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Pore pressure development in hybrid fibre-reinforced high strength concrete at elevated temperatures
| Title: | Pore pressure development in hybrid fibre-reinforced high strength concrete at elevated temperatures |
| Authors: | Bangi, Mugume Rodgers Browse this author | | Horiguchi, Takashi Browse this author →KAKEN DB |
| Keywords: | Temperature | | High performance concrete | | Fibre reinforcement | | Mechanical properties | | Spalling |
| Issue Date: | Nov-2011 |
| Publisher: | Elsevier |
| Journal Title: | Cement and Concrete Research |
| Volume: | 41 |
| Issue: | 11 |
| Start Page: | 1150 |
| End Page: | 1156 |
| Publisher DOI: | 10.1016/j.cemconres.2011.07.001 |
| Abstract: | The present experimental work investigates the build-up of pore pressure at different depths of High Strength Concrete (HSC) and Hybrid-Fibre-Reinforced High Strength Concrete (HFRHSC) when exposed to different heating rates. First, the effect of the measurement technique on maximum pore pressures measured was evaluated. The pressure measurement technique which utilized a sintered metal and silicon oil was found to be the most effective technique for pore pressure measurement. Pore pressure measurements carried out showed that addition of polypropylene fibres is very effective in mitigation of spalling and build-up of pore pressure inside heated HSC. Addition of steel fibres plays some role in pore pressure reduction at relatively higher pressures in deeper regions of concrete during fast heating. Pore pressure development is highly influenced by the rate of heating with fast heating leading to higher pore pressures in the deeper regions of concrete compared to slow heating. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/47353 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 堀口 敬
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