THREE-DIMENSIONAL CONCRETE PRINTING IS A TECHNIQUE THAT HAS BEEN GROWING CONSTANTLY, PRESENTING ADVANTAGES SUCH AS REDUCED COMPLETION TIMES AND A DECREASED ENVIRONMENTAL IMPACT BY ELIMINATING THE USE OF FORMWORKS. TO CARRY OUT THE PROCESS, THE PRINTING PATH OF THE EXTRUDED MATERIAL AND THE MOVEMENT OF A ROBOT MUST BE PROGRAMMED. THUS, THE PRESENT RESEARCH SIMULATED THESE 3D CONCRETE PRINTING PROCESSES IN A SMALL 2-FLOOR BUILDING OF 309.06 M2 AND THEN IN A 12-FLOOR BUILDING OF 10,920 M2. TO ANALYZE THE 3D PRINTING PROCESS, DISCRETE-EVENT SIMULATION WAS USED WHILE CONSIDERING DIFFERENT VARIABLES SUCH AS EXTRUSION SPEED AND THE LOCATIONS OF A ROBOT MOUNTED ON TRACKS. THE RESULTS SHOW THAT WHEN COMPARING THE TIME TAKEN FOR A CONVENTIONAL CONSTRUCTION SYSTEM TO CONSTRUCT CONCRETE WALLS AND THE MAXIMUM DURATION FOR 3D-PRINTED WALLS, THIS METHOD IS 45% FASTER THAN TRADITIONAL CONSTRUCTION FOR A SMALL BUILDING, BUT FOR A BIG BUILDING, THERE IS A DIFFERENCE OF 40% IN FAVOR OF CONVENTIONAL CONSTRUCTION; HOWEVER, THIS WAS WHEN USING ONLY 1 ROBOT FOR THE WHOLE BUILDING. AFTER RUNNING THE SAME ANALYSES BUT USING 3 ROBOTS INSTEAD OF 1, THE TOTAL 3D CONCRETE PRINTING TIME FOR THE BIG BUILDING WAS 80% FASTER IN FAVOR OF THE 3D CONCRETE PRINTING PROCESS.