Geocell In Road construction – Types, Advantages, Disadvantages & Applications

Geocells are versatile panels made from materials like high-density polyethylene (HDPE) or polyester. When installed, these panels expand and form flexible, three-dimensional walls. They create a drainage system that holds filling materials like sand or stone, enhancing the soil’s behavior.

Geocell Origins

Presto Geosystems pioneered Geocell technology in the late 1970s and early 1980s. These cells, typically made of ultrasonically welded HDPE strips, form a honeycomb structure filled with materials like sand and stone.


Geocells in Road Construction: Purpose and Benefits

Geocells, a type of geosynthetic, stabilize soil. They find application in controlling erosion, stabilizing soil, protecting channels, and reinforcing structures for load support and earth retention.


Different Types of Geocell

Geocells are categorized into two main types:
Perforated Geocell : This type has uniform holes that enhance stress distribution and reduce deformation. The integrity relies on the strength of the perforated strip and weld.

Non-Perforated Geocell : These have thick, smooth walls and are usually a polymer sheet with a three-dimensional mesh structure.


How Geocells Operate in Road Construction

Unpaved roads often face challenges due to unstable soils. Geocells provide the necessary stiffness and resistance to reinforce soft soils. They prevent clay from shrinking or cracking, aid in lateral dispersion and filtration of sandy soils, and strengthen subsoils in softer ground.

Maintenance with cellular restraint systems ensures road stability, preventing damage, cracking, washouts, and settling of surfaces.


Applications of Geocells

Geocells have a wide range of applications in engineering:

  • Strengthening road shoulders
  • Waterfront reinforcement
  • Construction of geomembrane protection
  • Building geocell cell restriction systems
  • Road and highway construction
  • Military route reinforcement
  • Load support
  • Channel protection
  • Airport runway construction
  • Access road creation
  • Watershed management
  • Intermodal/port facilities
  • Shipping terminals and containers

Advantages of Geocells in Road Construction

Geocells offer several benefits:

  • Availability in various sizes, depths, lengths, and colors
  • Strong protection for impervious layers
  • Significant subclass deformation without structural loss
  • Easy transportation and installation
  • High resistance to stress, tearing, punching, and fatigue
  • Environmentally friendly
  • Lightweight, cost-effective, and durable
  • Economical compared to other options
  • Enhance structure reliability and lifespan
  • Aid in forming embankments on weak soil
  • Assist in building earth retention walls and sound-absorbing structures

Limitations of Geocells in Road Construction

While geocells offer numerous advantages, there are some considerations:

  • Long-term performance relies on specific resin formulation
  • Requires careful quality control for management, storage, and installation

Conclusion : Geocells in Modern Construction

Geocells represent a cost-effective solution for various technical challenges. They find extended application in soil retaining walls, reducing construction time and costs while enhancing aesthetic appeal. Widely used in environmental projects, geocells continue to be a valuable tool in modern construction methods.