Highway Capping Layers
Improvement of in-situ soils for highway earthworks, pavement support layers and adoptable road construction.
Lime Treatment • Cement Treatment • In-Situ Ground Improvement
Practical soil treatment solutions for weak, wet, plastic or marginal ground conditions.
Furlong Ground Stabilisation delivers soil improvement solutions that make unsuitable or marginal site-won soils more workable, more compactable and more capable of supporting construction loads. By treating the existing material in situ, projects can often reduce excavation, reduce disposal and reduce the need for imported aggregates.
Soil improvement is used across highways, foundations, temporary haul roads, compounds, development platforms and other infrastructure works where the natural ground is too wet, too soft, too plastic or too variable to perform as required.
From testing to treated and verified ground
Review of site investigation data, soil type, moisture condition, sulphate information and intended performance requirements.
Sampling and laboratory testing are used to assess workability, bearing performance and the most suitable binder type and dosage.
A project-specific treatment plan is developed to define mixing depth, spread rates, construction sequence and verification requirements.
Lime, cement or other selected binders are spread and mixed into the soil to dry, modify or strengthen the material in place.
The improved soil is graded, compacted and checked through field testing to confirm it meets the required construction standard.
Less Waste • Better Ground • Faster Progress
For highways, platforms, foundations and temporary works
Soil improvement helps convert site-won material from a construction problem into a usable engineering asset, improving handling, compaction, bearing capacity and long-term performance.
Improvement of in-situ soils for highway earthworks, pavement support layers and adoptable road construction.
Treatment of marginal soils to improve bearing capacity and support shallower or more practical foundation solutions.
Improved ground conditions for access roads, site compounds and working areas that need to perform in challenging weather and traffic conditions.
Soil treatment for housebuilding and commercial development sites where natural ground conditions need to be improved before construction.
Improved soils used in layers that require better compaction, volumetric stability and more reliable construction performance.
Mobile plant and in-situ mixing methods that improve soils directly on site, avoiding unnecessary handling and material movement.
Selected according to soil type, moisture condition and required engineering outcome
Best suited to wet, clay-rich or highly plastic soils. Lime reduces plasticity, increases the plastic limit, improves handling, raises MCV and helps dry material so it can be excavated, placed and compacted more effectively.
More commonly used where increased compressive strength, stiffness and durable load-bearing performance are required, especially in lower plasticity soils, clayey sands and gravels.
Some projects benefit from lime modification first to make the soil friable and workable, followed by cement treatment to create a more robust cementitious matrix and long-term strength gain.
Commercial, technical and sustainability advantages for UK construction projects
Wet and highly plastic soils become easier to handle, spread, level and compact, helping site operations move forward more efficiently.
Improved soils can support heavier loads and provide a more reliable base for roads, foundations, compounds and temporary works.
Reusing and improving site-won materials can cut the volume of spoil leaving site and reduce disposal-related cost and programme pressure.
Treating existing soil reduces reliance on imported stone and can improve both project logistics and sustainability performance.
In-situ treatment can reduce transport emissions and material demand, particularly where low-carbon binder strategies or partial cement replacement options are suitable.
Properly designed and verified soil improvement can reduce susceptibility to shrink-swell behaviour, settlement risk and variable platform performance.
Furlong develops project-specific treatment plans based on site investigation, binder selection, laboratory testing and on-site verification, helping clients achieve practical and dependable construction platforms.
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Project-specific treatment planning based on site data and bearing requirements
Experience with lime treatment, cement treatment and in-situ ground improvement
Laboratory testing and on-site QA support including CBR, MCV, LWD and related checks
Strong understanding of highways, capping, foundations, haul roads and compounds
Focus on safer delivery, reduced waste and practical buildability
Examples of marginal ground improved for real project needs
Treatment of wet or unsuitable soils to create a more stable and compactable layer for highway-related construction.
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A project showing how treatment of marginal soils helped support a more practical foundation solution and reduced imported material demand.
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In-situ soil improvement used to support faster access, better weather resilience and lower material movements on site.
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Furlong provides soil improvement services across the UK for projects that need a practical way to deal with weak, wet, highly plastic or otherwise unsuitable ground. By improving site-won soils in situ, we help clients reduce spoil, reduce imported aggregate and create more reliable platforms for construction.
Our soil improvement solutions include lime treatment for modification and drying, cement treatment for strength and durability, and combined treatment strategies where project conditions demand both improved workability and increased long-term engineering performance.
Whether the requirement is highway capping, foundation support, development platforms, haul roads, compounds or general ground improvement, our approach is based on testing, treatment planning, safe construction methods and verification of the finished layer.
