Three-Dimensional Geogrid Cores The Perfect Combination Of Strength
And Drainage
Three-dimensional geogrid cores are a new type of geosynthetic
material, mainly made from high-density polyethylene (HDPE) as the
main raw material, combined with carbon black, ultraviolet
inhibitors, and antioxidants. They are manufactured through a
special extrusion molding process. This material has extremely high
rigidity and good drainage performance. At the same time, the
non-woven geotechnical fabrics with needle-punched holes attached
to both sides have good permeability, mechanical properties, and
chemical stability, as well as a high friction coefficient. This
allows three-dimensional geogrid cores to play an important role in
civil engineering.
Structural Features of Three-Dimensional Geotechnical Mesh Core
The unique three-dimensional structure of the three-dimensional
geotechnical mesh core allows it to withstand high compressive
loads throughout its use while maintaining a relatively thick
thickness, providing good water permeability. Its main features
include:
Thickness: The middle three-dimensional geotechnical mesh core typically
includes a thick vertical rib, as well as one oblique rib each at
the top and bottom.
Materials: Made primarily of high-density polyethylene (HDPE), providing
sufficient strength and durability.
Permeability: The three-dimensional geotechnical mesh core has high
permeability, capable of quickly draining groundwater from the
road.
Filtering and Protective Functions: The geotechnical fabric adhered to both sides provides
filtration, while the geotechnical net offers drainage and
protection.
Application Scope
Landfill
The three-dimensional geotechnical mesh core is widely used in
landfills. It can be used as a drainage layer and a permeability
testing layer to prevent leakage of the liner system and ensure the
safety of the landfill. Due to its high drainage performance, the
use of geosynthetic composite drainage mesh is not limited by the
slope of the side.
Highway and Railway Drainage
The three-dimensional geotechnical mesh core is also widely used in
the drainage systems of highways and railways. It can be used as a
drainage layer for roadbeds and road surfaces, helping to quickly
drain rainwater and reduce road damage caused by waterlogging. In
addition, it can also be used for tunnel drainage and underground
structure drainage.
Retaining Wall Drainage
The three-dimensional geotechnical mesh core can also be used as a
drainage layer for retaining walls, helping to drain water behind
the wall, preventing soil settlement, and improving the stability
of the retaining wall.
Summary
In summary, three-dimensional geotechnical mesh cores, as
high-performance geosynthetic materials, possess excellent
drainage, filtration, and protection functions. They are widely
used in various civil engineering projects. Their unique design and
material selection make them the preferred material for addressing
drainage issues under complex geological conditions.
Product Specification and Technical Index
| Drainage network core | Specification |
| Unit Weight(g/m2) | 750 | 1000 | 1300 | 1600 | 1800 |
| Thickness(OV=20pa, mm) | 5.0 | 6.0 | 7.0 | 7.6 | 8.0 |
| Hydraulic Conductivity(m/s) | K×10-4 | K×10-4 | K×10-3 | K×10-3 | K×10-3 |
| Elongation Rate(%) | < 50 | < 50 | < 50 | < 50 | < 50 |
| Tensile Strength(core network, KN/m) | 8 | 10 | 12 | 13 | 14 |
| Geotextiles(g/m2) | 200-200 | 200-200 | 200-200 | 200-200 | 200-200 |
(CJ/T 452—2014)
| Project | Index |
| Geotechnical drainage network | Geotechnical composite drainage network |
| Density/(g/cm³) | ≥0.939 | — |
| Carbon Black Content (%) | 2~3 | — |
| Longitudinal Tensile Strength/(KN/m) | ≥8.0 | ≥16.0 |
| Longitudinal Hydraulic Conductivity (Normal Load 500KPa, Hydraulic
Gradient 0.1)/(㎡/s) | ≥3.0×10-3 | ≥3.0×10-4 |
| Peel Strength/(KN/m) | — | ≥0.17 |
| Mass Per Unit Area Of Geotextile/(g/㎡) | — | ≥200 |
