Effect of the roughness of steel fibre surface on its wettability and the cement paste close to fibre surface

被引：16
|
作者：
Antonova, Anna [1 ]
Eik, Marika [1 ]
Jokinen, Ville [2 ]
Puttonen, Jari [1 ]
机构：
[1] Aalto Univ, Dept Civil Engn, Rakentajanaukio 4 A, Espoo 02150, Finland
[2] Aalto Univ, Dept Chem & Mat Sci, Tietotie 3, Espoo 02150, Finland
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2021年 / 289卷
关键词：
Fibre-matrix interface; Steel fibre; Surface treatment; k-means clustering; Roughness; Contact angle; Wetting; ITZ; INTERFACIAL TRANSITION ZONE; POLYPROPYLENE FIBER; CONTACT ANGLES; MICROSTRUCTURE; PERFORMANCE; CONCRETE; COMPOSITES; RESISTANCE; ITZ;
D O I：
10.1016/j.conbuildmat.2021.123139
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
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 100 lm 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. (C) 2021 The Author(s). Published by Elsevier Ltd.
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页数：11
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