Summary: geogrid is a special geosynthetics material, has the unique reinforcement
effect, commonly used as the reinforcement material of reinforced soil structure or the
reinforcement material of composite material.
Form and classification
1、Geogrid according to different manufacturing methods, divided into stretch plastic
geogrid (one-way stretch plastic geogrid and two-way stretch plastic geogrid),
composite filter type geogrid, steel-plastic composite geogrid, high strength PP
geotechnical belt warp knitting stick welding grille, glass fiber warp knitting geogrid
and the warp knitting polyester geogrid and so on five big classes.Among them:
#1 Plastic stretching geogrid: plastic geogrid with high density polyethylene (HDPE) or
polypropylene (PP) as the main raw material.It is divided into unidirectional plastic
geogrids and bidirectional plastic geogrids.Standard GB/T 17689-2008.
#2 Anti-filter composite geogrid: the non-woven geotextiles and plastic stretching geogrid
are formed into composite integral products through heat fusion composite technology.
#3 Steel-plastic composite geogrid: the reinforced core material is made of high strength
steel wire (or other fibers), which is coated with reinforced core material by polyethylene
(PE) melting and extrusion.
#4 Glass fiber geogrid: a kind of geogrid-composite material made of woven fabric with glass
fiber as material.Execute standard GB/T 21825-2008.
#5 Warp knitted terylene geogrid: a planar network geogrid made of high-strength polyester
terylene filament, woven into a grid fabric by longitudinal and latitudinal direction, and
coated with PVC or styrene rubber.Execute standard JT/T 480-2002.
#6 High-strength PP tape bonded grille: the product is made of polypropylene resin through
plasticizing extrusion, traction, hot air stretching, embossing device, cooling and shaping.
According to the arrangement mode of longitudinal and transverse stiffening belts, it can
be divided into rectangular high-strength PP tape warp weaved geogrid and special
high-strength PP tape warp weaved geogrid.Execute standard JT/T 480-2002.
2、 Geogrid can be divided into: high density polyethylene unidirectional plastic stretching
geogrid, polypropylene unidirectional plastic stretching geogrid, polypropylene bidirectional
stretching plastic geogrid, polyethylene + steel composite geogrid, polyester polyester warp
knitting geogrid, glass fiber warp knitting geogrid.
3、Geogrid can be divided into supporting structure geogrid, embankment slope geogrid and
foundation treatment geogrid.
#1 Geogrid for supporting structure: a geogrid for supporting structure of reinforced soil on
subgrade.Mainly USES the unidirectional stretching plastic geogrid.
#2 Geogrids on embankment slopes: the geogrids used for laminating embankment slopes and
compacting to prevent shallow sliding.It mainly includes two - way stretch plastic geogrids
and two - way warp - knitting polyester geogrids.
#3 Foundation treatment geogrids: geogrids used in foundation treatment of bedding to coordinate
stress and deformation.Mainly includes steel and plastic composite geotextiles.