB South Africa
STEFANUTTI STOCKS South Africa
TECNICA Mozambique
TEIXEIRA DUARTE Portugal
ZAGOPE Portugal
ix

Main Sponsors
ROAD FUND, Mozambique, www.fe.gov.mz
TÉCNICA-Engenheiros Consultores Ltd, Mozambique, www.tec.co.mz
CETA Construções e Serviços S.A., Mozambique, www.ceta.co.mz
ROYAL EMBASSY OF DENMARK, Mozambique
TEIXEIRA DUARTE Engenharia e Construções, S.A., Portugal, www.teixeiraduarte.pt
FRANKI AFRICA, South Africa, www.esorfranki.co.za
Gold Sponsors
DURA SOLETANCHE BACHY, South Africa, www.durasb.co.za
SOARES DA COSTA, Mozambique, www.soaresdacosta.pt
MACCAFERRI Southern Africa, South Africa, www.maccaferri.co.za
Sponsors
GEOKON, USA, www.geokon.com
COBA Consultores de Engenharia e Ambiente, Portugal, www.coba.pt
ARQ Consulting Engineers, South Africa, www.arq.co.za
COLLINS Sistemas de Águas Ltd, Mozambique, [email protected]
MODENA DESIGN Ltd, Mozambique, [email protected]
IT.COM Tecnologias de Informação e Comunicação, Mozambique, www.itcom.co.mz
HUESKER, Germany, www.huesker.com
SINAVIA Sinalização e Pintura, Ltd, Mozambique, [email protected]
JONES & WAGENER Consulting Civil Engineers, South Africa, www.jaws.co.za
GUNDLE GeoSynthetics (Pty) Ltd, South Africa, [email protected]
ARA-SUL, Mozambique, [email protected]
UEM Universidade Eduardo Mondlane, Mozambique