Wood Ash Utilisation as a Stabiliser in Road Construction - First Results of Large-scale Tests

K. Supancic & I. Obernberger
In recent years the thermal utilisation of solid biomass for heat and electricity production has increased substantially in Austria and the European Union. This has also led to a strong increase in the amount of combustion residues, i.e. ashes. At present, a large fraction of the biomass ashes produced is disposed of in landfills. Ash from woody biomass fuels contains a significant amount of CaO. Therefore, the substitution of burnt lime as a binder for...