Geosynthetic Clay Liners for Waste Containment
Facilities
September 30, 2002
LNEC, Lisbon
INTRODUCTION
In recent years, design engineers and environmental
agencies have shown a growing interest in the use of
geosynthetic clay liners (GCLs) as an alternative to soil
barriers as part of waste disposal facility lining and cover
systems. This interest stems from the fact that GCLs were
found to be very effective as hydraulic barriers, easy to
install, and could withstand distortion and distress while
maintaining their low hydraulic conductivity.
This course will provide a comprehensive coverage of the
use of geosynthetic clay liners for waste containment from
historical development of GCLs to current uses. It will
improve the ability to use properly GCLs by learning about
the physical/chemical characteristics of bentonite, properties
of GCLs, liner types, hydraulic performance, chemical
compatibility, and shear strength of GCLs. A particular
coverage is provided for gas permeability issues, with
specific testing and analysis recommendation given.
Equivalency analysis for regulatory compliance purposes are
also described. The course will present new insights and
understanding of GCLs performance and hence reduce some
of the uncertainties linked to their use.
COURSE HIGHLIGHTS
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Liner types
Bentonite properties
Installation
Hydraulic & shear strength properties of GCLs
Gas movement through GCLs
Equivalency GCL/CCL (Compacted Clay Liners)
Case studies
WHO SHOULD ATTEND
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Landfill owners
Technical specialist involved in design and construction
of landfills.
ABOUT THE SPEAKER
Prof. A. Malek Bouazza is a Senior Lecturer and Head of the
Geoengineering Group in the Department of Civil Engineering at
Monash University, Melbourne, Australia. He received a Ph.D. in
Civil Engineering from the University of Glasgow (U.K) in 1990.
Prof. Bouazza is actively involved in geoenvironmental research.
He has focused his work on the disposal of waste in landfills,
geosynthetics and clean up of contaminated sites, with emphasis on
liner and cover systems, cut off walls, waste mechanics, and soil
remediation. He has written over 100 peer reviewed journal and
conference proceedings papers. He is editor of a special issue on
GCLs published by The International Journal of Geotextile and
Geomembranes in March 2000. He is currently a core member and
coordinator of Technical Committee 5 on Environmental
Geotechnics of the International Society of Soil Mechanics &
Geotechnical Engineering and is the President of the Australasian
Chapter of the International Geosynthetics Society. He is an
editorial Board member of the International Journal of Geotextiles
and Geomembranes.
Sociedade Portuguesa de Geotecnia
Curso sobre
GEOSYNTHETIC CLAY
LINERS FOR WASTE
CONTAINMENT
FACILITIES
FURTHER TECHNICAL INFORMATION
Technical Information regarding the short course can be
obtained from:
Eng. Fernando Pardo de Santayana:
LNEC, Lisboa
Segunda Feira, 30 Setembro 2002
Tel.: (+351) 21 844 3321
Fax: (+351) 21 844 3021
Email: fpardo@lnec.pt
Organização:
Eng. António Roque:
SOCIEDADE PORTUGUESA DE
GEOTECNIA (SPG)
Tel.: (+351) 21 844 3321
Fax: (+351) 21 844 3021
Email: aroque@lnec.pt
Patrocínio:
Geotechnical, Geological and Environmental Engineers
Regulators
Researchers, Contractors
Laboratório Nacional de Engenharia Civil
(LNEC)
Geosynthetic Clay Liners for Waste Containment
Facilities
By: A (Malek) Bouazza
COURSE OUTLINE
8:30-9:00 Registration
9: 00
Liner Selection
 Liner types (single, composite, double, etc.)
 Liner materials (compacted clay, geomembranes,
GCLs)
 Design consideration
 Selection methodolgy
 Review of international regulations
10:00 Geosynthetic Clay Liners (GCLs): an overview
 Types and characteristics
 Geotextiles
 Bentonite properties
10:30 Break
10:45 Hydraulic Conductivity of GCLs
 Factors affecting hydraulic conductivity
 Laboratory test methods, procedures & equipment
 Effect of environmental distress (dessication,
straining, punctures)
 Example results
11.30 Chemical Compatibility of GCLs
 Bentonite consideration
 Prehydration effect
 Testing considerations
12.00 Contaminant Transport considerations for
GCLs
 Transport processes
 Significance of bentonite sorption
 Example analyses
12.30 Lunch Break
14.30 Stability and Shear Strength of GCLs
 Hydration condition
 Shear rate
 Peak versus residual strength
 Interface friction
 Example results
15:00 Gas Permeability of GCLs
 Transport processes
 Prehydration effect
 Moisture content, air content effect
 Testing procedure and equipment
 Example results
15.30 Break
15.45 Design Issues
 Example analyses
 Issues of equivalency
16.30 Pathology of GCL
 Installation damage
17:00 Close
FICHA DE INSCRIÇÃO/REGISTRATION FORM
Geosynthetic Clay Liners for Waste Containment Facilities
Nome/Name:………………………………………………
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Instituição/Empresa/Organisation:………………………
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Endereço/Address:…………………………………………
GENERAL INFORMATION
Registration/Inscrição: Participants are encouraged to
make registrations in advance by using the attached form.
Complete and return the registration form (or a copy) by
mail or fax to:
Sociedade Portuguesa de Geotecnia (SPG)
Av. do Brasil, 101, 1700-066 Lisboa, Portugal
Tel: 21 844 3321
Fax: 21 844 3021
E-mail: spg@lnec.pt; fpardo@lnec.pt.
………………………………………………………………
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Telefone/Phone:…………..………………………………..
Fax:…………………………..Email:………………………
Custo da inscrição/Registration Fee: (euros)
Sócios SPG:
Não sócios:
Estudantes:
€ 100,00
€ 150,00
€ 50,00
Confirmo a minha inscrição no Curso e envio cheque à
Venue/Local: The course is being held at:
Pequeno Auditório, Centro de Congressos do LNEC
Av. do Brasil, 101, 1700-066 Lisboa
Sociedade Portuguesa de Geotecnia no valor de € ___,00
s/o Banco ________________________________________
Solicito recibo em nome ___________________________
Fees/Custo da inscrição: The fee for registration is € 100,00
(euros) for members of SPG and € 150,00 for non-members.
Registration fees for students are € 50,00. The fee includes
participation in the short course, reference material and
coffee/refreshments. Registration will be confirmed after
payment, which will have to be done in advance.
Registration can also be taken during the registration period
on site.
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Assinatura________________________________________
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Language: The language of the course will be English. No
simultaneous translation will be provided.
Sociedade Portuguesa de Geotecnia
Av. do Brasil, 101, 1700-066 Lisboa, Portugal