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Geogrids

POLYPROPYLENE BIAXIAL GEOGRID

Features:

Polypropylene Biaxial Geogrid
  • High tensile strength polymer grids that improve the bearing capacity of aggregate base materials supporting paved and unpaved roadway surfaces.
  • Prevent cracking and subsidence by increasing the vertical stress distribution of unbound base aggregates.
  • Manufactured from polypropylene using extrusion, punching, heating, longitudinal and transverse stretching.

Performance:

  • High tensile strength in both the transverse and longitudinal directions.
  • Lateral stability is achieved by the geogrids restraining the lateral and vertical deformation of the aggregate
  • Reinforcement is generated by the application of vertical stress that causes lateral and vertical deformation of the aggregate and the geogrids.

Typical Values:

Property Test Method Unit GG1515
(MD  TD)
GG2020
(MD  TD)
GG3030
(MD  TD)
GG4040
(MD  TD)
Polymer     PP PP PP PP
Minimum Carbon Black ASTM D
4218
% 2 2 2 2
Tensile Strength @ 2% Strain ASTM D
6637
kN/m 5  5 5  5 10.5  10.5 14  14
Tensile Strength @ 5% Strain ASTM D
6637
kN/m 7  7 14  14 21  21 28  28
Ultimate Tensile Strength ASTM D
6637
kN/m 15  15 20  20 30  30 40  40
Strain @ Ultimate Strength ASTM D
6637
% 13  10 13  10 13  10 13  10
Structural Integrity  
Junction Efficiency GRI GG2 % 93 93 93 93
Flexural Rigidity ASTM D
1388
mg-cm 700,000 1,000,000 3,500,000 10,000,000
Aperture Stability COE Method mm-N/deg 646 707 1432 2104
Dimensions  
Aperture   mm 38  36 38  36 36  34 36  34
Minimum Rib Thickness ASTM D
1777
mm 0.9  0.7 1.3  1.0 2.1  1.8 2.1  1.6
Roll Width   m 3.95 3.95 3.95 3.95
Roll Length   m 50 50 50 50
Roll Weight   kg 39 50 72 105

MD = Machine Direction

TD = Transverse Direction

 

HDPE UNIAXIAL GEOGRID

Features:

HDPE Uniaxial Geogrid

♦ High strength polymer grids that provide efficient slope stabilization for retaining walls, highways and steep slopes.

♦ Manufactured from high density polyethylene using extrusion, punching, heating and longitudinal stretching.

♦ Resistant to biological degradation and chemical attack.

♦ Anti-oxidants offer enhanced resistance to aging caused by oxidation.

♦ Carbon black enhances resistance to degradation by UV radiation.

♦ Performance not affected by environmental stress cracking.

Performance:

♦ High tensile strength

♦ Low creep deformation

Typical Values:

Property Test Method Unit GG60PE
(MD)
GG80PE
(MD)
GG120PE
(MD)
GG160PE
(MD)
Polymer     HDPE HDPE HDPE HDPE
Minimum Carbon Black ASTM D
4218
% 2 2 2 2
Tensile Strength @ 2% Strain ASTM D
6637
kN/m 16 23 35 47
Tensile Strength @ 5% Strain ASTM D
6637
kN/m 31 44 65 85
Ultimate Tensile Strength ASTM D
6637
kN/m 60 80 120 160
Strain @ Ultimate Strength ASTM D
6637
% 10 10 10 10
Flexural Rigidity ASTM D
1388
mg-cm 1,400,000 2,300,000 7,700,000 19,000,000
Durability  
UV Resistance ASTM D
4355
% 98 98 98 98
Flexural Rigidity EN ISO
13438
% 100 100 100 100
Oxidation Resistance WashDOT
T926
  Pass Pass Pass Pass
Dimensions  
Roll Width   m 1 1 1 1
Roll Length   m 75 50 30 20
Roll Weight   kg 34 30 26 33

MD= Machine Direction

 

PP UNIAXIAL GEOGRID

 

Properties TGDG
PP35
TGDG
PP50
TGDG
PP80
TGDG
PP110
TGDG
PP150
TGDG
PP200
TGDG
PP260
Ultimate Warp Tensile
Strength >= (kN/m)
35 50 80 110 150 200 260
Yield Elongation (%<=) 10
Tensile strength at 2%
elongation >= (kN/m)
10.0 12.0 26.0 32.0 45.0 70.0 90
Tensile strength at 5%
elongation >= (kN/m)
22.0 28.0 48.0 66.0 90.0 120.0 180.0
Length (m) 100 50 30
Width (m) 1000-4000+10 2000-3000

 

POLYESTER GEOGRIDS

Polyester Geogrids

Applications

  • Reinforcement of road, railways and bridges to prevent cracks and increase roadbed strength
  • Reinforcement and stabilization of embankments and slopes
  • Reinforcement of soft ground to even out stress, adjust sedimentation and increase stability and loading

Features

  • Knitted from high tensile strength polyester yarns and coated with PVC for protection

Performance

  • Polyester geogrids possess high elastic modulus resulting in low strains and strong resistance to mechanical damage and chemical and biological degradation
  • Deliver high tenacity and high occlusive force with soil or gravel
  • Erosion-resistant, free draining and light weight
  • Enhance isolation, inhibit ground deformation, prevent cracking by reflection and increase the strength of the roadbed.

Typical Values

  • Other tensile strength combinations can be made to order
Property GG30PET GG60PET GG100PET GG120PET GG150PET GG200PET
Polymer Polyester (PET)
MD Tensile Strength(kN/m) 30 60 100 120 150 200
TD Tensile Strength(kN/m) 30 60 100 120 150 200
Elongation < % 13
Mesh Size (mm) 25.4 x 25.4
Roll Width (m) 1 ~ 6
Length (m) 50 ~ 300
Temperature Resistance (oC) -100 ~ 280
Glue Type PVC

MD = Machine Direction

TD = Transverse Direction

 

composite geogrids

Yuan Da’s composite geogrids are designed to stabilize soils where a both reinforcing and separation between a granular base and very fine soil is required. The geocomposite binds closely to the soil being reinforced, separates different soil types and provides an effective filter action.

These composite geogrids are made by bonding a nonwoven geotextile to a polypropylene geogrid. They have both a high tensile strength and modulus of elasticity, resist damage during installation, and weathering by the atmosphere.