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DESIGN FUNDAMENTALS FOR
GEOSYNTHETIC SOIL TECHNIQUE
by:Dandung S. Harninto
GEO = earth, soilSYNTHETIC = made by human
Geosynthetics =• A planar, polymeric (synthetic or natural)
material used in contact with soil/rock and/or any other geotechnical material, for Filtration,Drainage, Separation, Reinforcement, Protection, Sealing and Packing.
GEOSYNTHETICS
PERMEABLE IMPERMEABLE
Geotextiles Related ProductsGeosyntheticClay Liners
(GCL)Geomembranes
Woven
Non Woven
Knitted
Geogrids
Geonets
Geocells
Geostrips
Geomats
Geospacers
Polymeric-Elastomerics
- Thermoplastic
Bituminous
GEOSYNTHETICS
PERMEABLE IMPERMEABLE
Geotextiles Related ProductsGeosyntheticClay Liners
(GCL)Geomembranes
Woven
Non Woven
Knitted
Geogrids
Geonets
Geocells
Geostrips
Geomats
Geospacers
Polymeric-Elastomerics
- Thermoplastic
Bituminous
GEOSYNTHETICS
PERMEABLE IMPERMEABLE
Geotextiles Related ProductsGeosyntheticClay Liners
(GCL)Geomembranes
Woven
Non Woven
Knitted
Geogrids
Geonets
Geocells
Geostrips
Geomats
Geospacers
Polymeric-Elastomerics
- Thermoplastic
Bituminous
GEOSYNTHETICS
PERMEABLE IMPERMEABLE
Geotextiles Related ProductsGeosyntheticClay Liners
(GCL)Geomembranes
Woven
Non Woven
Knitted
Geogrids
Geonets
Geocells
Geostrips
Geomats
Geospacers
Polymeric-Elastomerics
- Thermoplastic
Bituminous
GEOSYNTHETICS
PERMEABLE IMPERMEABLE
Geotextiles Related ProductsGeosyntheticClay Liners
(GCL)Geomembranes
Woven
Non Woven
Knitted
Geogrids
Geonets
Geocells
Geostrips
Geomats
Geospacers
Polymeric-Elastomerics
- Thermoplastic
Bituminous
GEOSYNTHETICS
PERMEABLE IMPERMEABLE
Geotextiles Related ProductsGeosyntheticClay Liners
(GCL)Geomembranes
Woven
Non Woven
Knitted
Geogrids
Geonets
Geocells
Geostrips
Geomats
Geospacers
Polymeric-Elastomerics
- Thermoplastic
Bituminous
GEOSYNTHETICS
PERMEABLE IMPERMEABLE
Geotextiles Related ProductsGeosyntheticClay Liners
(GCL)Geomembranes
Woven
Non Woven
Knitted
Geogrids
Geonets
Geocells
Geostrips
Geomats
Geospacers
Polymeric-Elastomerics
- Thermoplastic
Bituminous
GEOSYNTHETICS
PERMEABLE IMPERMEABLE
Geotextiles Related ProductsGeosyntheticClay Liners
(GCL)Geomembranes
Woven
Non Woven
Knitted
Geogrids
Geonets
Geocells
Geostrips
Geomats
Geospacers
Polymeric-Elastomerics
- Thermoplastic
Bituminous
GEOSYNTHETICS
PERMEABLE IMPERMEABLE
Geotextiles Related ProductsGeosyntheticClay Liners
(GCL)Geomembranes
Woven
Non Woven
Knitted
Geogrids
Geonets
Geocells
Geostrips
Geomats
Geospacers
Polymeric-Elastomerics
- Thermoplastic
Bituminous
GEOSYNTHETICS
PERMEABLE IMPERMEABLE
Geotextiles Related ProductsGeosyntheticClay Liners
(GCL)Geomembranes
Woven
Non Woven
Knitted
Geogrids
Geonets
Geocells
Geostrips
Geomats
Geospacers
Polymeric-Elastomerics
- Thermoplastic
Bituminous
GEOSYNTHETICS
PERMEABLE IMPERMEABLE
Geotextiles Related ProductsGeosyntheticClay Liners
(GCL)Geomembranes
Woven
Non Woven
Knitted
Geogrids
Geonets
Geocells
Geostrips
Geomats
Geospacers
Polymeric-Elastomerics
- Thermoplastic
Bituminous
GEOSYNTHETICS
PERMEABLE IMPERMEABLE
Geotextiles Related ProductsGeosyntheticClay Liners
(GCL)Geomembranes
Woven
Non Woven
Knitted
Geogrids
Geonets
Geocells
Geostrips
Geomats
Geospacers
Polymeric-Elastomerics
- Thermoplastic
Bituminous
GEOSYNTHETICS
PERMEABLE IMPERMEABLE
Geotextiles Related ProductsGeosyntheticClay Liners
(GCL)Geomembranes
Woven
Non Woven
Knitted
Geogrids
Geonets
Geocells
Geostrips
Geomats
Geospacers
Polymeric-Elastomerics
