- Aggregates and binders for HBM must comply with BS EN 14227, the respective BS EN specified in Table A10.4 and the requirements of this clause.
Table A10.4 Standards Constituent BS EN Aggregates BS EN 13242 Water BS EN 1008 Cement BS EN 197-1 GBS (granulated blast furnace slag) BS EN 14227-2 GGBS (ground granulated blast furnace slag) BS EN 15167-1 Lime BS EN 459-1 Gypsum BS EN 14227-2 or BS EN 14227-3 FA (Fly ash) BS EN 14227-4 ASS (Air-cooled steel slag) BS EN 14227-2 HRB (Hydraulic road binder) BS EN 13282
- The binder constituent proportions must comply with Table A10.5 and must be based on a laboratory mixture design procedure in accordance with A10.2.11 to A10.2.16.
Table A10.5 Minimum binder or binder constituent additions Binder or binder constituent Mode of use (mode of use not listed below must be subject to approval by the authority) Minimum addition by dry mass of mixture Lime / cement / HRB / GGBS when used with another binder constituent 2% when used as sole treating agent 3% ASS & GBS when used together 2.5% each Dry fly ash when used with cement 4% when used with lime 5% Conditioned (i.e. wet) fly ash All applications 6%