Final_Revised Manuscript TEOS_CBM.pdf (1.56 MB)
Ultra-high performance fibre-reinforced cementitious composite with steel microfibres functionalized with silane
journal contribution
posted on 2018-08-17, 10:11 authored by Cezar Augusto Casagrande, Sergio Pialarissi-CavalaroSergio Pialarissi-Cavalaro, Wellington Longuini Repette© 2018 Elsevier Ltd This paper explores the effect of fibre functionalization with tetraethoxysilane (TEOS) in the microstructure and mechanical property of ultra-high performance cement composites with steel fibres. Fibres treated with three concentrations of TEOS were evaluated by pullout tests and SEM/EDS analysis. Mixes with treated fibres showed up to 35.6% increase in bond strength and up to 49.5% reduction in the crack opening at the peak pullout load in comparison with reference mixes containing untreated fibres. The Si/Ca ratios in the fibre-matrix transition zone increases with the increment of the concentration of TEOS in the treatment of the fibre. This indicates an increase of C-S-H at the interface that justifies the enhanced mechanical performance.
History
School
- Architecture, Building and Civil Engineering
Published in
Construction and Building MaterialsVolume
178Pages
495 - 506Citation
CASAGRANDE, C.A., CAVALARO, S.H. and REPETTE, W.L., 2018. Ultra-high performance fibre-reinforced cementitious composite with steel microfibres functionalized with silane. Construction and Building Materials, 178. pp. 495-506.Publisher
© ElsevierVersion
- AM (Accepted Manuscript)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Acceptance date
2018-05-22Publication date
2018Notes
This paper was accepted for publication in the journal Construction and Building Materials and the definitive published version is available at https://doi.org/10.1016/j.conbuildmat.2018.05.167ISSN
0950-0618Publisher version
Language
- en