BASE COURSE REINFORCEMENT

SUBGRADE IMPROVEMENT BIAXIAL GEOGRID

SF11 is composed of high molecular weight, high tenacity multifilament polyester yarns that are woven into a stable network placed under tension. The high strength polyester yarns are coated with a polymer coating. SF Geogrids are inert to biological degradation and are resistant to naturally encountered chemicals, alkalis and acids.

SF11 INCREASES THE SERVICE LIFE OF PAVEMENT STRUCTURES BY IMPROVING:

CONFINEMENT OF BASE COURSE

  1. Prevents lateral spreading of the base or sub-base aggregate
  2. Allows for shear interaction to develop between the aggregate and the geogrid

INCREASED TENSILE STRENGTH OF AGGREGATE

  1. SF11 geogrid will reduce applied vertical pressure of heavy loads at depth of aggregate by spreading loads over a wider area.

REINFORCEMENT PROPERTIES

TEST METHOD

MARV VALUES

Lbs/ftkN/m

Ultimate Strength

MD

XMD

ASTM 6637

2,388

3,870

34.9

56.5

Initial Modulus

MD

XMD

ASTM 6637

178,000

172,900

2,598

2,524

Load at 2% Strain

MD

XMD

ASTM 6637

526

578

7.7

8.4

2% Secant Moduli

 

MD

XMD

ASTM 6637

26,300

28,900

383.6

421.5

Load at 5% Strain

MD

XMD

ASTM 6637

792

1,042

11.5

15.2

5% Secant Moduli

 

MD

XMD

ASTM 6637

15,840

20.840

231

304

True in place strength after site damage testing based on TRI method of “installation” damage testing with poorly graded gravel (GP) and well groomed gravel (SW).

Load at 2% Strain

MD (GP)

MD (SW)

ASTM 6637 & ASTM 5818

401

490

5.9

6.6

Load at 2% Strain

XMD (GP)

XMD (SW)

ASTM 6637 & ASTM 5818

521

570

7.6

8.3

Load at 5% Strain

MD (GP)

MD (SW)

ASTM 6637 & ASTM 5818

795

972

11.6

14.1

Load at 5 % Strain

XMD (GP)

XMD (SW)

ASTM 6637 & ASTM 5818

715

781

10.4

11.4

Coefficient of Pullout

Interaction

 

 

 

 

 

 

ASTM 6706

Sandy Gravel

 

Sand

Ci = 1.0

 

Ci = 1.0

 

Aperture Size *

 

Measured

MD1.0 in.

XMD1.0 in.

* Synteen has the capacity to produce apertures to specific sizes.

Standard Roll Size: 12’ x 150’. STF can produce master roll lengths as well.

GP = Poorly Graded Gravel

SW = Well Groomed Gravel