Experimental characterization of ultrasonic nonlinearity in concrete under cyclic change of prestressing force

Cited 2 time in webofscience Cited 0 time in scopus
  • Hit : 186
  • Download : 0
In this paper, an experimental study was conducted to investigate the effect of varying prestressing force on the nonlinearity of concrete. Prestressed concrete beams, which have been rarely studied in terms of ultrasonic nonlinearity, were prepared and the nonlinear resonant ultrasonic method was adopted. When the prestressing force changes, the stress condition of the concrete inside the beam is affected. This leads to the generation of micro-cracks and a change of the mechanical properties, and as such it is necessary to introduce a nonlinear ultrasonic technique that sensitively reflects microstructural change. In the experiment, a repetitive prestressing load history, which includes maximum levels of 45%, 60%, and 75% based on the compressive strength, was designed to evaluate the effects of repetitive loading and different levels of loading on the nonlinearity. A comparison with the measurement results of the linear ultrasonic method was also carried out to verify the stress dependent change of nonlinearity induced by external loads. With the experimental results, the possibility of ultrasonic nonlinearity as an indicator of prestressing force is evaluated.
Publisher
TECHNO-PRESS
Issue Date
2017-05
Language
English
Article Type
Article
Keywords

CODA WAVE INTERFEROMETRY; DAMAGE; VELOCITY; BEAMS; GENERATION

Citation

COMPUTERS AND CONCRETE, v.19, no.5, pp.599 - 607

ISSN
1598-8198
DOI
10.12989/cac.2017.19.5.599
URI
http://hdl.handle.net/10203/241138
Appears in Collection
CE-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 2 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0