Pore pressure development in hybrid fibre-reinforced high strength concrete at elevated temperatures

Bangi, Mugume Rodgers; Horiguchi, Takashi

Cement and Concrete Research, 2011, 41(11), 1150-1156

Permalink : https://hdl.handle.net/2115/47353

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アクセス権
open access
URI
https://hdl.handle.net/2115/47353
タイトル
Pore pressure development in hybrid fibre-reinforced high strength concrete at elevated temperatures
著者
著者名
Bangi, Mugume Rodgers
e-Rad_Researcher
30094816
著者名
Horiguchi, Takashi
言語
英語
キーワード
Temperature
High performance concrete
Fibre reinforcement
Mechanical properties
Spalling
発行日
2011-11
出版者
Elsevier
収録物名
Cement and Concrete Research
巻(号)
41(11)
ページ
1150-1156
抄録
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.
資源タイプ
学術雑誌論文
出版タイプ
Accepted Manuscript
PISSN
0008-8846
関連情報 (isVersionOf)
出版社版DOI
https://doi.org/10.1016/j.cemconres.2011.07.001