Mimoune Abadassi

1. Introduction Bleeding of cementitious materials corresponds to the upward displacement of a water film and the settlement of solid skeleton under gravitational forces, resulting in water accumulating at the top [1,2,3]. At the cement paste scale, bleeding occurs due to the difference in density between the solid skeleton and water. It is affected mainly by the particles’ shape, the size, and the specific surface [3,4].