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- W3096901589 abstract "This work focuses on investigating the behavior of micro and nanoFe 2 O 3 in concrete through the study of microscopy, compressive strength and flexural strength. Seven mixes of concrete are prepared. Three of which include micro Fe 2 O 3 comprising 1%, 3% and 5% as partial substitutions of cement weight and the other three mixes containing 1%, 3% and 5% nanoFe 2 O 3 as a partial substitutions of cement weight, as well as the reference mix. SEM study exhibits that the microstructure of sample produced with micro Fe 2 O 3 show more uniformity and dense compared with reference sample. However, existence of micro cracks in the microstructure in mixes with micro Fe 2 O 3 is clear especially with increasing micro Fe 2 O 3 content to 3% and 5%. In mixes with nanoFe 2 O 3 , the new shapes of needle like crystals and flower like crystals can be distinguished. The presence of these types of crystals in thrives amount approve that nanoFe 2 O 3 producing new phases of gel. Hence, the microstructure of samples is condensed, and with the increasing of nanoFe 2 O 3 content the microstructure is completely compacted. The results of compressive strength and flexural strength showed that the mechanical properties are related to microstructure properties. When micro Fe 2 O 3 is used, the mechanical properties drop obviously. While, the mechanical properties are improved in mixes containing nanoparticles in comparison with the control mix." @default.
- W3096901589 created "2020-11-09" @default.
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- W3096901589 date "2020-10-01" @default.
- W3096901589 modified "2023-09-24" @default.
- W3096901589 title "Assessment the Influence of Fe<sub>2</sub>O<sub>3</sub> Micro and Nanoparticles on Properties of Concrete" @default.
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- W3096901589 doi "https://doi.org/10.4028/www.scientific.net/kem.870.29" @default.
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