3d extruder for polymer concrete, method for producing polymer concrete-micro-aggregates, and said concrete

A polymer concrete extruder by thermo-fusion comprising:

• a) a main body, receiver in charge of containing the material to extrude by a end, and which corresponds to a steel hollow pipe containing a pushing Archimedes's screw, electric collars to generate heat and a motor to generate torque to the Archimedes's screw, and at the superior end, having a shovel allowing the pass of raw material consisting of polymer pellet, including polylactic acid (PLA), ABS, TPU, PET and micro aggregates, and at the bottom end, having a extrusion steel nozzle, able to support temperatures varying between 0° and 300° C. and allowing the pass of composite forward the exterior,
• b) a mean to generate torque in charge of mixing polymer and micro-aggregates either inside the main body by means of a worm gear or Archimedes's screw receiving a torque through a motor connected at an end, and which can be rotate at a variable velocity and power and which can be previously set as required,
• c) a heating system consisting in means to generate temperature or a near heating source, in charge of melting plastic, preferably, band heaters or collars at the main body of the extruder, which can achieve temperatures between 150° C. and 300° C., and thus, can melt plastic without burning and achieving a viscosity allowing a mix with micro aggregates and generate an homogeneous mix can be transported by the worm gear of the screw up to output by the extruder's bottom end.