Civil Engineering Construction Uniaxial Geogrid For Retaining Wall
Uniaxial Plastic Geogrid Introduction
Polyethylene uniaxially stretched geogrid is made of high-density
polyethylene (HDPE) as raw material, plasticized, extruded,
punched, heated, and stretched. Through stretching, the originally
scattered chain-shaped molecules are reoriented to a linear state,
which fully improves the tensile strength and rigidity of the grid.
Laying it in the soil, through the occlusion and interlocking
between the grid mesh and the soil, a stress transmission mechanism
is formed, so that the local load can quickly and effectively
spread to a large area of soil, thereby achieving The purpose of
reducing local damage stress and increasing the service life of the
project.
The outstanding advantage of polyethylene uniaxially stretched
geogrid is that it has little tendency to deform (creep) under
long-term continuous load, and its creep resistance is much better
than other geogrids, which is important for improving the service
life of the project. effect.
This product is suitable for the construction of roads, railways
and reinforced retaining walls, dams, bridge decks, steep slopes
and geocells on the coast of rivers and lakes. Its function is to
increase the bearing capacity of the retaining wall or dam, extend
the service life, reduce the floor space, shorten the construction
period, reduce the construction cost, and reduce the maintenance
cost.
The unidirectionally stretched geogrid is formed by extruding a
high molecular polymer into a thin plate, punching a regular mesh,
and then stretching it longitudinally. In this process, the polymer
becomes a oriented linear state and forms an oblong network
integral structure with uniform distribution and high node
strength. This kind of structure has quite high tensile strength
and tensile modulus, especially our company's products of this kind
have a high early stage (elongation rate of 2%-5%) tensile strength
and tensile modulus that exceed the international level. . It
provides the soil with an ideal interlocking system for bearing and
spreading forces. The product has high tensile strength
(>150Mpa), adapts to various soils, and is currently a widely
used reinforcement material.
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 Feature
1. The polymer is in the shape of a directional line, forming a
long oval network structure with uniform distribution and high node
strength. This structure has quite high tensile strength and
rigidity, and provides ideal bearing capacity and diffusion
interlocking system for the soil.
2. The outstanding advantage of unidirectional plastic geogrid is
that it has a small tendency to deform (creep) under long-term
continuous load, and its creep resistance is much better than other
materials, which plays an important role in improving the service
life of the project.
3. The occlusion and interlocking of the grid and the soil
constitutes an efficient stress transmission mechanism, which
enables the local load to be quickly and effectively spread to a
large area of soil, thereby reducing local damage stress and
increasing the service life of the project.
Plastic Uniaxial Geogrid Fuction
1. One-way geogrid is used to reinforce weak foundations: Geogrids
can quickly increase the bearing capacity of foundations, control
the development of settlement, and confine the road base to
effectively distribute the load to a wider base. Thereby reducing
the thickness of the base layer, lowering the project cost,
shortening the construction period and prolonging the service life.
2. One-way geogrid is used to reinforce asphalt or cement pavement:
the geogrid is laid on the bottom of asphalt or cement pavement,
which can reduce rutting depth, prolong the fatigue life of the
pavement, and reduce the thickness of asphalt or cement pavement to
save cost.
3. The unidirectional geogrid is used to reinforce the embankment
dam and the retaining wall: the traditional embankment, especially
the high embankment, often needs to be overfilled and the edge of
the shoulder is not easy to compact, which will cause the slope to
be flooded and collapsed in the later stage. The phenomenon of
instability occurs from time to time, and at the same time, a
gentle slope is required, which covers a large area, and the
retaining wall has the same problem. The use of geogrids to
reinforce the embankment slope or retaining wall can reduce the
area occupied by half. Area, extend the service life, reduce the
cost by 20-50%.
4. Unidirectional geogrid is used to reinforce rivers and sea
dikes: it can be made into stone cages, and then used together with
grids to prevent the dam from being washed by seawater and cause
collapse. The stone cages are permeable, can slow down the impact
of waves, prolong the life of the dam, and save Manpower and
material resources shorten the construction period.
5. One-way geogrid is used to treat garbage landfills: the
combination of geogrid and other soil composite materials to treat
garbage landfills can effectively solve the problems of uneven
foundation settlement and derived gas emissions, and can maximize
The storage capacity of the landfill.
Uniaxial Plastic Geogrid Usage
It is suitable for all kinds of roads, railway lines, and airport
subgrade projects to improve ground improvement.
It is suitable for permanent installation of subgrade improvement
such as large and medium-sized underground parking lots and port
freight stations.
The slopes of railway lines and roads can be used for greening.
The available tunnels are improved.
It is suitable for the secondary increase of the steep slope after
the one-way extension of the geogrid is raised to further increase
the steep slope and avoid soil erosion.
Mine mining, pit structure reinforcement
Construction method of one-way geogrid:
Excavate the foundation bed, set up a sand cushion (the height
difference is not more than 10cm), roll it into a platform, and lay
a grid. The longitudinal axis should be consistent with the main
force direction, and the longitudinal overlap should be 15-20cm,
the lateral 10cm, and the overlap Bind it with plastic tape, and
fix it on the ground with U-shaped nails every 1.5-2m on the laid
grid. The laid geogrid should be backfilled with earth material in
time. The number of layers of the laid geogrid depends on the
technical requirements. The construction process requirements of
the geogrid: the paving surface of the geogrid should be relatively
flat. After the paving layer has passed the experience, in order to
prevent the longitudinal skew phenomenon, first draw a white line
or hanging line on the paving layer according to the width. You can
start paving, and then use iron nails to fix the ends of the grille
(8 nails per meter width, fixed at a uniform distance). After
fixing the ends of the grille, use a paving machine to slowly pull
the grille forward, and manually tighten and straighten it every 10
meters long until one roll of grille is finished, and then another
roll is laid. The operation is the same as before. After laying a
roll, use a 6T-10T roller from the starting point to roll it in the
forward direction. (If paving on the middle layer and leveling
layer, it is better to use a steel roller roller; if the grating is
directly laid on the concrete pavement, it is better to use a
rubber roller roller.) For the section length, after the section
length of the grid should be paved, check the paving quality as a
whole, and then pave the next section. When laying the next
section, the grid and the grid can be overlapped with a length of
10-15CM, and fixed with iron nails or wooden wedges, and then
continue to pave the second section in the forward direction. By
analogy, the operation requirements are the same as before.
Company introduction:
Hengquan company was established in 2013, has become one of the
leading and professional manufacture of many kinds of Geosynthetics
and wire mesh.
(such as:Geocell,Geotextile,Geomembrane, Geogrid,, ,Gabion
box,Welded wire mesh panel) in the world market. We got quality
control to make sure every product be in good quality, which can
make sure that any bad products will not sent to clients.
We got customers from American, Canada, Russia,Gemany and over 20
countries and enjoy good reputation.
Welcome to contact.
Leo
Manager of Hengquan company
Phone/Whatsapp/Wechat: +8615030705799