Description

Geogrids is a fast developing segment within Geosynthetics. Unlike woven, non-woven or knitted textile fabric, Geogrids are polymers formed into a very open, grid-like config- uration. They have large apertures between individual ribs in the transverse and longitudinal directions. Geogrids are commonly used to reinforce walls, as well as sub-bases or sub-soils below roads or structures. Geogrids are strong in tension allowing them to transfer forces to a larger area of soil.

Geogrids are:

  • Either stretched in one or two directions for improved physical properties.
  • Made on weaving or knitting machinery by standard textile manufacturing methods, or
  • Structured by bonding rods or strapstogether.

Types:

There are a lot of types of geogrids in the market. Depending on the production types, raw materials they may be defined in several categories. Some of them are:

Uni-axial Geogrids:

The uni-axial Geogrid is manufactured from Propylene. It is produced through the process of extruding, punching, heating and stretching.

Advantages of Uni-axial Geogrids:

  • Quicker construction in all weather conditions
  • No mortar, dry built
  • Optimal utilization of land
  • Aesthetically appealing
  • Versatile and flexible
  • Cost efficient
  • Minimal maintenance

Bi-axial Geogrids:

Also manuf actured f rom Propy lene, these are produced through the process of ex truding, punching, heating, longitudinal stretching and transverse stretching.

Advantages of Bi-axial Geogrids:

  • Improves the bearing capacity of Foundation
  • Prevents cracking and subsiding
  • Convenient to construct, reduces cost and maintenance expenses

Applications of Geogrids

Roads and Tunnels

For road construction projects on weak soils, a thick layer of base course is required. Using Geogrids as reinforcing layers             helps reduce the required thickness of the unbound base course – stabilizing structures on soft ground or in unsettled                     areas. Regular traffic movement causes cracks on the road surface. Geogrid’s reinforcing layers can absorb these forces               and delay propagation of cracks.

Railways

The support of a rail line, whether for new or existing track, is an essential aspect of railroad construction and maintenance.          This can be an expensive and lengthy procedure involving the mitigation of soft or variable soil conditions, frequent ballast            maintenance, and in some cases, track realignment. Geogrid is an efficient and cost-effective solution for the mechanical              stabilization of rail ballast and sub-ballast layers. This allows for the construction of rail lines with longer life or reduced                  roadbed thickness with no loss of performance. It also cuts down on track settlement and general wear and tear, which                  reduces maintenance costs, thus providing both short and long-term financial benefits.

Airport Runways

The GlasGrid System has been successfully used within asphalt overlays throughout the world to combat reflective                        cracking at runway transition. It is a full-coverage solution for the runways.

Stadiums, Hill Resorts and Golf Courses

In leisure activities like stadiums, resorts or golf courses; Geogrids are used to hold back soil, confine rock and facilitate                 greening. Special grids with cotton are used to facilitate greening.

Aquaculture

Geogrid protects channel slopes, provides resistance and stability, protecting this object from erosion.Geogrid application               considerably reduces losses, connected with fall of ground, landslides and deformation of slopes. In case of water streams             construction, geogrid application allows planting trees and shrubs along the banks protecting them from ablation.

Reservoirs and Canals

Geogrids are an economical solution for filling water stream base. Additional advantage is drainage along channels.

Biaxial Geogrid SA

Maximum tensile strength is 50kN/m on both MD & XMD

Performance

Biaxial Geogrid is manufactured from Polypropylene. It is produced through the process of extruding, punching, heating, longitudinal stretching and transverse stretching.

  • High tensile strength at both longitudinal and transverse direction

Benefits

  • Improving bearing capacity of foundation
  • Preventing cracking and subsiding
  • Convenient to construct, reducing cost and maintaining expense

Application

  • Road Reinforcement
  • Expressway Reinforcement
  • Railway Reinforcement
  • Port Reinforcement
  • Airport Reinforcement
  • Landfill Reinforcement
  • Irrigation Project
  • Sea Reclamation Project

Dimension

ProductALATWLRWTRtLRtTRtJ
GG151536362.62.610.83.1
GG202035352.62.61.51.13.5
GG252534342.82.81.81.44.2
GG30303434332.51.54.9
GG40403333333.42.15.5
GG454532323.13.14.12.25.6
GG505030303.13.14.32.55.8
  • unit = mm

Specification

 

Index Properties

 

Test Method

 

Unit

GG1515GG2020GG2525GG3030
MD

Values

TD

Values

MD

Values

TD

Values

MD

Values

TD

Values

MD

Values

TD

Values

PolymerPP
Minimum Carbon BlackASTM D 4218%2222
Tensile Strength @ 2% StrainASTM D 6637kN/m55779910.510.5
Tensile Strength @ 5% StrainASTM D 6637kN/m10.510.5141417172121
Ultimate Tensile StrengthASTM D 6637kN/m1515202025253030
Strain @ Ultimate StrengthASTM D 6637%1313131313131313
Structural Integrity
Junction EffciencyGRI GG2%9393939393939393
Flexural RigidityASTM D 7748mg-cm250,000750,0001,000,0002,000,000
Aperture StabilityCOE Methodm- N/deg0.320.50.650.75
Dimensions
Roll Widthm3.95 or 5.953.95 or 5.953.95 or 5.953.95 or 5.95
Roll Lengthm75505050

