Tech talks

Concrete is one of the most essential ingredients in the construction of one's dream house. It helps in maintaining the s and strength to make the structure more durable. However with the invention of 3D Printing, it is now possible to extrude large amounts of cement through an appropriately sized nozzle layer by layer. Composition of concrete can be varied in accordance with the bond strength between layers and exttudability of concrete. The nozzle should be designed such that the pumped concrete extrudes with the proper shape depending on the nozzle ending. C3DP can be achieved by various means such as extrusion screw or plunger arrangement depending on the setup of the assembly. The following images show the setup of a 4 inch stainless steel screw on the gantry of a 3D Printer. A nozzle was not used during extrusion. Note that the cracks the extruded material indicate the lack of compression of concrete within the barrel. It also indicates that the material requires certain c