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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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Goltermann, Per
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2021Activated Ductile CFRP NSMR Strengtheningcitations
- 2021Activated ductile CFRP NSMR strengtheningcitations
- 2020Ductile response controlled EW CFRP anchor systemcitations
- 2020Ductile response controlled EW CFRP anchor systemcitations
- 2020Shear strength of straight concrete members without shear reinforcement. Reassessment of the effectiveness factors used in the crack sliding theory
- 2019Experimental and numerical studies on the shared activation anchoring of NSMR CFRP applied to RC beams
- 2019Experimental and numerical Studies on the shared Activation Anchoring of NSMR CFRP applied to RC Beams:Seventh Asia-Pacific Conference on FRP in Structures
- 2019Assessment of shear strength of deep RC beams and beams with short shear span without transverse reinforcement
- 2019Experimental and numerical Studies on the shared Activation Anchoring of NSMR CFRP applied to RC Beams
- 2019Shared CFRP activation anchoring method applied to NSMR strengthening of RC beamscitations
- 2016Wood ash used as partly sand and/or cement replacement in mortarcitations
- 2014The Aesthetical quality of SSA-containing mortar and concrete
- 2013Incinerated sewage sludge ash as alternative binder in cement-based materials
- 2012Mechanical anchorage of FRP tendons – A literature reviewcitations
- 2012Reinforced concrete T-beams externally prestressed with unbonded carbon fiber-reinforced polymer tendons
- 2011Numerical Simulation and Experimental Validation of an Integrated Sleeve-Wedge Anchorage for CFRP Rodscitations
- 2011Shear Capacity of Steel and Polymer Fibre Reinforced Concrete Beamscitations
- 2011Shear Capacity of Steel and Polymer Fibre Reinforced Concrete Beamscitations
- 2008In-plane shear test of fibre reinforced concrete panels
Places of action
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article
Activated Ductile CFRP NSMR Strengthening
Abstract
Significant strengthening of concrete structures can be obtained when using adhesively-bonded carbon fiber-reinforced polymer (CFRP) systems. Challenges related to such strengthening methods are; however, the brittle concrete delamination failure, reduced warning, and the consequent inefficient use of the CFRP. A novel ductile near-surface mounted reinforcement (NSMR) CFRP strengthening system with a high CFRP utilization is introduced in this paper. It is hypothesized that the tailored ductile enclosure wedge (EW) end anchors, in combination with low E-modulus and high elongation adhesive, can provide significant strengthening and ductility control. Five concrete T-beams were strengthened using the novel system with a CFRP rod activation stress of approximately 980 MPa. The beam responses were compared to identical epoxy-bonded NSMR strengthened and un-strengthened beams. The linear elastic response was identical to the epoxy-bonded NSMR strengthened beam. In addition, the average deflection and yielding regimes were improved by 220% and 300% (average values), respectively, with an ultimate capacity comparable to the epoxy-bonded NSMR strengthened beam. Reproducible and predictable strengthening effect seems obtainable, where a good correlation between the results and applied theory was reached. The brittle failure modes were prevented, where concrete compression failure and frontal overload anchor failure were experienced when failure was initiated.