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A polymetric structure, unidirectional or bidirectional. In the form of manufactured sheet, consisting of a regular network of integrally connected elements, whicn may be linked by extrusion, bonding or interlacing, whose openings are larger than the constituents, used in geotechnical, environmental, hydraulic and transportation engineering applications.
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Specification
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BIAXIAL GEOGRIDS
Biaxial Geogrids manufactured from select grades of high tenacity, high molecular weight, and low carboxyl end group polyester yarn to ensure high strengths, low creep and excellent durability. The yarns are formed into a dimensionally stable grid structure with uniform apertures, using an advanced weft insertion warp knitting process and are then given a tough and durable polymeric coating to enhance dimensional stability, resistance to installation damage and durability. Biaxial Geogrids are suitable for the reinforcement of soils and other granular materials where strength in both directions is important.
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BIAXIAL Geogrids conform to the following feature values :
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Property
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Test Method
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GEOGRID
B-30
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GEOGRID
B-40
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GEOGRID
B-60
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GEOGRID
B-90
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Ultimate tensile strength (1) (kn/m)
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MD
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ASTM D 6637
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30
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40
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60
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90
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CD
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30
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40
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60
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90
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Elongation at maximum load (%)
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MD
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14
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15
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15
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15
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CD
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14
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15
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15
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15
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Tensile strength at 2% elongation (kN/m)
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MD
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6.0
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7.5
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9.0
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11.0
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CD
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6.0
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7.5
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7.5
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9.0
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Tensile strength at 5% elongation (kN/m)
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MD
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10.5
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14.0
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16.0
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25.0
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CD
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10.5
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14.0
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16.0
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21.0
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Aperture size (mm) (± 2 mm)
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MD X CD
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26X26
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25X25
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25X25
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23X23
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MD Machine Direction CD Cross Direction (1) Minimum Average Roll Values
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Standard Roll Dimensions
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Roll length (m)
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100/50
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Roll width (m)
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5.0/2.5
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APPLICATIONS
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PAVEMENT SUBGRADE STABILIZATION
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AREA / GROUND STABILIZATION
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PAVEMENT BASE REINFORCEMENT
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WORKING & LOAD TRANSFER PLATFORMS
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RAIL TRACK-BED STABILIZATION
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REINFORCED GRANULAR FOUNDATION BEDS
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Specification
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UNIAXIAL GEOGRIDS
UNIAXIAL Geogrid are knitted polyester geogrids with a protective polymeric coating engineered for demanding soil reinforcement applications. Geogrid is manufactured from select grades of high tenacity polyester yarn with molecular weight > 25,000 and carboxyl end groups < 30, to ensure high strengths, low greep and excellent durability. The yarns are formed into a dimensionally stable grid structure with uniform apertures, using an advanced weft insertion warp knitting process and is then given a tough and durable polymeric coating to enhance dimensional stability, resistance to installation damage and durability.
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UNIAXIAL Geogrid conform to the following feature values :
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Property
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TEST METHOD
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UNIT
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Geogrid
U-40
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Geogrid
U-60
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Geogrid
U-80
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Geogrid
U-100
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Geogrid
U-120
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Geogrid
U-150
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Geogrid
U-200
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Geogrid
U-250
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Ultimate tensile strength (1)
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MD
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ASTM D-6637
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kN/m
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40
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60
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80
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100
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120
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150
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200
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250
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CD
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20
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20
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30
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30
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30
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30
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30
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30
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Reduction Factors (RF) and Machine Direction Long-term Design Strength (LTDS)
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Creep (RFCR)
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120 years life, 40·° C temp.
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1.55
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1.55
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1.55
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1.55
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1.55
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1.55
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1.55
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1.55
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Installation damage (F ID)
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Sand/silt/clay
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1.05
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1.05
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1.05
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1.05
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1.05
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1.05
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1.05
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1.05
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<37.5 mm gravel
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1.15
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1.15
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1.15
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1.15
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1.15
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1.15
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1.15
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1.15
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Durability (RF D)
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pH=4 to 9
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1.15
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1.15
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1.15
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1.15
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1.15
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1.15
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1.15
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1.15
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LTDS – 120 years, 40·° C temp,sand/silt/clay; pH = 4 - 9
LTDS-120 years, 40·° C temp, Gravel < 7.5; pH = 4 – 9
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kN/m
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21.4
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32.0
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42.7
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53.4
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64.1
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80.1
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106.8
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133.5
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kN/m
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19.5
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29.3
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39.0
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48.8
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58.5
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73.2
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97.5
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121.9
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Aperture size (± 2 mm)
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mm
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30 x 25
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30 x 25
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30 x 25
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30 x 23
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30 x 23
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30 x 23
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30 x 23
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30 x 22
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Standard Roll Dimensions
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Roll Length
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m
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50 / 100
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50/100
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50/100
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50/100
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50/100
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50/100
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50/100
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50/100
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Roll Width
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m
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5.0/2.5
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5.0/2.5
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5.0/2.5
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5.0/2.5
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5.0/2.5
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5.0/2.5
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5.0/2.5
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5.0/2.5
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MD Machine Dimension CD Cross Direction (1) Minimum Average Roll Values
Information on frictional characteristics are available on request
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APPLICATIONS
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REINFORCED SOIL WALLS
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REINFORCED STEEP SLOPES
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REINFORCED EMBANKMENTS OVER SOFT SOIL
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LANDSLIDE REPAIR
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VENEER REINFORCEMENT
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