Abstract: The invention relates to a system for extrusion of filaments of construction material enriched with aggregates and/or steel fibers, referred to as loaded material, for a robot for additive manufacture of architectural structures comprising: a head (100) for printing filaments of construction material comprising an inlet opening (110) for material and an outlet nozzle (120) for material; a circuit (10) for supplying material to said print head (100) comprising a reservoir (20) for storing loaded material and a conduit (31) for supplying material, connecting said storage reservoir (20) and said print head (100); characterized in that said supply circuit (10) comprises at least one piston pump (40) mounted on said supply conduit (31) and in that said print head (100) comprises an endless screw (150) arranged between said inlet opening (110) and said outlet nozzle (120) and configured to be able to extrude the loaded material in a continuous manner via said outlet nozzle.

Abstract: The invention relates to a system for extruding cementitious material beads for a robot used for the additive manufacturing of architectural structures, comprising: a head for depositing beads of cementitious material, referred to as printhead (30), comprising an inlet mouth (31) and an outlet nozzle (34) configured to form beads of cementitious material; a feed circuit (20) for said printhead (30), comprising a reservoir (10) for storing cementitious material, a feed conduit (21) connecting said storage reservoir (10) to said printhead (30), and a booster pump (22) for said feed conduit (21), characterized in that it further comprises a sensor (33) for sensing the pressure rate of the cementitious material flowing in said printhead (30), and suitable for transmitting pressure/flow rate measurements to said booster pump (22), and in that the booster pump (22) is configured to control the boosting of the feed conduit (21) on the basis of the measurements transmitted by the sensor (33).