- Thermoplastic
Bituminous
Combigrids
GEOSYNTHETICS
PERMEABLE IMPERMEABLE
Geotextiles Related ProductsGeosyntheticClay Liners
(GCL)Geomembranes
Woven
Non Woven
Knitted
Geogrids
Geonets
Geocells
Geostrips
Geomats
Geospacers
Polymeric-Elastomerics
- Thermoplastic
Bituminous
Pvd =prefabricated vertical drain
GEOSYNTHETICS
PERMEABLE IMPERMEABLE
Geotextiles Related ProductsGeosyntheticClay Liners
(GCL)Geomembranes
Woven
Non Woven
Knitted
Geogrids
Geonets
Geocells
Geostrips
Geomats
Geospacers
Polymeric-Elastomerics
- Thermoplastic
Bituminous
geodrain
Bases Functions
• Drainage, to collect and transport fluids
>> geodrain>> prefabricated vertical drain
Bases Functions
• Filtration, to allow passage of fluids while preventing passage of soil particles
>> non woven geotextiles
Bases Functions• Protection, to prevent damage of a
layer
>> non woven geotextiles
Bases Functions• Reinforcement, to improve the shear
resistance of a soil
>> geogrids,>> high strength woven geotextiles
Bases Functions• Separation, to maintain the integrity of a soil
layer
>> non woven geotextiles>> woven geotextiles>> combination geogrids and non woven
Bases Functions• Erosion control, to prevent soil
erosion by water or wind forces
>> geomats
Bases Functions• Barrier, to prevent the migration of
liquids orgases
>> GCL>> geomembranes
Bases Functions• Containing, to cover soil or sand to prevents
of scouring
>> non woven geotextiles>> woven geotextiles
GEOSYNTHETIC REINFORCED SOIL TECHNIQUE
GEOSYNTHETIC REINFORCED SOIL TECHNIQUE
W1W2
ΣM = 0
M1
M2
Z1
MT1
Z2MT2
M1
M2+MZ1+MZ2 … = SF
GEOSYNTHETIC REINFORCED SOIL TECHNIQUE
GEOSYNTHETIC REINFORCED SOIL TECHNIQUE
The soil reinforcement by geosynthetics generatesa mechanical improvement of the soil bysupporting tensile forces. The reinforcing elementsare flexible and, due to their low bendingstiffness, can only absorb axial tensile loads. Theimprovement acts to reduce the shear force thathas to be carried by the soil, and to enhance theshearing resistance in the soil by increasing thenormal stress acting on potential shear surfaces.
Geosynthetic reinforced fill slopes and walls
Geosynthetic reinforced fill slopes and walls
Geosynthetic reinforced fill slopes and walls
Geosynthetic reinforced fill slopes and walls
Geosynthetic reinforced bearing layers
Geosynthetic reinforced bearing layers
Possible Reinforcement Function in Roadways (After Haliburton et al., 1981)
Geosynthetic reinforced bearing layers
a. Reinforcement at base/subgrade interface.
b. Reinforcement in base course.
Geosynthetic separate layers
Subgrade separation (After Rankilor, 1981)
Geosynthetic reinforced bearing layers
Applicability Assessment for unpaved roads. (After USACE, 2003).
Applicability assessment for flexible paved roads. (After US Army, 2003).
GEOSYNTHETIC SOIL TECHNIQUE FORWATERWAYS AND COASTAL PROTECTION
GEOSYNTHETIC SOIL TECHNIQUE FORWATERWAYS AND COASTAL PROTECTION
This can happen if you have choosen the wrong geosynthetic filter underneath your revetment system / or no erosion control at all
GEOSYNTHETIC SOIL TECHNIQUE FORWATERWAYS AND COASTAL PROTECTION
Overview of the application of geosynthetics in coastal protection.
GEOSYNTHETIC SOIL TECHNIQUE FORWATERWAYS AND COASTAL PROTECTION
GEOSYNTHETIC SOIL TECHNIQUE FORLANDFILL STRUCTURE
Capping
Base sealing
Gas Vent
Waste
Leachate Collection
TERIMA KASIH
Dandung S. Harninto
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