 

 

Index Properties

 

Test Method

 

Unit

GG4040GG4545GG5050
MD

Values

TD

Values

MD

Values

TD

Values

MD

Values

TD

Values

PolymerPP
Minimum Carbon BlackASTM D 4218%222
Tensile Strength @ 2% StrainASTM D 6637kN/m1414161617.517.5
Tensile Strength @ 5% StrainASTM D 6637kN/m282832323535
Ultimate Tensile StrengthASTM D 6637kN/m404045455050
Strain @ Ultimate StrengthASTM D 6637%131313131313
Structural Integrity
Junction EffciencyGRI GG2%939393939393
Flexural RigidityASTM D 7748mg-cm4,800,00

0

6,000,0

00

8,000,00

0

Aperture StabilityCOE Methodm- N/deg0.981.051.1
Dimensions
Roll Widthm3.953.953.95
Roll Lengthm505050

 

Note: MD = Machine Direction; TD = Transverse Direction

Biaxial Geogrid RA

Improve long-term performance and reduce cost in road construction GG1100 & GG1200 is an equivalent Biaxial Geogrid to BX1100 & BX1200. Biaxial Geogrid is manufactured from Polypropylene. It is produced through the process of extruding, punching, heating, longitudinal stretching and transverse stretching.

Performance

  • High tensile strength at both longitudinal and transverse direction

Benefits

  • Improving bearing capacity of foundation
  • Preventing cracking and subsiding
  • Convenient to construct, reducing cost and maintaining expense

Application

  • Road Reinforcement
  • Expressway Reinforcement
  • Railway Reinforcement
  • Port Reinforcement
  • Airport Reinforcement
  • Landfill Reinforcement
  • Irrigation Project
  • Sea Reclamation Project

Dimensions 

ProductALATWLRWTRtLRtTRtJ
GG110026342.62.910.82.7
GG120026342.731.61.13.7
  • unit = mm

Specifications 

 

Index Properties

 

Test Method

 

Unit

GG1100GG1200
MD

Values

TD

Values

MD

Values

TD

Values

PolymerPP
Minimum Carbon BlackASTM D 4218%22
Tensile Strength @ 2% StrainASTM D 6637kN/m4.16.669
Tensile Strength @ 5% StrainASTM D 6637kN/m8.513.411.819.6
Ultimate Tensile StrengthASTM D 6637kN/m12.41919.228.8
Strain @ Ultimate StrengthASTM D 6637%13131313
Structural Integrity
Junction EffciencyGRI GG2%93939393
Overall Flexural RigidityASTM D 1388mg-cm250,000750,000
Aperture StabilityCOE Methodm-N/deg0.320.65
Dimensions
Roll Widthm3.95 or 5.953.95 or 5.95
Roll Lengthm7550

Biaxial Geogrid LA

Create better interlock effective for the case of larger size aggregate

Biaxial Geogrid is manufactured from Polypropylene. It is produced through the process of extruding, punching, heating, longitudinal stretching and transverse stretching.

Performance

  • High tensile strength at both longitudinal and transverse direction

Benefits

  • Improving bearing capacity of foundation
  • Preventing cracking and subsiding
  • Convenient to construct, reducing cost and maintaining expense

Application

  • Road Reinforcement
  • Expressway Reinforcement
  • Railway Reinforcement
  • Port Reinforcement
  • Airport Reinforcement
  • Landfill Reinforcement
  • Irrigation Project
  • Sea Reclamation Project

Dimensions  

ProductALATWLRWTRtLRtTRtJ
GG2020L5757661.20.93.5
GG3030L5757661.91.35
GG4040L575766326
  • unit = mm

Specifications

 

Index Properties

 

Test Method

 

Unit

GG2020LGG3030LGG4040L
MD

Values

TD

Values

MD

Values

TD

Values

MD

Values

TD

Values

PolymerPP
Minimum Carbon BlackASTM D 4218%222
Tensile Strength @ 2% StrainASTM D 6637kN/m7710.510.51414
Tensile Strength @ 5% StrainASTM D 6637kN/m141421212828
Ultimate Tensile StrengthASTM D 6637kN/m202030304040
Strain @ Ultimate StrengthASTM D 6637%131313131313
Structural Integrity
Junction EfficiencyGRI GG2%939393939393
Dimensions
Roll Widthm3.953.953.95
Roll Lengthm505050

Note: MD = Machine Direction; TD = Transverse Direction

HDPE Uniaxial Geogrid

Provide slope stablization for Retaining Wall System

HDPE Uniaxial Geogrid is manufactured from High Density Polyethylene. It is produced through the process of extruding, punching, heating and stretching.

