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- W3136293269 abstract "Iron tailing powder (ITP) is considered to have the potential to replace cement to manufacture ultra-high-performance concrete (UHPC). However, the performance of UHPC with the addition of ITP after exposure to high temperatures is more complex. This investigation prepares seven UHPC formulations by introducing different contents of ITP and investigates the mechanical behavior (residual strength), bound water content, and microstructural properties (crystalline and amorphous phases, chemical structure, and morphology) of UHPC subjected to elevated temperatures. The experimental results show that the addition of ITP postpones the spalling of concrete when exposed to high temperatures. The concrete incorporating 15% ITP maintains 53.8% of its original strength at 800°C, unlike the concrete without ITP that maintains 31.6% of its original strength. The addition of ITP increases the number of micropores/cracks in concrete and helps release the vapor pressure caused by water evaporation. The findings of this investigation highlight the potential application of ITP for future UHPC design and manufacture." @default.
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- W3136293269 date "2021-03-15" @default.
- W3136293269 modified "2023-09-26" @default.
- W3136293269 title "The Role of Iron Tailing Powder in Ultra-High-Strength Concrete Subjected to Elevated Temperatures" @default.
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- W3136293269 doi "https://doi.org/10.1155/2021/6681429" @default.
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