The Effect of Fineness of Cements at Mineral Additions on the Mechanical Response of Concrete

This experimental work is a contribution to the improvement of the properties of theconcretes by mechanical activation (fineness) of two types of cements (C.E.M II)manufactured in various cement factories (cements with various mineral additions: slag and tuff). The physical properties of cements (C.E.M II) activated mechanically at anhydrous state and the state hydrated (specific weight, consistency of the cement pastes, setting times and shrinkage) thus the characteristics of the concretes made at their bases, such as the mechanical behavior (compressive strength for the concrete) are studied. According to the experimental results obtained, it comes that the increase of the specific surface and the chemical composition of cements to the mineral additions are the principal responsibles to the improvement of the latent reactivity of mineral additions and the increase of the mechanical strengths of the concretes.