Geogrids
Geogrids are characterized by their large opening size. Some geogrids
are made from punched sheets that are drawn to align the polymer
molecules. Other geogrid constructions are formed by welding together
oriented strands or by weaving or knitting yarns and coating them
to form a grid configuration. |
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SF
SERIES SOIL REINFORCEMENT GEOGRID
The SF Series Geogrid is composed of high-tenacity multifilament yarns
of high molecular weight polyester that are woven into a stable network
placed in tension. The high strength polyester yarns are coated with
a PVC material. SF Geogrids are inert to biological degradation and
are resistant to naturally encountered chemicals, alkalis and acids.
SF Geogrids are typically used for soil reinforcement applications
such as retaining walls, steepened slopes, embankments, sub-grade
stabilization, embankments over soft soils, and waste containment
applications.
The flexibility in both manufacturing and product selection makes
SF Geogrids "the next generation" of polyester soil enforcement
grids.
The standard geogrids product range, combined with STF's ability to
manufacture specialty site specific geogrids allows the engineer flexibility
in the design of soil reinforcement structures. For example, SF Geogrids
would aid in the design of a void bridging application where tensile
strength requirements are high in both directions of the geogrid.
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INSTALLATION
Installation of SF Geogrid is quick and easy. Because of the product's
light weight and flexibity, no special tools or equipment are required.
Simply, lay out the geogrid, measure it to the required length, and
cut it with a utility knife or scissors. When installed, SF Geogrid
lays flat. It will not recoil, even in cold weather. |
| SYNTEEN
SF SERIES SOIL REINFORCEMENT GEOGRID |
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PAVEMENT
STRUCTURES
SYNTEEN
BASE COURSE REINFORCEMENT
SUBGRADE
IMPROVEMENT BIAXIAL GEOGRID
SF 11 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
TENSILE STRENGTH
OF AGGREGATE
1. SF 11
geogrid will reduce applied vertical pressure of heavy loads
at depth of aggregate by spreading the load over a wider area.
SF
11
| REINFORCEMENT
PROPERTIES |
TEST
METHOD |
MARV
VALUES
lbs/ft
kN/m |
| Ultimate
Strength |
MD
XMD |
ASTM-6637 |
2388
3870 |
34.9
56.5 |
| Initial
Modulus |
MD
XMD |
ASTM-6637 |
178,000
172,900 |
2598
2524 |
| Load
at 2% Strain |
MD
XMD |
ASTM-6637 |
526
578 |
7.68
8.43 |
| Load
at 5% Strain |
MD
XMD |
ASTM-6637 |
1042
792 |
15.2
11.5 |
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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 |
401
490 |
5.8
6.5 |
| 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 |
MD
1.0 in.
XD 1.0
in. |
SF
12
| 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
1367 |
15.2
19.9 |
|
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 |
|
Measured |
MD
1.0 in.
XD 1.0
in. |
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| Phone: 617-965-0007 |
Fax: 617-965-0097 |
| Toll Free: 1-800-770-BOOM |
Email: sales@boomenviro.com |
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| Factory Location: |
| 1 Coffin Avenue |
| New Bedford, MA 02746 |
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| BOOM Environmental Products®is a registered trademark of Geotechnical Supply, Inc. |
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