Study of stress-induced velocity variation in concrete under direct tensile force and monitoring of the damage level by using thermally-compensated Coda Wave Interferometry

by Yuxiang Zhang, Odile Abraham, Frédéric Grondin, Ahmed Loukili, Vincent Tournat, Alain Le Duff, Bertrand Lascoup, Olivier Durand
Abstract:
In this paper, we describe an experimental study of concrete behavior under a uniaxial tensile load by use of the thermally-compensated Coda Wave Interferometry (CWI) analysis. Under laboratory conditions, uniaxial tensile load cycles are imposed on a cylindrical concrete specimen, with continuous ultrasonic measurements being recorded within the scope of bias control protocols. A thermally-compensated CWI analysis of multiple scattering waves is performed in order to evaluate the stress-induced velocity variation. Concrete behavior under a tensile load can then be studied, along with CWI results from both its elastic performance (acoustoelasticity) and plastic performance (microcracking corresponding to the Kaiser effect). This work program includes a creep test with a sustained, high tensile load; the acoustoelastic coefficients are estimated before and after conducting the creep test and then used to demonstrate the effect of creep load.
Reference:
Yuxiang Zhang, Odile Abraham, Frédéric Grondin, Ahmed Loukili, Vincent Tournat, Alain Le Duff, Bertrand Lascoup, Olivier Durand, « Study of stress-induced velocity variation in concrete under direct tensile force and monitoring of the damage level by using thermally-compensated Coda Wave Interferometry », In Ultrasonics, vol. 52, pp. 1038 – 1045, 2012.
Bibtex Entry:
@ARTICLE{ZhangUltrasonics2012,
  author = {Yuxiang Zhang and Odile Abraham and Fr'ed'eric Grondin and Ahmed Loukili
	and Vincent Tournat and Le Duff, Alain and Bertrand Lascoup and Olivier
	Durand},
  title = {Study of stress-induced velocity variation in concrete under direct
	tensile force and monitoring of the damage level by using thermally-compensated
	Coda Wave Interferometry},
  journal = {Ultrasonics},
  year = {2012},
  volume = {52},
  pages = {1038 -- 1045},
  month = dec,
  abstract = {In this paper, we describe an experimental study of concrete behavior
	under a uniaxial tensile load by use of the thermally-compensated
	Coda Wave Interferometry (CWI) analysis. Under laboratory conditions,
	uniaxial tensile load cycles are imposed on a cylindrical concrete
	specimen, with continuous ultrasonic measurements being recorded
	within the scope of bias control protocols. A thermally-compensated
	CWI analysis of multiple scattering waves is performed in order to
	evaluate the stress-induced velocity variation. Concrete behavior
	under a tensile load can then be studied, along with CWI results
	from both its elastic performance (acoustoelasticity) and plastic
	performance (microcracking corresponding to the Kaiser effect). This
	work program includes a creep test with a sustained, high tensile
	load; the acoustoelastic coefficients are estimated before and after
	conducting the creep test and then used to demonstrate the effect
	of creep load.},
  keywords = {Coda Wave Interferometry, Creep damage, Concrete, Acoustoelasticity,
	Microcracking},
  owner = {gplantier},
  timestamp = {2012.11.24},
  url = {http://www.sciencedirect.com/science/article/pii/S0041624X12001643}
}