关键词: 3D打印混凝土, 氯离子渗透, 侵彻, 数值模拟

Abstract:

The simulation of 3D printed concrete provides a method to the characterization of damage and failure behavior on 3D printed concrete. In this research, the volume proportion of interface area in 3D printed concrete was quantitatively characterized by the chloride ion penetration experiment. And a simulation model based on chloride ion penetration experiment and previous research was developed for projectile impact process. The destruction depths error between simulation and experiment result was limited in 4%. In projectile impact process of 3D printed concrete, the damage was occurred in interface area, which absorbed more energy compared to printed filament area. The projectile was possible to disintegrate in impact process with increasement of projectile velocity and target strength, which led to the decreasement of destruction depth.

Key words: 3D printed concrete, chloride ion penetration, projectile impact, numerical simulation