Matakuliah
Tahun
Versi
: S0522/ Aplikasi Geosintetik Dalam Teknik Sipil
: Juli 2005
: 01/01
Pertemuan 08
GEOSYNTHETICS CLAY LINERS
( GCL)
Learning Outcomes
Pada akhir pertemuan ini, diharapkan
mahasiswa akan mampu :
• Mahasiswa mampu menghitung dan
mendesain aplikasi pemakaian GCL sesuai
kondisi lapangan dan kebutuhan.  C3 , C5
• Mahasiswa mampu membandingkan
pemakaian GCLl sesuai dengan analisa
desain bagi perbaikan tanah.  C4
Outline Materi
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GCL
Fungsi dan properties
Metoda desain dan pemilihan GCL
Perhitungan dan perencanaan GCL
Metoda Konstruksi pemasangan GCL
Sebagian Materi ini diambil dari IGS Lecturer Notes
No. 16 of 19
Geosynthetics in Landfills: Caps and Covers
by
Dr-Ing Erwin Gartung
LGA Nürnberg, Germany
Laying GCL Capping
Geosynthetic Clay Liners
• GCLs
are composed of mineral and geosynthetic components
are very thin in comparison with compacted clay
are manufactured industrially
are transported to the construction site
are installed easily by construction contractors
are hydrating and swelling
are highly efficient hydraulic barriers
are sensitive with respect to mechanical damage
are applied for the protection of the environment
Laying GCL
Lapping GCLs
General Requirements
• Sealing function
• Mechanical resistance
• Durability
• Constructability
Manufacturing Quality Control
• Of raw materials, bentonite, geosynthetics
• Of intermediate products, geotextiles
• Of production process, documentation
• Of the finished product, GCLs
Construction Quality Control
• Installation according to design drawing
• subgrade properly prepared
i.e. free of stones
• anchoring ditches
• liners are checked for mechanical damage
Laying Polymeric Capping
Double Seam Joint in HDPE
Geosynthetic Multi-layer Capping
Seam Welder
Air Pressure Test of Seam
Tensile Test of Seam Sample
Capping
Poor Workmanship Allowing GCL to become
‘wrinkled’
Drainage Geocomposites
• Advantages:
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Small mass,
Small thickness,
Savings in waste storage space,
Easy handling and placement,
Uniform quality,
Available in all parts of the world
Low costs
Drainage Geocomposite
Recycled Polymers used as a
Drainage Geocomposite
Recycled Polymers used as a
Drainage Geocomposite
Geosynthetic Capping
Drainage Geocomposite
Leachate Collection System
System
Summary
• Geomembranes, geocomposite drains,
geotextiles, geosynthetic clay liners and
geogrids are generally accepted as reliable
members in the construction of
landfill
liners and covers