Abstract:
Metaconcrete, a new type of material with vibration attenuation characteristics, is formed by replacing natural coarse aggregates with a heavy metal core wrapped with an elastic soft coating and mixed with mortar. When subjected to dynamic loads, metaconcrete could attenuate the vibration response of concrete using the bandgap generated by the local resonance of artificial aggregates. Recently, metaconcrete has received great attention in the field of blast and impact resistance due to its remarkable vibration reduction performance under high-frequency dynamic action vibration, and various forms of metaconcrete have been developed by changing the structure and arrangement of aggregates. Systematic theoretical derivation, numerical analysis and experimental studies have been carried out for the vibration attenuation performance of metaconcrete. In order to accelerate the research and application of metaconcrete in the civil engineering, the research work on its vibration reduction performance was systematically summarized, the problems and bottlenecks in the engineering performance were discussed, and the future vibration attenuation research and application prospects of metaconcrete were prospected in this paper.