Titanium fume and ilmenite fines characterization for their use in cement-based materials

A series of characterization experiments was conducted to evaluate two by-p roducts from the iron and titanium industry (ilmenite fines and titanium fu me) to be use in cement-based materials. Although these by-products show a weak reactivity (early age), their physical properties, especially in the c ase of titanium fume, which is formed of spherical particles with a mean pa rticle diameter of 1.7 mu m, lead to an enhancement of the mechanical stren gth of mortars (for mortars containing up to 5% replacement of cement). For larger substitution rates, their efficiency coefficients stand between tho se of inert and pozzolanic materials. (C) 2000 Elsevier Science Ltd. All ri ghts reserved.