Influence of flexible fibers on the yield stress of fresh cement pastes and mortars
In the present work, we aim at improving our understanding of the effect of synthetic flexible fibers on the rheology of fresh cement-based suspensions. We first measure the way that synthetic fibers do increase the yield stress of various fresh cement pastes and mortars. We then measure, using micr...
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| Veröffentlicht in: | Cement and concrete research 2020-12, Vol.138, p.106221, Article 106221 |
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| container_title | Cement and concrete research |
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| creator | Sultangaliyeva, Fariza Carré, Hélène La Borderie, Christian Zuo, Wenqiang Keita, Emmanuel Roussel, Nicolas |
| description | In the present work, we aim at improving our understanding of the effect of synthetic flexible fibers on the rheology of fresh cement-based suspensions. We first measure the way that synthetic fibers do increase the yield stress of various fresh cement pastes and mortars. We then measure, using micro CT, the way these fibers are deformed in a fresh paste. Finally, we propose a simple physical model allowing for the prediction of the fibers conformation as a function of their geometry, their elastic properties and the rheology of the cement-based material, into which they are dispersed. We validate this model on our results and discuss its application at the scale of mortars and concretes. |
| doi_str_mv | 10.1016/j.cemconres.2020.106221 |
| format | Article |
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| ispartof | Cement and concrete research, 2020-12, Vol.138, p.106221, Article 106221 |
| issn | 0008-8846 1873-3948 |
| language | eng |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Cement Cement paste Elastic properties Engineering Sciences Mortars (material) Rheological properties Rheology Synthetic fibers Yield strength Yield stress |
| title | Influence of flexible fibers on the yield stress of fresh cement pastes and mortars |
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