GeoCell(ATWEB)

GeoCell (ATWEB)

ATWEB unit is a unique confinement system of heavy duty polymeric strip welded ultrasonically formed into a honeycomb structure. It is used in its expanded form filled with soil or concrete, depending on design equipement or project specifications.

Geocell firstly introduced by U.S Army corps of Engineers in 1975 to find out the solution for building roads over soft soil. It has been inferred from the research that soil confinement system worked better than conventional crushed stone sections and it can provide a faster construction technique to access roads over soft ground in any weather condition.

ATWEB filled with infill material is equivalent to twice the thickness of unreinforced gravel bases and is more effective in reducing lateral spreading of the fill under loading than the conventional reinforced bases. The hydraulic properties are influenced by the type and compaction of the filling material folded into an accordion shape for easy transportation & construction.

ATWEB unit is expanded on site and filled with all materials such as sand, stone, all types of soil, or other materials. The three-dimensional cellular design allows for customised, configuration and adaptability to a variety of terrains. It can also offer an excellent environment for vegetation.

Working Mechanisms

ATWEB when filled with infill material forms a composite confined system having enhanced mechanical and geotechnical properties. With subjected loads, soil contained in the cell tries to spread laterally but movement is restricted by the confinement of cell walls that make the whole system still in a case of load support application.
The confinement effect is based on major 3 mechanisms which are active earth pressure within loaded cell, passive earth pressure in the adjacent cells and hoop stresses in the cell walls. This improves the shear strength of the confined soil which does the following functions:

• Creates a stiff mattress or slab to distribute the load over wider area.
• Reduces punching of soft soil.
• Increase shear resistance and bearing capacity.
• Decrease deformation.

Why ATWEB?

• We have most advanced fully automated state of the art ultrasonic welded manufacturing machine.
• We use best quality of raw material for all our products.
• Complete testing laboratory to adhere all standards worldwide.
• We deliver top quality products and services to our customers all over the world.
• Varying cell size & weld spacing.

Benefits of ATWEB

• It is easy to cut in any size without damage and provides reinforcement to steep slopes.
• Based on the project requirements, it can be vegetated for aesthetic appearance or left with lean concrete.
• These are effective solutions for ground improvement over soft ground.
• With the provision of geocell in pavement, its thickness can be reduced or its design life can be Increased thereby reducing the cost of project.
• Easily movable as flat strips welded and reduces the carbon footprint by minimizing logistics.
• This is the one and only geosynthetic product that comes along with third dimension that is having its significant properties.
• No skilled labour is required and can be laid in any weather condition.
• Infill used in it can be non-cohesive or recycled locally available material.

Applications of ATWEB

• Vegetative slope confinement/ erosion control.
• Road and pavement reinforcement.
• Protective stabilization of steep slope surfaces.
• Protective linings of channels and hydraulic structures.
• Static and dynamic load support on weak subgrade soils.
• Earth retention for banks and slopes earth wall
• Reservoir and landfill protection.
• Multilayered earth retaining and water retaining gravity structures

Channel Protection

ATWEB filled with concrete can be used to protect geomembrane lining in canals and reservoirs. Required concrete depth is maintained with no chances for over pours or under pours. This is more ideal solution for severe hydraulic conditions rather than preformed concrete systems. In channel protection, multiple infill material can be used on the same panel based on flows.
Bottom can be filled with concrete to acomodate higher velocities and then can be transited to soil showing natural vegetation at the top.

Load Support

Pavements are subjected to fatigue and rutting when subjected to vertical pressures. This either demands the increased thickness of pavement or reduce the life of pavement ultimately pose a risk to human life.
Provision of ATWEB within pavement layer solves both problems and also minimizes the project cost. ATWEB filled with soil enhances the strength of pavement and reduces settlements and formation of reflective crack and pot-holes.

Slope Protection

ATWEB with local soil or granular material shall be placed on cut or fill slope to hold top cover soil and allow vegetation to grow. Compared to riprap system which is costly for client and poses handling problems for labour,cellular confinement is better, economical and can be used in any weather conditions.
Protection of slope over wing wall in RS wall in partial height RS walls, wing walls are constructed to join structure along the carriageway and longitudinal walls along the road. ATWEB filled with concrete can be laid above wing wall for the slope protection over it.