Soil Stabilisation & Ground Improvement

Improving ground performance for safer, more efficient construction projects

Unstable soils and variable ground conditions are among the biggest risks to construction programmes. Without treatment, weak ground can lead to delays, escalating costs, and long-term structural issues. Our soil stabilisation, ground modification, and stone replacement services are designed to overcome these challenges, creating reliable, load-bearing ground that supports safer, more efficient construction from the very start.

Unstable or weak soils can pose significant challenges to construction programmes, leading to delays, added costs, and long-term performance issues. Killingley’s soil stabilisation, ground modification, and stone replacement services are designed to overcome these challenges, delivering stable, load-bearing ground that supports successful project outcomes.

By applying specialist techniques and proven geotechnical solutions, we enhance soil strength, reduce settlement risks, and improve durability across a wide range of construction environments. As part of our wider Technical Earthworks capability, these services integrate seamlessly with cut and fill, drainage, and material recycling strategies, ensuring projects are delivered on time and within budget.

Core Techniques for Stronger Ground

Soil Stabilisation – Using binders such as lime and cement to increase strength, reduce plasticity, and minimise moisture content.

Ground Modification – Treating soils to improve workability, compaction, and suitability for construction.

Stone Replacement – Removing unsuitable soils and replacing them with engineered granular material to provide reliable load-bearing capacity.

Deep Compaction Methods – Improving density and reducing voids to support heavy construction activities.

Sustainable Solutions – Reducing reliance on imported aggregates by treating existing site material wherever possible.

Why These Methods Matter

Stabilising and modifying soils delivers multiple benefits for both construction and long-term land performance:

Cost Efficiency – Minimise the need for costly excavation and imported materials.

Programme Certainty – Faster, more predictable progress by reducing weather-related delays.

Improved Strength & Durability – Ensures soils can withstand traffic, loading, and long-term settlement.

Environmental Gains – Lower carbon impact by recycling site-won soils and reducing lorry movements.

Design Flexibility – Allows construction on challenging sites that would otherwise be unsuitable.

Specialist Approaches in Practice

Killingley applies advanced engineering and material science to deliver soil improvement:

  • Lime & Cement Stabilisation – For clay-rich soils and moisture control.
  • Dynamic Compaction – Reorganising loose soils for increased density.
  • Geotextile Reinforcement – Strengthening soils and improving load distribution.
  • Stone Replacement Layers – Engineered solutions for high-load platforms and roads.
  • Blended Material Recycling – Incorporating recycled aggregates into site preparation.

Applications Across Projects

Our soil stabilisation, ground modification, and stone replacement services are essential in:

  • Highways & Infrastructure – Stable ground for roads, embankments, and utilities.
  • Commercial & Industrial Sites – Reliable platforms for buildings, warehouses, and logistics centres.
  • Residential Developments – Safe, durable foundations for housing estates.
  • Public Sector & Education – Long-term stability for schools, campuses, and civic projects.
  • Flood & Water Management Schemes – Soil treatments that protect against erosion and water ingress.

The Benefits of Soil Stabilisation & Modification

  • Reduced import/export of materials and associated haulage costs.
  • Lower carbon footprint and compliance with sustainability targets.
  • Increased safety through consistent load-bearing soils.
  • Programme efficiency through reliable ground performance.
  • Long-term resilience, ensuring soils perform well beyond project completion.

Experienced, Accredited & Ready to Deliver

Killingley is accredited to ISO 9001, 14001 and 45001, and holds Constructionline Gold and CHAS Advanced certifications. With decades of experience in soil stabilisation and technical earthworks, our teams bring engineering expertise, specialist plant, and sustainable practices to every project.

Strengthening Ground, Securing Projects

Why Choose Killingley for Soil Stabilisation & Ground Improvement?

Technical Expertise

Proven track record in complex ground engineering projects.

Sustainability Focus

Recycling site-won soils to minimise carbon and haulage impacts.

Integrated Solutions

Part of our wider technical earthworks package.

Proven Delivery

Reliable outcomes across highways, commercial, and residential developments.

Soil Stabilisation & Ground Improvement Insights