Dynamic response of TPMS-Primitive reinforced cement beam under impact loading

Most current researchers have paid attention to the dynamic performance of cement/concrete-based structures in recent years due to their widespread use in the construction industry. Many types of reinforcement for the structure, i.e., steel rebars, fiberreinforced polymer, have been introduced to improve their mechanical behavior under dynamic loading. In this paper, a novel approach for cement-based beams' reinforcement is proposed, in which the beam is reinforced with 3D printed biodegradable polylactic acid (PLA) TPMS-Primitive shell. A non-reinforced beam is fabricated to compare with those reinforced with a two-layer Primitive shell under impact load. Experimental and numerical results are quite consistent in terms of time history of reaction forces, energy absorption, and failure patterns. The research outcomes indicate that considerable robustness in loadbearing ability is witnessed when the beam is embedded with the 3D printed TPMS-Primitive shells. This approach of reinforcement seems to be feasible as the proliferation of using advanced additive manufacturing is growing significantly.