TGDG 50-50 KN Road Railway Construction High Strength Polypropylene
Uniaxial Plastic Geogrid
Uniaxial Plastic Geogrid Introduction
- Unidirectional geogrid is made of high molecular polymer (PP or
HDPE) extruded into thin plates, punched into regular mesh, and
then stretched longitudinally. In this process, the polymer is in a
linear state, and a long elliptic network structure with uniform
distribution and high node strength is formed. Uniaxial tensile
geogrid is a kind of high strength geosynthetics.
- Unidirectional tension geogrid is a kind of high strength
geomembrane with high polymer as main raw material, adding certain
anti ultraviolet and anti-aging AIDS, and unidirectional stretching
to make the original scattered chain molecules rearranged in a
linear state, extruded into thin sheets, then punching regular
holes, and then longitudinally stretched. In this process, the
polymer is in a linear state, and a long elliptic network structure
with uniform distribution and high node strength is formed.
Uniaxial Plastic Geogrid Specification
| Properties | GG60PP | GG80PP | GG110PP | GG150PP | GG260PP | GG300PP |
| Tensile Strength (kN/m) | 60 | 80 | 110 | 150 | 260 | 300 |
| Elongation Ratio | ≤10% | ≤10% | ≤10% | ≤10% | ≤10% | ≤10% |
| Strength at 2% Elongation (≥kN/m) | 17 | 26 | 32 | 45 | 94 | 105 |
| Strength at 5% Elongation (≥kN/m) | 35 | 48 | 64 | 90 | 185 | 195 |
| Roll Length (m) | 100 | 100 | 50 | 50 | 50 | 50 |
| Roll Width (m) | 1-3 | 1-3 | 1-3 | 1-3 | 1-3 | 1-3 |
Uniaxial Plastic Geogrid Features
Uniaxial plastic geogrid is specially designed for soil
reinforcement. It is manufactured with High Density Polyethylene
resins or polypropylene, from the process of extruding and
longitudinal stretching. It has high tensile strength, excellent
interlock capacity, and low creep deformation. High quality
uniaxial plastic geogrid has High tensile strength, good creep
performance, convenient construction, low price.
Plastic Uniaxial Geogrid Applications
Plastic uniaxial geogrid is the kind of high strength geosynthetic
material which can be used for any soil stabilization and
reinforcement applications. The uniaxial plastic geogrid can bears
alternating loads in the foundation and surface layer of road, it
can also reduce the settlement of road surface and improve the
self-support capacity of the soil. The uniaxial plastic geogrid can
reduce the pressure of the retaining wall and extend the service
life. Plastic uniaxial geogrid is widely used in dams, tunnels,
piers, roads, railways, construction and other fields.
Editing of construction points
- Construction site: it is required to compact and level, and remove
the sharp protuberances.
- Grid laying: on the flat and compacted site, the main stress
direction (longitudinal) of the grid installed and laid shall be
vertical to the axis of the embankment, and the laying shall be
flat without wrinkles, and shall be tensioned as far as possible.
The main stress direction of the laid grid is the full length
without joint. The connection between the width and width can be
bound and overlapped manually, and the lap width is not less than
10 cm. If the grid is more than two layers, the joints between
layers shall be staggered. After large area laying, the flatness
shall be adjusted as a whole. After filling a layer of soil and
before rolling, the grid should be tensioned again by manual or
machine tools, and the force should be uniform to make the grid in
the soil in a straight stress state.
- Selection of filler: the filler shall be selected according to the
design requirements. It has been proved by practice that except
frozen soil, swamp soil, domestic garbage, chalk soil and
diatomite, they can be used as fillers. However, gravel soil and
sand soil have stable mechanical properties and little affected by
water content, so they should be preferred. The particle size of
filler shall not be greater than 15cm, and the grading of filler
shall be controlled to ensure the compaction weight.
- Paving and compaction of filling materials: when the grid is laid
and positioned, it shall be filled and covered in time, and the
exposed time shall not exceed 48 hours. The flow operation method
of laying and backfilling can also be adopted. First pave the
filler at both ends, fix the grid, and then push forward to the
middle. The rolling sequence is from two sides to the middle.
During rolling, the roller can not directly contact with the
reinforcement material, and the vehicle is not allowed to drive on
it for fear of dislocation of reinforcement material. The
compaction degree of each layer is 20-30cm. The compactness must
meet the design requirements, which is also the key to the success
or failure of reinforced soil engineering.
- Waterproof and drainage measures: in reinforced soil engineering,
the drainage treatment inside and outside the wall must be done
well; the foot protection should be done to prevent erosion; the
filtration and drainage measures should be set in the soil, and if
necessary, the geotextile and permeable pipe (or blind ditch)
should be set. Drainage should be conducted in a way that can not
be blocked, otherwise hidden dangers will occur
