This work presents the development and investigation of a new type of concrete for the attenuation of waves induced by dynamic excitation. Recent progress in the field of metamaterials science has led to a range of novel composites which display unusual properties when interacting with electromagnetic, acoustic, and elastic waves. A new structural metamaterial with enhanced properties for dynam...

Metaconcrete is a newly manmade concrete where traditional aggregates are partially replaced by resonant aggregates. The metaconcrete slab can attenuate vibration in the specific frequency bandgap which created locally To enhance attenuation performance of slab, dual-resonant aggregate was designed and embedded into slab. Firstly, mass-in-(mass-in-mass) analytical model used to predict characte...

We propose a new type of concrete for the attenuation of elastic waves induced by dynamic excitation. In this metamaterial, which we call metaconcrete, the stone, sand, and gravel aggregates of standard concrete are replaced with spherical inclusions consisting of a heavy metal core coated with a soft outer layer. These engineered aggregates can be tuned so that particular frequencies of a prop...

Structures and their components experience substantially large vibration amplitudes at resonance, which can cause failure. The scope of this study is the utilization silicone-coated steel balls in concrete as damping aggregates to suppress resonance vibration. heavy cores oscillate with a frequency close structure. Due phase difference between vibrations structure, counteract core-coating inclu...

The need to design blast resistant civilian structures has arisen due to aggressor attacks on many civilian structures around the world. Achieving vibration and wave attenuation with locally resonant metamaterials has attracted a great deal of consideration due to their frequency dependent negative effective mass density. In this paper, metaconcrete, a new material with exceptional properties i...

Spalling is a typical tensile fracture phenomenon due to insufficient strength of concrete. Concrete structure might experience severe spall damage at the rear surface owing reflected stress wave induced by impulsive load. In recent years, metaconcrete consisting engineered aggregates has attracted attentions as exhibits extraordinary wave-filtering characteristics. Metaconcrete can be used att...

The mitigation properties of metaconcrete cast with two types resonant inclusions are assessed through wave transmission tests. Three cylindric specimens regular size (20 cm height, 10 diameter), containing an equal number different type disposed in a semi-regular lattice, tested the longitudinal direction within sonic range frequencies. Inclusions, bi-material spheres consisting heavy core coa...