FraMCoS 11 2023 Bangalore, India

Fracture characterization of 3d -printed ultra-high performance fiber concrete beams using acoustic emission

The present study utilizes Acoustic Emission (AE) Testing to investigate the fracture pro- cess in 3D Printed-Ultra High-Performance Concrete (3DP-UHPC)beamsunderthree-pointbending. These3DprintedUHPCspecimensarereinforcedwithmicrosteelfibersatadosageof2%byvolume and feature two distinct notch depths, 6 mm and 60 mm. During the testing process, AE is employed to…

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Year 2023
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Abstract

The present study utilizes Acoustic Emission (AE) Testing to investigate the fracture pro- cess in 3D Printed-Ultra High-Performance Concrete (3DP-UHPC)beamsunderthree-pointbending. These3DprintedUHPCspecimensarereinforcedwithmicrosteelfibersatadosageof2%byvolume and feature two distinct notch depths, 6 mm and 60 mm. During the testing process, AE is employed to evaluate the fracture process zone and transition ligament length (a ) of the prisms. The Work of l fracture method and the BoundaryEffectmethodisemployedtodeterminebothSize-Dependent(Gf) and Size Independent Fracture energies (GF).