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- W4285082029 endingPage "104657" @default.
- W4285082029 startingPage "104657" @default.
- W4285082029 abstract "Many studies on cement-based materials have addressed their deterioration at high temperatures. However, improvements in the performance of fiber-reinforced cementitious composites (FRCCs) have been observed after exposure to temperatures between 200 and 400 °C. This behavior needs to be further investigated as existing studies have primarily investigated the degradation of properties, without a focus on optimization. Hence, this study systematically investigated the FRCC performance improvement after exposure to high temperatures through a multiscale perspective, from the global behavior to the microstructure. The results showed that heat treatment improved the flexural behavior of the FRCC, mainly its strength and energy absorption capacity. The compressive and flexural strengths of the non-fibrous matrix also increased. The increments in the load and energy of fiber pull-out indicated that the fiber-matrix bonding was improved. A microstructural investigation confirmed an intact fiber-matrix interface and a cohesive cementitious matrix. Additionally, the main mechanisms of this enhanced behavior were related to matrix densification, interface optimization, and fiber clamping. These aspects, acting synergistically, promote a more effective interconnection between the composite components, improving the residual performance." @default.
- W4285082029 created "2022-07-14" @default.
- W4285082029 creator A5031996597 @default.
- W4285082029 creator A5040240318 @default.
- W4285082029 creator A5049916271 @default.
- W4285082029 creator A5076687283 @default.
- W4285082029 date "2022-10-01" @default.
- W4285082029 modified "2023-10-10" @default.
- W4285082029 title "A multiscale investigation on the performance improvement of fiber-reinforced cementitious composites after exposure to high temperatures" @default.
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- W4285082029 doi "https://doi.org/10.1016/j.cemconcomp.2022.104657" @default.
- W4285082029 hasPublicationYear "2022" @default.
- W4285082029 type Work @default.