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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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He, Shan
Delft University of Technology
in Cooperation with on an Cooperation-Score of 37%
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Publications (7/7 displayed)
- 2024Structural behaviour of reinforced concrete beams with self-healing cover zone as lost formworkcitations
- 2024Correction
- 2023Effect of matrix self-healing on the bond-slip behavior of micro steel fibers in ultra-high-performance concretecitations
- 2023An enhanced lattice beam element model for the numerical simulation of rate-dependent self-healing in cementitious materials.citations
- 2023Strain Hardening Cementitious Composite in Reinforced Concrete Cover Zone for Crack Width Control
- 2023An enhanced lattice beam element model for the numerical simulation of rate-dependent self-healing in cementitious materialscitations
- 2023Structural performance of reinforced concrete beams with self-healing cover zonecitations
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conferencepaper
Structural performance of reinforced concrete beams with self-healing cover zone
Abstract
In the current study, experiments were carried out to investigate the structural performance of reinforced concrete (RC) beams with a self-healing cover zone. The cover zone consists of a 1.5-cm-thick layer of bacteria-embedded strain hardening cementitious composite (SHCC) for a combination of crack width control and crack healing. The aim is to bring together two emerging technologies (i.e., self-healing and strain-hardening) that show great potential for realizing highly efficient concrete structures. RC beam without the self-healing cover was also prepared as the control specimen for comparison purposes. The experimental program includes loading the beams to failure in four-point bending configuration and sawing the beams to segments for crack pattern analysis and crack healing. Results show that the beams with self-healing cover exhibited a 45-60% improvement in structural capacity. The crack patterns of the hybrid beams were also largely modified. While the reference beam formed only a few major cracks, the hybrid beams formed around 40 fine cracks in the constant bending moment region with an average crack width smaller than 0.2 mm even at maximum load. By having an improved cracking behavior and an enhanced self-healing capacity, it is expected that the beams with a self-healing cover will possess an extended service life at the expense of minimal additional cost. ; Materials and Environment ; Concrete Structures