High or ultra-high performance concrete

摘要

A binder premix includes from 0.2% to 63% of a material of an ultrafine particle size category, including individual particles with a D90 value less than 1 μm and/or with a BET specific surface greater than 5 m2/g; from 8% to 63% of selected Portland cement including particles with a D90 value less than 30 μm and from 25% to 85% of a material, other than the cement, of a fine particle size category, including particles for which the D10 and D90 values are from 1 μm to 120 μm and with a BET specific surface less than 5 m2/g. A binder mix including, in addition to the premix, a material of a medium particle size category, including particles for which the D10 and D90 values are from 120 μm to 5 mm is disclosed.

主权项

1. A binder mix, comprising in mass proportions:
from 10% to 25% of a material of an ultrafine particle size category, the individual particles of which have a D90 value less than 1 μm and/or a BET specific surface greater than 5 m2/g, wherein the material of the ultrafine particle size category comprises from 0 to less than 1%, by weight of a total mass of the material of the ultrafine particle size category, of silica fume; from 8% to 25% of selected Portland cement; from 25% to 40% of a material, other than the cement, of a fine particle size category, the particles of which have a D10 and D90 value from 1 μm to 120 μm and a BET specific surface less than 5 m2/g, and from 20% to 60% of a material of a medium particle size category, the particles of which have a D10 and D90 value from 120 μm to 5 mm.