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SYNTEEN SF12
BASE COURSE REINFORCEMENT
SUBGRADE IMPROVEMENT BIAXIAL GEOGRID
SF12 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.
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SF12 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. SF12 geogrid will reduce applied vertical pressure of heavy loads at depth of aggregate by spreading loads over a wider area.
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REINFORCEMENT PROPERTIES |
TEST METHOD |
MARV VALUES
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Ultimate Strength |
MD
XMD |
ASTM 6637 |
2,388
5,268 |
34.9
76.8 |
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Initial Modulus |
MD
XMD |
ASTM 6637 |
178,000
235,000 |
2,598
3,432 |
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Load at 2% Strain |
MD
XMD |
ASTM 6637 |
526
797 |
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2% Secant Moduli
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MD
XMD |
ASTM 6637 |
26,300
39,850 |
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Load at 5% Strain |
MD
XMD |
ASTM 6637 |
1,042
1,367 |
15.2
19.9 |
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5% Secant Moduli
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MD
XMD |
ASTM 6637 |
20,840
27,340 |
304
398.8 |
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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). |
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Load at 2% Strain |
MD (GP)
MD (SW) |
ASTM 6637 & ASTM 5818 |
438
496 |
6.3
7.2 |
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Load at 2% Strain |
XMD (GP)
XMD (SW) |
ASTM 6637 & ASTM 5818 |
664
752 |
9.7
11.0 |
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Load at 5% Strain |
MD (GP)
MD (SW) |
ASTM 6637 & ASTM 5818 |
868
983 |
12.6
14.3 |
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Load at 5 % Strain |
XMD (GP)
XMD (SW) |
ASTM 6637 & ASTM 5818 |
940
1,065 |
13.7
15.5 |
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Coefficient of Pullout Interaction
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ASTM 6706
Sandy Gravel
Sand |
Ci = 1.0
Ci = 1.0
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Aperture Size * |
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Measured |
MD 1.0 in.
XMD 1.0 in. |
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Rib Thickness
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Measured |
MD .04 in.
XMD .06 in. |
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* Synteen has the capacity to produce 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.
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Click here to download the PDF
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