Dynamic Responses of Different Concrete Specimens under Elastic Impacts

Through numerical spectral analysis and an experimental verification program, this paper studies the dynamic responses of three commonly used specimens (i.e. 150 × 150 × 150 mm cubes, Ф150 × 300 mm cylinders and Ф100 × 100 mm drilled cores) under elastic impacts in an effort to find a more convenient and efficient way to obtain the actual one- and three-dimensional P-wave speeds of concrete by applying impact-echo tests. It is found from the spectral analysis that the apparent P-wave speeds of the cylinder, cube and core are 99.2%, 91.1% and 94.9% of the theoretical one-dimensional P-wave speed of concrete, respectively. The average apparent P-wave speed of the cubes obtained from the experiment is found to be 90.5% of that of the cylinders, which is almost equal to the theoretical value 91.1% obtained from the spectral analysis. It is also found that reasonable impact durations have no influence on the predominant frequencies of the response spectra of the specimens.

• Record URL:
  https://doi.org/10.2495/CUEE140041
• Availability:
  • Find a library where document is available. Order URL: http://www.witpress.com/elibrary/wit-transactions-on-the-built-environment/157
• Supplemental Notes:
  • Abstract reprinted with permission from WIT Press.
• Corporate Authors:

  WIT Press

  Ashurst Lodge
  Ashurst, Southampton  United Kingdom  SO40 7AA
• Authors:
  • Lu, X B
  • Wu, J Y
  • LI, X L
  • Li, Mei
  • Meng, L J
• Conference:
  • 2014 International Conference on Civil, Urban and Environmental Engineering (CUEE 2014)
  • Location: Beijing , China
  • Date: 2014-8-19 to 2014-8-20
• Publication Date: 2015

Language

• English

Media Info

• Media Type: Web
• Pagination: 12p
• Monograph Title: Advanced Civil, Urban and Environmental Engineering
• Serial:
  • WIT Transactions on the Built Environment
  • Issue Number: 157
  • Publisher: Wessex Institute of Technology
  • ISSN: 1743-3509
  • Serial URL: http://library.witpress.com/pages/listBooks.asp?tID=2

Subject/Index Terms

• TRT Terms: Concrete; Core samples; Cubes; Modulus of elasticity; Specimens; Spectrum analysis
• Candidate Terms: Impact echo tests
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 01571114
• Record Type: Publication
• ISBN: 9781784660451
• Files: TRIS
• Created Date: Jul 28 2015 3:56PM