Abstract
Microstructure recovery plays an important role in restoring the performance of concrete damaged by fire. This research applied X-ray CT and image analysis techniques to non-destructively examine the internal microstructure of high-strength concrete in order to clarify the effects of heating and re-curing on microstructure characteristics. Heating caused an increase in total pore space due to an increase in connectivity caused by the formation of cracks in the mortar-aggregate interface and bridging cracks. Water re-curing, however, was effective in recovering microstructure through the reduction in connected pore space, with most recovery occurring within 7 days.
| Original language | English |
|---|---|
| Pages (from-to) | 37-46 |
| Number of pages | 10 |
| Journal | Construction and Building Materials |
| Volume | 67 |
| DOIs | |
| Publication status | Published - 2014 |
| Externally published | Yes |
Keywords
- Connectivity
- High temperature
- High-strength concrete
- Microstructure
- Non-destructive evaluation
- Re-curing
- X-ray CT
ASJC Scopus subject areas
- Civil and Structural Engineering
- Building and Construction
- Materials Science(all)
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Henry, M., Darma, I. S., & Sugiyama, T. (2014). Analysis of the effect of heating and re-curing on the microstructure of high-strength concrete using X-ray CT. Construction and Building Materials, 67, 37-46. https://doi.org/10.1016/j.conbuildmat.2013.11.007