In situ soil treatment techniques consist of mixing the soil in place with a binder (cement, lime, hydraulic road binder) in order to improve or stabilise it. Applications are fill materials, capping layers and sub-bases.
The benefits are:
speed of project completion;
lower landfill costs;
reduced use of imported aggregates;
less aggregate levy;
reduced local construction traffic;
the provision of an economic and effective sub-base;
the ability to deal with sulphate-bearing soils.
Other cement and concrete credentials concern:
Durability and longevity, constituting a cost-effective and environmental advantage;
Safe and comfortable surfaces;
Recyclability of concrete;
Use of low energy cements;
Lower fuel consumption for heavy trucks;
Reduced lighting costs and urban heat island effect;
No danger of leaching.