Identification of brittle damage in a UHPC beam
using ultrasonic transmission tomography
Karolina Tatara¹* (orcid id: 0000-0002-4401-1858)
Piotr Adam Bońkowski¹ (orcid id: 0000-0001-9931-9115)
¹ Opole University of Technology, Poland
DOI: 10.17512/bozpe.2025.14.22
Article (PDF)
KEYWORDS
concrete, UHPC, ultrasonic transmission tomography
ABSTRACT
This paper presents the results of ultrasonic testing conducted on a steel
fiber-reinforced UHPC (Ultra-High Performance Concrete) beam with dimensions of 0.2 m × 0.24 m ×
6.0 m. The beam was subjected to 13 loading stages, with an asymmetrical load application. For the
first 11 loading stages, longitudinal ultrasonic wave propagation at a frequency of 150 kHz was
measured prior to each loading step using an ultrasonic concrete tester. The recorded wave travel
times were then processed in MATLAB using a least squares method with Tikhonov
regularisation to reconstruct the damaged zones within the beam. The results enabled the
identification of localised cracks and the progressive development of damage
in the UHPC beam.
Politechnika Częstochowska uczelnią dostępną.
