SYNTEEN BASE COURSE REINFORCEMENT

SUBGRADE IMPROVEMENT BIAXIAL GEOGRID

SF 13 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.

SF13 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

INCREASE TENSILE STRENGTH OF AGGREGATE

  1. SF 13 geogrid will reduce applied vertical pressure of heavy loads at depth of aggregate by spreading the load over a wider area.

REINFORCEMENT PROPERTIES

TEST METHOD

MARV VALUES

lbs/ft          kN/m

Ultimate Strength

MD

XMD

ASTM-6637

2388

5268

34.9

76.8

Initial Modulus

MD

XMD

ASTM-6637

178,000

235,000

2598

3432

Load at 2% Strain

MD

XMD

ASTM-6637

526

797

7.7

11.6

Load at 5% Strain

MD

XMD

ASTM-6637

1042

1278

15.2

17.0

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


Load at 2% Strain

MD (GP)

MD (SW)

ASTM 6637 + ASTM 5818

438

496

6.3

7.2

Load at 2% Strain

XMD (GP)

XMD (SW)

ASTM 6637 + ASTM-5818

664

752

9.7

11.0

Load at 5% Strain

MD (GP)

MD (SW)

ASTM 6637 + ASTM-5818

868

983

12.6

14.3

Load at 5 % Strain

XMD (GP)

XMD (SW)

ASTM 6637 + ASTM-5818

940

1065

13.7

15.5

Coefficient of Pullout Interaction

ASTM 6706

Sandy Gravel

Sand

Ci= 1.0

Ci= 1.0

Aperture Size*

Minimum Rib Thickness

Measured

Measured

MD   1.0 in.

XD    1.0 in.

MD    0.05in.

XD     0.05in.

* Synteen has the capability to make apertures to specific sizes

GP= Poorly Graded Gravel

SW= Well Groomed Gravel

Standard roll size: 12’ x 150’. STF can produce Master Roll lengths as well.