This European Standard specifies soils treated by fly ash for roads, airfields and other trafficked areas and specifies the requirements for their constituents, composition and laboratory performance classification.
This European Standard covers soils treated by siliceous or calcareous fly ash conforming to EN 14227-4.
It does not cover soils treated by fly ash as part of cement or hydraulic road binder conforming to EN 197-1 or ENV 13282, requirements for which are given in EN 14227-10 and EN 14227-13 respectively.