Radiographic testing for rebar and defects within reinforced concrete component

Peng Chi Peng, Chung Yue Wang, Chin Kuo Huang, Ming Cheng Chen

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


To ensure the safety of structure, emphasis has been increasingly placed on the inspection for deteriorated reinforced concrete structures. However, it is still very difficult to achieve expected accuracy in the inspection for such highly non-homogeneous material. Motivated by this, an inspective technique to measure the size of the rebar in reinforced concrete structures is proposed. The proposed technique, which takes advantage of the capability of radioactive rays to penetrate concrete as well as the principles of projective geometry, can predict the size and location of the inspected object based on the position of an iron ball whose size is known. As indicated by the experimental results, the proposed technique can precisely locate and size the rebar in reinforced concrete structures. The inspected results are presented by images, so some personal errors in physical measurement reading are eliminated.

Original languageEnglish
Pages (from-to)389-399
Number of pages11
JournalJournal of the Chinese Institute of Civil and Hydraulic Engineering
Issue number3
StatePublished - Sep 2007


  • Deflect
  • Radiographic testing
  • Reinforced concrete
  • Void


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