Performance

  • High tensile strength
  • Low creep deformation

Benefits

  • Improving bearing capacity of retaining wall or dam
  • Extending the project life
  • Reducing floor area
  • Shortening construction period, reducing cost and maintaining expense

Application

  • Retaining Wall Reinforcement
  • Steep Slope Reinforcement
  • Dam Reinforcement

Dimensions

ProductALATWTRtLRtJ
GG60PE460121812.7
GG80PE46012181.23.3
GG120PE46012181.95.2
GG160PE46012182.36.2
GG180PE46012182.56.4
GG200PE46012182.66.5
  • Unit = mm

Specifications

Index PropertiesTest MethodUnitGG60PEGG80PEGG120PEGG160PEGG180PEGG200PE
MD Values
PolymerHDPE
Minimum Carbon BlackASTM D 4218%222222
Tensile Strength @ 2% StrainASTM D 6637kN/m162335475258
Tensile Strength @ 5% StrainASTM D 6637kN/m31446593104116
Ultimate Tensile StrengthASTM D 6637kN/m6080120160180200
Strain @ Ultimate StrengthASTM D 6637%11.511.511.511.511.511.5
Junction EfficiencyGRI GG2-87%939393939090
Flexural RigidityASTM D 1388mg-cm1,400,0002,300,0006,000,00019,000,000
Durability
UV ResistanceASTM D 4355%989898989898
Oxidation ResistanceEN ISO 13438%100100100100100100
BrittlenessWashDOT T926PassPassPassPassPassPass
Reduction Factor
Reduction Factor of Installation Damage (RFid)ASTM D5818111111
Reduction Factor for Creep of 114-year Design Life (RFcr)ASTM D52622.232.232.232.232.232.23
Dimensions
Roll Widthm1 or 21 or 21 or 21 or 21 or 21 or 2
Roll Lengthm1005050505050

Note: MD = Machine Direction

PP Uniaxial Geogrid

Maximum tensile strength is 300kN/m

PP Uniaxial Geogrid is manufactured from Polypropylene. It is produced through the process of extruding, punching, heating and stretching.

Performance

  • High tensile strength
  • High elastic modulus

Benefits

  • Improving bearing capacity of foundation, retaining wall and dam
  • Extending project life
  • Reducing floor area
  • Shortening construction period, reducing cost and maintaining expense

Application

  • Retaining Wall Reinforcement
  • Railway Reinforcement
  • Dam Reinforcement
  • Sea Reclamation Project

Dimensions

ProductALATWTRtLRtJ
GG60PP53014180.92.3
GG80PP53014181.12.6
GG110PP53014181.34
GG150PP53014161.86.3
GG260PP530141638.7
GG300PP53014163.49.8
  • Unit = mm

Specifications

PropertiesGG60PPGG80PPGG110PPGG150PPGG260PPGG300PP
Tensile Stength (kN/m)6080110150260300
Elongation Ratio≤10%≤10%≤10%≤10%≤10%≤10%
Strength at 2% Elongation (≥kN/m)1726324594105
Strength at 5% Elongation (≥kN/m)35486490185195
Roll Length (m)10010050505050
Roll Width (m)01-0301-0301-0301-0301-0301-03

PET Uniaxial Geogrid

PET Geogrid is manufactured from creep resistant, high-tenacity, multifilament polyester yarns, woven through warp knitted and coated with durable polymer which provides the best resistance of UV and durability.

Performance

  • High tensile strength
  • Low creep deformation

Benefits

  • Improving bearing capacity of foundation
  • Improving bearing capacity of retaining wall or dam
  • Extending the project life
  • Shortening construction period, reducing cost and maintaining expense

 

 

Property

 

Unit

 

40 x 20

 

60 x 20

 

80 x 30

 

100 x 30

 

120 x 30

 

150 x 30

 

200 x 30

 

250 x 30

 

300 x 30

 

Ultimate Tensile Strength (MD, Machine Direction)

 

kN/m

 

40

 

60

 

80

 

100

 

120

 

150

 

200

 

250

 

300

 

Ultimate Tensile Strength (Cross Machine Direction)

kN/m202030303030303030
Aperture Size 

mm

 

28×24

 

28×24

 

28×24

 

28×22

 

28×22

 

28×22

 

28×21

 

28×21

28×21
Reduction Factor & LTDS (Long Term Design Strength)
RFCR 120 Yrs Life 200C Temp1.461.461.461.461.461.461.461.461.46
RFCR 120 Yrs Life 400C Temp1.571.571.571.571.571.571.571.571.57
RFD pH = 4 to 91.101.101.101.101.101.101.101.101.10
RFID Sand/Silt/Clay1.101.101.101.101.101.101.101.101.10
RFID <38mm Gravel1.151.151.151.151.151.151.151.151.15
LTDS (Sand/Silt/Clay); pH=4-921.7532.6243.5054.3765.2581.55108.74136.00163.10
LTDS (Gravel <38mm); pH=4-920.8031.2041.6152.0062.4178.00104.01130.02156.00
 

Standard Roll Dimensions

Roll Length50/100 meter
Roll Width5 meter

 

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