Techno Press
Techno Press

Advances in Nano Research
  Volume 11, Number 6, December 2021 , pages 641-648
DOI: https://doi.org/10.12989/anr.2021.11.6.641
 

The determination of effect of TiO2 on dynamic behavior of scaled concrete structure by OMA
Sertaç Tuhta

 
Abstract
    In this article, the dynamic parameters (frequencies, mode shapes, damping ratios) of the scaled concrete structure and the dynamic parameters (frequencies, mode shapes, damping ratios) of the entire outer surface of titanium dioxide, 80 micron in thickness are compared using operational modal analysis method. Ambient excitation was provided from micro tremor ambient vibration data on ground level. Enhanced Frequency Domain Decomposition (EFDD) was used for the output only modal identification. From this study, a good correlation between mode shapes was found. Titanium dioxide applied to the entire outer surface of the scaled concrete structure has an average of 11.78% difference in frequency values and 10.15% in damping ratios, proving that nanomaterials can be used to increase rigidity in structures, in other words, for reinforcement. Another important result determined in the study was the observation of the adherence of titanium dioxide and similar nanomaterials mentioned in the introduction to concrete structure surfaces was at the highest level.
 
Key Words
    EFDD; modal parameter; nanomaterial; operational modal analysis; TiO2
 
Address
Sertaç Tuhta: Ondokuz Mayis University, Faculty of Engineering, Department of Civil Engineering, Atakum/Samsun, Turkey
 
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