Often unsuitable embankment and/or pavement materials are disposed of and replaced with selected gravels and/or quarried aggregates in both embankment and pavement construction works. In most cases this costly replacement process can be eliminated completely, where up to 100% of the existing materials are treated chemically, altering the soil’s engineering properties (modification) or strengthening the natural and/or quarried aggregates (stabilisation). Modifyinglow cost marginal quality aggregates or soils can be a cost effective alternative to using high cost premium quality aggregates, providing significant cost savings, especially in rural areas or area where high quality quarried materials are no longer viable.
This proven pavement construction methodology uses our specialist and purpose built spreaders and stabilisers, where small quantities of binder (generally lime and/or cement) are accurately added and mixed into the pavement materials. The added binders can significantly improve the engineering properties and performance of the in-situ materials (once compacted and finished) where modifying low cost marginal quality aggregates can be a cost effective alternative to using high cost premium quality aggregates.
Benefits of Stabilisation
- Increase in bearing capacity and potential traffic loadings
- Environmentally friendly construction
- More durable surface for un-sealed roads (reduction in fines mobility therefore less dust)
- Utilisation of lower quality or marginal aggregates
- Fast, efficient and cost effective construction methodology
- Ability to recycle a failed pavement or increase a new pavements design life
- Substantial costs savings over conventional cut/fill remediation techniques
- Significantly less aggregate & transport costs required for new pavement construction
- Treatment of contaminated materials
- Reduction in permeability and increased pavement serviceability in wet conditions