Observation of recycled aggregate structure using X-ray CT

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

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

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
Title of host publicationProceedings of the 13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013
PublisherHokkaido University collection of Scholarly Academic Papers, HUSCAP
Publication statusPublished - 2013
Event13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013 - Sapporo
Duration: 2013 Sep 112013 Sep 13

Other

Other13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013
CitySapporo
Period13/9/1113/9/13

Fingerprint

X rays
Concretes
Concrete aggregates
Mortar
Image analysis

Keywords

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

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction

Cite this

Henry, M., Sugiyama, T., Iyoda, T., & Sato, K. (2013). Observation of recycled aggregate structure using X-ray CT. In Proceedings of the 13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013 Hokkaido University collection of Scholarly Academic Papers, HUSCAP.

Observation of recycled aggregate structure using X-ray CT. / Henry, M.; Sugiyama, T.; Iyoda, Takeshi; Sato, K.

Proceedings of the 13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013. Hokkaido University collection of Scholarly Academic Papers, HUSCAP, 2013.

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

Henry, M, Sugiyama, T, Iyoda, T & Sato, K 2013, Observation of recycled aggregate structure using X-ray CT. in Proceedings of the 13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013. Hokkaido University collection of Scholarly Academic Papers, HUSCAP, 13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013, Sapporo, 13/9/11.
Henry M, Sugiyama T, Iyoda T, Sato K. Observation of recycled aggregate structure using X-ray CT. In Proceedings of the 13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013. Hokkaido University collection of Scholarly Academic Papers, HUSCAP. 2013
Henry, M. ; Sugiyama, T. ; Iyoda, Takeshi ; Sato, K. / Observation of recycled aggregate structure using X-ray CT. Proceedings of the 13th East Asia-Pacific Conference on Structural Engineering and Construction, EASEC 2013. Hokkaido University collection of Scholarly Academic Papers, HUSCAP, 2013.
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