Observation of recycled aggregate structure using X-ray CT

M. Henry, T. Sugiyama, T. Iyoda, K. Sato

Research output: Contribution to conferencePaperpeer-review

Abstract

The use of low quality recycled aggregates in concrete reduces performance and increases variation. Therefore, it is important to examine the performance and safety of concrete using low quality recycled aggregates from a variety of perspectives. This study applied X-ray CT and image analysis to examine the structure of recycled aggregates in order to explore how X-ray CT may be applied to recycled aggregate concrete. It was found that recycled aggregates from different sources showed widely varying X-ray CT absorption values, which makes it difficult to carry out further analyses unless there are clear differences in the material phases. However, it is possible to estimate the amount of residual mortar through segmentation between the solid and void phases.

Original languageEnglish
Publication statusPublished - 2013 Jan 1
Event13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013 - Sapporo, Japan
Duration: 2013 Sep 112013 Sep 13

Conference

Conference13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013
CountryJapan
CitySapporo
Period13/9/1113/9/13

Keywords

  • Aggregate quality
  • Recycled aggregate
  • Segmentation
  • Water absorption
  • X-ray CT

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction

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