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
- Prevents lateral spreading of the base or sub-base aggregate
- Allows for shear interaction to develop between the aggregate and the geogrid
INCREASED TENSILE STRENGTH OF AGGREGATE
- 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