Effect of applied load on the non-destructive measurement of concrete strength

E. Mahmoudabadi, U. Amjad, T. Kundu, H. Saadatmanesh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Nondestructive measurement of the concrete strength is an important topic of research. Among different nondestructive testing (NDT) methods the ultrasonic pulse velocity (UPV) technique is the most popular method for concrete strength estimation. While measuring concrete strength by this method almost all researchers have neglected the effect of applied stress or load on the concrete member. In this investigation attempts were made to properly incorporate the effect of the applied load on the strength prediction of concrete specimens from UPV value. To achieve this goal, 4 groups of concrete specimens with different values of final strength were made. Materials used for making cylindrical specimens of 3 inch diameter and 6 inch height included regular Portland cement, water and two types of aggregate - fine and coarse. After applying the load on the specimen in multiple steps - up to 70% of its failure strength - the time of flight (TOF) value was measured for every loading step. The recorded results showed that applied load on the member has significant effect on the measured UPV value on concrete specimens. Therefore, to find the strength of the concrete from the UPV value, the applied load on the sample should be considered as an important factor that cannot be neglected.

Original languageEnglish (US)
Title of host publicationHealth Monitoring of Structural and Biological Systems 2014
PublisherSPIE
ISBN (Print)9780819499905
DOIs
StatePublished - Jan 1 2014
EventHealth Monitoring of Structural and Biological Systems 2014 - San Diego, CA, United States
Duration: Mar 10 2014Mar 13 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9064
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherHealth Monitoring of Structural and Biological Systems 2014
CountryUnited States
CitySan Diego, CA
Period3/10/143/13/14

Keywords

  • Concrete strength
  • Nondestructive measurement
  • Time of flight (TOF)
  • Ultrasonic pulse velocity (UPV)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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