Demonstrative cement based products development including recycled fibres from WT blades
BRIO consortium has manufactured at industrial scale 3 types of precast cement concrete products: safety barriers, manhole modules and blocks. Those products are made of precast concretes with different workabilities and reinforcement. The formulations include Portland cement, natural limestone aggregate, minor amounts of chemical additives and a low water/cement ratio to allow a quick mould removal. Recovered fibres obtained after mechanical treatment of WT blades waste were used as reinforcing fibres. Manufacturing processes remain unaltered and no extra energy for mixing or compacting was demanded.
Moreover manhole modules with recycled fibres have been mechanically tested, showing higher crushing strength than standard product. Safety barriers with recycled fibres have been installed in a public motorway near Lumbreras (La Rioja) and concrete blocks will be used for a retaining wall soon.