Airport & Airfield Ground Stabilization Solutions

Airport and Airfield Infrastructure Challenges

Airport infrastructure must perform under demanding operational conditions, where pavement reliability, safety and continuous access are critical. Runways, taxiways, aprons, shoulders, access roads, drainage areas and service platforms are exposed to repeated aircraft loading, heavy service traffic, variable ground conditions and strict operational constraints.

Weak, saturated or expansive subgrades can reduce bearing capacity and contribute to settlement, deformation and pavement deterioration. These risks are intensified by drainage exposure, concentrated loading and the need to keep airport infrastructure operational during construction and maintenance.

Common airport and airfield engineering challenges include:

  • Weak, saturated or expansive subgrades beneath critical pavement areas
  • Repeated aircraft loads and heavy-duty service vehicle traffic
  • Settlement and differential deformation affecting pavement serviceability
  • Rutting, cracking and surface deterioration in paved and unpaved airfields
  • Drainage, erosion and water-management challenges around pavements and shoulders
  • High maintenance demand that can disrupt airport operations
  • Limited construction and rehabilitation windows
  • Remote-site logistics and limited access to quality aggregate
  • Pressure to reduce aggregate use, construction time, logistics and carbon impact
  • Maintaining reliable year-round access at unpaved or remote airfields

For airport and airfield owners, these challenges directly affect operational reliability, maintenance planning, construction cost and long-term pavement performance. In remote and unpaved airfields, the challenge can be even greater, with difficult soils, limited local materials and heavy dependence on air or long-distance logistics.

Why Neoloy® Tough-Cells Are Relevant for Airports

Neoloy® Tough-Cells are relevant to airport infrastructure because they address both the engineering performance and the construction reality of aviation projects. 

The system creates a semi-rigid reinforced layer that distributes aircraft and vehicle loads over a wider area, helping reduce stress on weak subgrades and limiting long-term deformation. This is especially important for airport pavements built over soft clay, saturated soils, black cotton soil, peat, sand or marginal fill. 

For airports, Neoloy® Tough-Cells can help: 

  • Stabilize very soft subgrades, including soils with CBR below 1%
  • Increase bearing capacity and base-layer stiffness under aircraft loads
  • Reduce pavement thickness where validated by project design
  • Reduce asphalt thickness by up to 35%
  • Cut aggregate requirements by up to 70% using approved local or marginal infill
  • Reduce rutting, settlement, fatigue and surface deterioration
  • Reduce construction time and costs by up to 50%
  • Simplify logistics and accelerate installation with compact folded sections.

Neoloy® Tough-Cells are manufactured from Novel Polymeric Alloy – NPA, with properties suited to long-term airport infrastructure: 

High dynamic stiffness

Maintains confinement and structural response under repeated aircraft and service-vehicle loading.

Low permanent deformation

Supports long-term dimensional stability and helps maintain cell geometry under cyclic loading.

High tensile strength

Resists hoop stresses as aircraft loads are distributed through the confined structural layer.

High environmental durability

Supports long-term performance under water exposure, chemicals, UV and demanding airfield conditions.

Airport & Airfield Applications

Airport Access Roads
  • Stabilizes weak soils under repeated traffic;
  • Reduces aggregate demand and hauling;
  • Supports construction traffic, service vehicles, emergency access and logistics routes. 
  • Increases bearing capacity for heavy-duty operational areas;
  • Reduces pavement deformation under high static and dynamic loads;
  • Supports apron pavements and working platforms. 
  • Protects drainage channels, swales and retention pond slopes;
  • Reduces erosion around paved surfaces;
  • Links to Channels, Drainage & Environmental Protection applications. 
  • Reinforces pavement layers under cyclic aircraft loading; 
  • Helps reduce rutting, settlement and surface degradation;
  • Supports paved and unpaved runway rehabilitation. 
  • Improves load distribution under aircraft and service vehicles;
  • Stabilizes shoulder zones and transition areas;
  • Supports safer pavement edges and operational areas. 
  • Stabilizes gravel or local soil surfaces;
  • Reduces re-graveling and recurring surface repairs;
  • Improves year-round airfield reliability in remote or humanitarian operations. 

Key Benefits for Airport Projects

Improved load distribution

Creates a semi-rigid reinforced layer that spreads aircraft and service vehicle loads over weak soils.

Higher pavement stiffness

Increases base and subbase modulus, improving pavement response under repeated loading.

Reduced deformation

Helps limit rutting, settlement, cracking and surface degradation.

Soft soil stabilization

Supports airport construction over saturated clay, black cotton soil, peat, sand and marginal subgrades.

Long-term confinement

Neoloy® NPA provides high stiffness, tensile strength and low permanent deformation for demanding airport conditions.

All-weather construction support

Enables installation in difficult or saturated ground conditions where conventional methods may be delayed.

Faster construction

Simplified logistics and installation help reduce construction windows.

Lower construction cost

Material optimization, reduced aggregate, reduced asphalt and local infill can lower project cost.

Reduced maintenance

Less rutting, settlement and surface degradation reduces downtime and repair frequency.

Operational reliability

Stronger airfield infrastructure supports safer and more dependable aircraft operations.

Remote-site advantage

Reduces dependence on long-distance aggregate supply and heavy logistics.

Lower aggregate demand

Reduces the need for imported crushed aggregate where local infill can be validated.

Reduced hauling

Compact folded sections and local infill options reduce logistics burden.

Lower carbon footprint

Less imported material, reduced excavation and optimized pavement thickness support lower environmental impact.

Reduced pavement weight

Lightweight local infill can reduce structural weight over compressible soils.

Longer service life

Improved pavement performance reduces recurring repairs and material replacement.

Project Validation: Rubkona Airfield, South Sudan

The Rubkona airfield supports critical UN humanitarian operations. Before rehabilitation, the unpaved airfield suffered from continuous degradation, gravel loss, severe cracking and limited fixed-wing aircraft access during the rainy season. 

Neoloy® Tough-Cells – NPA based, were selected for the rehabilitation of the runway, taxiways, aprons, access roads and drainage areas. The solution supported pavement thickness reduction, local soil use, faster construction and long-term airfield reliability. 

Project value delivered 

  • 25-40% reduced pavement thickness 
  • Local sandy soil used as main pavement material 
  • Runway extended from 800 m to 2.2 km to accommodate larger transport aircraft 
  • Accepted WSP design around US$10 million compared with about US$27 million for a conventional chemical stabilization approach, and much more.

 

View Rubkona Airfield Case StudyRead WSP article – Rehabilitating a critical airstrip 

Build Stronger Airport Infrastructure with PRS

PRS supports airport infrastructure projects with engineering evaluation, pavement optimization, application-specific design guidance, installation support and relevant project references.