Abstract
This study systematically studies the static mechanical properties of high-performance concrete (HPC) reinforced with a 3D re-entrant lattice structure, considering the effect of functionally gradient design. The uniform 3D re-entrant lattice (U) and the corresponding vertically positively and negatively graded lattices (FG1 and FG2) were designed and manufactured with 3D printing. The plain HPC (P-HPC) and HPC reinforced with U (U-HPC), FG1 (G1-HPC) and FG2 (G2-HPC) were fabricated accordingly. Static compressive tests were then conducted to investigate the static compressive behaviour of 3D re-entrant lattice and corresponding lattice reinforced HPC. Results indicate that all 3D re-entrant structures exhibit clear NPR effects under loading. The elastic modulus, yield strength, first peak stress of the FG1 and FG2 specimens under static compression are around 9.5-30.0%, 47.8-56.5%, and 43.3-47.9% lower than that of the uniform structures (U), respectively, while the energy absorption of FG1 and FG2 up to densification is about 26.7% and 19.2% respectively higher than that of U. The static compressive strength of HPC specimens is slightly improved owing to re-entrant lattice reinforcement, while the static dissipated energy of P-HPC is 55.7%, 53.2% and 57.5% lower than that of U-HPC, G1-HPC and G2-HPC, respectively.
DOI
10.5703/1288284318158
Recommended Citation
Xuan, Yiwei; Zhang, Mingzhong; and Gao, Dianwei, "Static Compressive Behaviour of a Novel Functionally Graded 3D Re-entrant Lattice Reinforced High Performance Concrete" (2025). International Conference on Durability of Concrete Structures. 8.
https://docs.lib.purdue.edu/icdcs/2025/act/8
Static Compressive Behaviour of a Novel Functionally Graded 3D Re-entrant Lattice Reinforced High Performance Concrete
This study systematically studies the static mechanical properties of high-performance concrete (HPC) reinforced with a 3D re-entrant lattice structure, considering the effect of functionally gradient design. The uniform 3D re-entrant lattice (U) and the corresponding vertically positively and negatively graded lattices (FG1 and FG2) were designed and manufactured with 3D printing. The plain HPC (P-HPC) and HPC reinforced with U (U-HPC), FG1 (G1-HPC) and FG2 (G2-HPC) were fabricated accordingly. Static compressive tests were then conducted to investigate the static compressive behaviour of 3D re-entrant lattice and corresponding lattice reinforced HPC. Results indicate that all 3D re-entrant structures exhibit clear NPR effects under loading. The elastic modulus, yield strength, first peak stress of the FG1 and FG2 specimens under static compression are around 9.5-30.0%, 47.8-56.5%, and 43.3-47.9% lower than that of the uniform structures (U), respectively, while the energy absorption of FG1 and FG2 up to densification is about 26.7% and 19.2% respectively higher than that of U. The static compressive strength of HPC specimens is slightly improved owing to re-entrant lattice reinforcement, while the static dissipated energy of P-HPC is 55.7%, 53.2% and 57.5% lower than that of U-HPC, G1-HPC and G2-HPC, respectively.
