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Benefits of Fe 2O3 nanoparticles in concrete mixing matrix
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TLDR
In this paper, the authors investigated the compressive strength and workability of concrete by pa rtial replacement of cement with nano-phase Fe 2O3 particles with four different contents of 0.5, 0.1, 1.5 and 2.0% by weight.Abstract:
The purpose of this study is to investigate the com pressive strength and workability of concrete by pa rtial replacement of cement with nano-phase Fe 2O3 particles. Fe 2O3 nanoparticles with the average diameter of 15 nm were used with four different contents of 0.5%, 0.1%, 1.5% an d 2.0% by weight. The results showed that the use o f nano-Fe 2O3 particles up to maximum replacement level of 2.0% produces concrete with improved strength. However, the ultimat e strength of concrete was gained at 1.0% of cement replacement. The workability of fresh concrete was decreased by increasing the content of Fe 2O3 nanoparticles. It is concluded that partial replac ement of cement with nanophase Fe 2O3 particles improves the compressive strength of concrete but decreases its workability. (Journal of American Science 2010; 6(4):102-106). (ISSN: 1545-1003).read more
Citations
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References
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Microstructure of cement mortar with nano-particles
TL;DR: In this paper, the mechanical properties of nano-Fe2O3 and nano-SiO2 cement mortars were experimentally studied and the experimental results showed that the compressive and flexural strengths measured at the 7th day and 28th day of the cement mortar mixed with the nano-particles were higher than that of a plain cement mortar.
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Characteristics of cement mortar with nano-SiO2 particles
TL;DR: In this paper, the properties of cement mortars with nano-SiO 2 were experimentally studied, and the results showed that the compressive strength of mortars containing nano SiO 2 particles was significantly higher than those of those containing silica fume at 7 and 28 days.
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The influence of mineral admixtures on the rheology of cement paste and concrete
TL;DR: In this paper, rheological tests on cement paste were used to successfully select the type and dosage of mineral admixtures that improved concrete workability, and the conclusion reached based on the cement paste tests were validated by concrete slump tests.
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The nano-mechanical signature of Ultra High Performance Concrete by statistical nanoindentation techniques
Luca Sorelli,Georgios Constantinides,Georgios Constantinides,Franz-Josef Ulm,François Toutlemonde +4 more
TL;DR: In this article, the nano-mechanical properties of the phases governing the UHPC microstructure were characterized by means of a novel statistical nanoindentation technique; then, those nanoscale properties were upscale to the macroscopic scale of engineering applications.