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What is EPS Geofoam? What is EPS Geofoam?
- Expanded Polystyrene
- Light-weight cellar plastic (commonly called
stryofoam)
- Molded in blocks used for construction purposes
Fabricated Geomembranes for EPS Geofoam Applications Steven F. - - PowerPoint PPT Presentation
Fabricated Geomembranes for EPS Geofoam Applications Steven F. - - PowerPoint PPT Presentation
Fabricated Geomembranes for EPS Geofoam Applications Steven F. Bartlett, Ph.D., P.E. What is EPS Geofoam? What is EPS Geofoam? Expanded Polystyrene Light-weight cellar plastic (commonly called stryofoam) Molded in blocks used for
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SLIDE 3
Geofoam Manufacturing Geofoam Manufacturing
Courtesy of EPSFoamPro.com Courtesy of EPSFoamPro.com
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Block Molding of EPS
Courtesy of Tri State Foam
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EPS Properties EPS Properties
Courtesy EPS Alliance
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EPS Embankment
UTA Light Rail – Salt Lake City, Utah SR 519 Project – Seattle, Washington
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Common Uses of EPS Geofoam Common Uses of EPS Geofoam
- Reduce settlement to protect buried utilities and
adjacent structures on soft ground
- Improve stability and bearing capacity of
embankments, embankments,
- Improve stability landslides and cut slopes
- Rapid construction in time critical areas
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Settlement Reduction and Buried Utilities Buried Utilities
B i d Pi li Buried Pipeline NEW FILL Buried Pipeline NEW FILL Buried Pipeline Ruptured Pipeline
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Settlement Reduction and Buried Utilities
Buried Utilities Utilities Geofoam Embankment from State St. to 200 W. Interstate I-80, Salt Lake City, Utah
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Improving Bearing Capacity and Stability
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Improve Bearing Capacity and Stability
Reinforced Slope S il N il Soil Nails, Soil Anchors,
- r Other
Reinforcement Reinforcement Cut slope or Cut slope or landslide
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Rapid Construction
(Comparison of Construction Time)
35 25 30 Conventional Geofoam
(Weeks)
20 25
- n Time
10 15
nstructio
5
Co
Preparation Settlement Total
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Design Considerations
- Type
- Moisture Absorption
Type
- Dimensions
- Density
C i St th Moisture Absorption
- Buoyancy
- Thermal Resistance
Diff ti l I i
- Compressive Strength
- Allowable Load & Creep
- Interface Friction
- Differential Icing
- Chemical Attack
- Flammability
- Stability of Internal Slope
- Bedding Material & Compaction
- Concentrated Loads
- Insect Infestation
- Ultra Violet
- Degradation
Concentrated Loads Degradation
- Durability
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Design Considerations (Prevention of Chemical Attack) (Prevention of Chemical Attack)
S l t th t Di l G f
- Solvents that Dissolve Geofoam
- Gasoline
- Diesel
Diesel
- Other Petroleum Based Fuels
- Organic Fluids
- Protection Against Accidental Spills
- Concrete Load Distribution Slab
- Concrete Load Distribution Slab
- Geomembrane
- Fascia Panel Wall with Coping
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Prevention of Chemical Attack Prevention of Chemical Attack
EPS geofoam can be damaged hen e posed to EPS geofoam can be damaged when exposed to certain hydrocarbon chemical and may need protection protection. Geomembranes compatible with EPS:
- polypropylene
- polyethylene
- polyethylene
- chlorosulphonated polythylene (CSPE)
- ethylene interpolymer alloys (EIAs)
y p y y ( )
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Prevention of Chemical Attack
Rural Highway in Minnesota, Courtesy of MNDOT
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Prevention of Chemical Attack
Protection of side slope, UTA Frontrunner, Corner Canyon
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Chemical Attack - Protective Barriers I 15 Design I-15 Design
Concrete Pavement (35 cm) Load Distribution Slab (15 cm - Reinforced) Geomembrane Petroleum Resistant Petroleum Resistant (3 component) for exposed side slope
- nly
- nly
Tilt-up Panel Wall
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Chemical Attack - Protective Barriers I-15 Design
- Tripolymer Geomembrane
- Polyvinyl Chloride
Polyvinyl Chloride
- Ethylene Interpolymer Alloy
- Polyurethane
- 9 mm thickness minimum (total)
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Chemical Attack – Protective Barriers St D i d Utiliti Storm Drains and Utilities
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Geofoam Handbook
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