BROWSE

Related Researcher

Author

Kim, Jae Hong
Research Group for Concrete Structures and Materials
Research Interests
  • Mechanics of Concrete, Rheology, Structural Analysis, Construction Performance

ITEM VIEW & DOWNLOAD

Characterization of thermally damaged concrete using a nonlinear ultrasonic method

Cited 5 times inthomson ciCited 4 times inthomson ci
Title
Characterization of thermally damaged concrete using a nonlinear ultrasonic method
Author
Yim, Hong JaeKim, Jae HongPark, Sun-JongKwak, Hyo-Gyoung
Keywords
Concrete strength; Contact type; Damaged concretes; Multiscales; Non-linearity parameter; Nonlinear ultrasonic; Quantitative measures; Thermal damage; Ultrasonic methods; Velocity variations
Issue Date
201211
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
CEMENT AND CONCRETE RESEARCH, v.42, no.11, pp.1438 - 1446
Abstract
Thermal damage in concrete usually induces contact-type defects, which result in degradation of the concrete's performance. This paper attempts to visualize the thermal damage in a multiscale, and characterizes the thermally damaged concrete using a nonlinear ultrasonic method. An impact-modulation method is used to obtain nonlinearity parameters, as a quantitative measure of contact-type defects, and shows better sensitivity than phase velocity variation as a linear ultrasonic method for thermally damaged concrete. The measured nonlinearity parameter is compared with the permeable pores, which reflect the occurrence of opening and pores in thermally damaged concrete. Degradation of concrete strength due to thermal damage is also assessed via the measurement.
URI
Go to Link
DOI
http://dx.doi.org/10.1016/j.cemconres.2012.08.006
ISSN
0008-8846
Appears in Collections:
UEE_Journal Papers

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qr_code

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU