| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 6712925 | Construction and Building Materials | 2018 | 12 Pages |
Abstract
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.
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Authors
Cézar Augusto Casagrande, Sergio Henrique Pialarissi Cavalaro, Wellington Longuini Repette,