The present disclosure envisages a system (100) for 3D printing a concrete structure. The system (100) comprises a printing platform (102), an extrusion unit (104), a load cell (108), a plurality of photoelectric sensors (110), a repository (112), a thermal unit (114), and a control unit (116). The load cell (108) is coupled to the printing platform (102) and is configured to periodically sense the weight of the extruded concrete layer. The plurality of photoelectric sensors (110) is disposed proximal to the extrusion unit (104) and is configured to generate a sensed reflected signal. The thermal unit (114) is disposed proximal to the printing platform (102). The thermal unit (114) is configured to facilitate removal of moisture from the extruded concrete layer. The control unit (116) is configured to activate the thermal unit (114), to allow setting of the concrete layer in less time.