Abstract: Shuttering floor slab for the two-phase construction of level concrete plates, which is thin and rectangular or polygonal in shape and contains the bending reinforcement of the final slab, used to form a level monolithic structure by assembly and embedded bonding of an upper layer to conform the final slab, characterized in that its body contains multiple parallel longitudinal passages connected to its upper surface by symetrically located slots placed on the longitudinal parallel axes of the passages, and having interrupted continuity, thus creating an intimate connection between the poured upper layer and the shuttering floor slab, through the material of the upper layer itself when this material enters into the longitudinal passages of the slotted floor slab through the slots in the upper face of said slab.

Abstract: A hydraulic cement mortar comprising uniformly dispersed reinforcing fibrillated plastic filaments having microfibrillated structure and elements manufactured therefrom have improved mechanical isotropic properties, such as enhanced performance regarding their semi-elastic limit and impact loading characteristics. It is disclosed also the process for manufacturing said elements.

Abstract: A lightweight hydraulic cement mortar comprising uniformly dispersed reinforcing fibrillated plastic filaments having microfibrillated structure and elements manufactured therefrom having improved mechanical isotropic properties, such as enhanced performance regarding their semi-elastic limit and impact loading characteristics and also a specific weight less than two is disclosed; it is disclosed also the process for manufacturing said elements.

Abstract: Process for homogeneously incorporating fibrous reinforcing material into a matrix of pastes of cementing materials comprises, withdrawing from a supplying station a stream of cementing material paste containing a proportionate layered amount of segmented fibrous material, wherein the layers of fibrous material are uniform layers alternating with layers of cement paste, gravity flowing said stream under laminar flow conditions along a succession of stream lengths flowing in vertically spaced-apart slopes while the above mentioned laminar-flow stream lengths undergo vibration, free-fall discharging from the downstream end of an upper stream length the cement paste onto the upstream end of a stream length flowing by gravity and under vibration along a next succeeding lower slope, wherein the direction of flow of a successive vertically spaced apart stream lengths is in opposite direction. Each laminar-flow stream length, in thin layer and under vibration, takes place along an inclined tray or channel.