Silica fume is the most common pozzolan used in the formulation of cellulose and PVA fibers reinforced cement produced by Hatscheck method, but the use of metakaolin in cement based composites has been also considered. Comparative study of behavior of cellulose and PVA fibers reinforced cement made with different pozzolanic materials were realized. Up to 15% of the total cement was partially substituted by silica fume and metakaolin. The effect of cement substitution on hydrated phases, pore size distribution, mechanical properties, water diffusion and hygroscopic expansion were evaluated and both experimental details and preliminary results are presented.
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