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The method suitable for the trend of eco-friendly construction methods has been rapidly increasing worldwide.
Geocell has been established in 1975 by the US Corps of Engineers and PRESTO of geotxtiles manufacturer for the purpose of making emergency roads for military use. This technique has been preferred and increased rapidly worldwide as a suitable method for the trend.
# Geocell Type
Geocell is a honeycomb three-dimensional geosynthetic reinforcement material that is filled with a filling material in the unit cell.
It increases the tensile and binding strength that the soft ground does not have, therefore it can increase the pullout resistance and friction coefficient.
It uses the filling materials such as soil and gravel, not concrete and other artificial materials, and has stable characteristics. It is structurally durable and simple to construct that can reduce the air and cost.
Geocell soft ground reinforcement is consisted of soil (filling material) against external force, frictional resistance, passive resistance of neighboring cells and circular stress of cells.
It also has a high horizontal pitch, therefore it can make suppression effect on the groundwater level Increasing shearing strength and bearing power.
It is a method to cover slopes by laying plant material, stone filling, fluid concrete or mortar in the cell of honeycomb fiber material for civil engineering.
It can change the type of covering materials of flow velcocity and shorten the construction period by the simplicity of construction.
(Ministry of Land, Transport and Maritime Affairs River Design Standards and Commentary)
- BMK Geocell is a high-performance product that has been reliably evaluated by various items over a long period of time and recognized by the FITI Test Institute.
- BMK geocells have dramatically improved the problem using BMK’s specialized connectors to reduce the strength problem occurred by cutting or connecting areas.
# Reliability evaluation result of BMK-CELL HDPE 100% 1.2T
Test Researcher Reliability Evaluation Report (Jan 22, 2019)
| Evaluation item | unit | evaluation result | test method | |
|---|---|---|---|---|
| Tensile Shearing Strength | kN/m | 9.79 | KS K ISO 13426-1 | |
| Tensile Shearing Strain Rate | % | 10.1 | ||
| Peeling Strength | kN/m | 7.26 | ||
| eeling Elongation | % | 27.0 | ||
| Carbon Black Content | % | 2.130 | ASTM D1603 | |
| Hydrolysis resistance | Tensile shearing strength retention | % | 99.0 | BS EN 12447 KS K ISO 13426-1 |
| Peeling strength retention | % | 99.9 | ||
| Liquid resistance | Tensile shearing strength retention | % | 99.7 이상 (H2SO4) 96.2 이상 (Ca(OH)2) | KS K ISO TR 12960 KS K ISO 13426-1 |
| Peeling strength retention | % | 93.1 이상 (H2SO4) 99.8 이상 (Ca(OH)2) | ||
| Oxidation resistance | Tensile shearing strength retention | % | 94.3 | KS K ISO 13438 KS K ISO 13426-1 |
| Peeling strength retention | % | 95.2 | ||
| UV resistance | Tensile shearing strength retention | % | 99.7 | BS EN 12224 KS K ISO 13426-1 |
| Peeling strength retention | % | 86.3 | ||
| Weather resistance | Tensile shearing strength retention | % | 99.4 | KS K 0746 KS K ISO 13426-1 |
| Peeling strength retention | % | 96.4 | ||
# Bonding strength test result of BMK-CELL connector
Test Researcher Reliability Evaluation Report (Jan 22, 2019)
| Section | Bonding Strength (kN/m) | ||
|---|---|---|---|
| Bolted Fasteners (Bolt Type) | Bolted Fasteners (Cropped Type) | Cable Tie | |
| Average aggregated strength | 8.32 | 11.77 | 2.20 |
| Aggregated rate(%) | 59.4 | 84 | 15.7 |
# Geocell application
1.Reinforcement of rivers (waterways) and filling slopes
Geocell's high drainage capacity, friction and cell-soil-plant interactions prevent sliding slopes
and limit the effects of shearing stress.
Perforation of geocell sheet surface promotes horizontal drainage,
plant growth and root interlocking to stabilize slope and
soil further and increase vegetation rate.
- River slopes, River waterway
- Cutting area, Filling slope
- Ecological river creation
- Landfill, Pond
2. Soft ground and road (rail) reinforcement
Since Geocell forms a high rigidity rigid foundation and minimizes displacement and
settlement by loads, it has been applied to reinforce roads, railroads, etc.
Compared to the general road design method, the gravel base thickness can be
reduced by about 50% or more and the long-term performance can be improved.
- Pavement of a road
- Walkway, Trail, Cart Road
- Parking lot, Playground
- Railway, Soft Ground Temporary Road
- Building foundation and Seismic
reinforcement
3. Retaining Walls and Earth Structures
It can withstand deformation of the ground without losing its structural prototype and
can be used as an unstructured whole body or vegetation by the flexibility of
the Geocell itself. It can take full advantage of the system since the construction
method is simple and efficient,
it can be used in the site with limited construction
conditions.
It can also finish various materials other than
vegetation.
- Reinforced soil, substitute for concrete
retaining wall - Cutting area, Fill Steep Slope Reinforcement
- Ecological River Creation
4. Prevention of rock and scour
- 01. Geocell is easy for granite weathering, crushed stone
and dark rock. - 02. It can produce up to 90m/m in height and 1,000m/m
in height. - 03. Low elongation high strength geocell (honeycomb)
network product has been applied with the first
polyester (PET) material. - 04. Strict quality control of less than 8% of tensile
elongation - 05. No friction or destruction caused by heavy equipment,
crushed stone or rock, therefore the permanent
structure is suitable for safety. - 06. It prevents deformation such as erosion caused by running water and damage occurred by external impacts from the scour.
- 07. The purpose is to prevent the scour caused by the falling of slopes and paces.
- 08. Running water flow is free by porous network structure.
- 09. Since the numerical aperture is more than 80%, the drainage is smooth and prevents the separation of the filling materials such as crushed stone and rock.
- 10. It prevents the groundwater from being swept out by the soil when it is emitted through the slope and soil grows well because the soil (slope) is where the plant can inhabit in a good condition.
- 11. Certified as green technology
