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Effect of the roughness of steel fibre surface on its wettability and the cement paste close to fibre surface
Highlights Hysteresis increased along with the fibre surface roughness. The number of large pores was higher near the smooth fibres than near the rough ones. Porosity close to the fibre decreased as the fibre roughness increased. Width of the boundary zone was affected by the roughness of the fibre surface.
Abstract This study experimentally examines the relationship between fibre surface roughness, its wettability, and the microstructure of the cement paste close to the fibre. Results indicate that the amount of water that adheres to or is retained by the fibre surface grows with the increase in roughness. The distributions of porosity and of unhydrated cement grains, which were produced through analysis of BSE images with a k-means clustering algorithm up to from fibre surface, revealed a decrease in both large pores and porosity when roughness increased but not a clear effect on the distribution of unhydrated cement grains.
Effect of the roughness of steel fibre surface on its wettability and the cement paste close to fibre surface
Highlights Hysteresis increased along with the fibre surface roughness. The number of large pores was higher near the smooth fibres than near the rough ones. Porosity close to the fibre decreased as the fibre roughness increased. Width of the boundary zone was affected by the roughness of the fibre surface.
Abstract This study experimentally examines the relationship between fibre surface roughness, its wettability, and the microstructure of the cement paste close to the fibre. Results indicate that the amount of water that adheres to or is retained by the fibre surface grows with the increase in roughness. The distributions of porosity and of unhydrated cement grains, which were produced through analysis of BSE images with a k-means clustering algorithm up to from fibre surface, revealed a decrease in both large pores and porosity when roughness increased but not a clear effect on the distribution of unhydrated cement grains.
Effect of the roughness of steel fibre surface on its wettability and the cement paste close to fibre surface
Antonova, Anna (author) / Eik, Marika (author) / Jokinen, Ville (author) / Puttonen, Jari (author)
2021-03-18
Article (Journal)
Electronic Resource
English
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