Experimental Investigations of the Bond Behavior between Carbon Rebars and Concrete in Germany
Abstract
:1. Introduction
2. Bond Behavior of Non-Metallic (Carbon) Rebars in Concrete
3. Experimental Test Series 1: Various Carbon Rebars
3.1. General
3.2. Materials
3.3. Sample Preparation, Test Setup, and Execution
3.4. Test Results
3.5. Comparison
4. Experimental Test Series 2: Further Investigation
4.1. General
4.2. Materials
4.3. Sample Preparation, Test Setup, and Execution
4.4. Experimental Results: Concrete Strength
4.5. Experimental Results: Bond Length
4.6. Experimental Results: Influence of the Test Speed
5. Further Research
6. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Binder | Quartz Fine Sand | Sand 0/2 | Aggregate 2/5 | Superplasticizer | Water |
---|---|---|---|---|---|
(kg/m³) | (kg/m³) | (kg/m³) | (kg/m³) | (kg/m³) | (kg/m³) |
621 | 250 | 530 | 837 | 16 | 145 |
Name (-) | Rebar (-) | Specimen No. (-) | lb (mm) | dv (mm) | Age (d) | τmax (N/mm2) | so,max (mm) | fcm (N/mm2) | fctm,fl (N/mm2) |
---|---|---|---|---|---|---|---|---|---|
V-1-1 | 1 | 1 | 40 | 8 | 10 | 4.3 | 0.2 | 107.3 | 10.4 |
V-1-2 | 1 | 1 | 40 | 8 | 10 | 4.3 | 0.3 | 107.3 | 10.4 |
V-2-1 | 2 | 1 | 40 | 8 | 14 | 8.1 | 0.2 | 108.2 | 11.2 |
V-2-2 | 2 | 1 | 40 | 8 | 14 | 6.9 | 0.2 | 108.2 | 11.2 |
V-2-3 | 2 | 1 | 40 | 8 | 14 | 10.7 | 0.3 | 108.2 | 11.2 |
V-3-1 | 3 | 1 | 45 | 9 | 11 | 6.0 | 10.9 | 108.7 | 10.0 |
V-3-2 | 3 | 1 | 45 | 9 | 11 | 7.4 | 10.8 | 108.7 | 10.0 |
V-3-3 | 3 | 1 | 45 | 9 | 11 | 5.8 | 5.7 | 108.7 | 9.98 |
V-4-1 | 4 | 1 | 30 | 6 | 12 | 20.0 | 5.7 | 112.4 | 9.8 |
V-4-2 | 4 | 1 | 30 | 6 | 12 | 21.5 | 4.2 | 112.4 | 9.8 |
V-4-3 | 4 | 1 | 30 | 6 | 12 | 19.9 | 10.2 | 112.4 | 9.8 |
V-4-4 | 4 | 1 | 40 | 8 | 12 | 21.2 | 6.1 | 112.4 | 9.8 |
V-4-5 | 4 | 1 | 40 | 8 | 12 | 21.1 | 5.3 | 112.4 | 9.8 |
V-4-6 | 4 | 1 | 40 | 8 | 12 | 21.2 | 6.7 | 112.4 | 9.8 |
V-5-1 | 5 | 1 | 30 | 6 | 11 | 21.5 | 6.5 | 108.7 | 10.0 |
V-5-2 | 5 | 1 | 30 | 6 | 11 | 28.9 | 2.6 | 108.7 | 10.0 |
V-6-1 | 6 | 2 | 50 | 10 | 12 | 29.1 | 1.1 | 112.4 | 9.8 |
V-6-2 | 6 | 2 | 50 | 10 | 12 | 26.75 | 1.4 | 112.4 | 9.8 |
V-6-3 | 6 | 2 | 50 | 10 | 12 | 28.9 | 0.9 | 112.4 | 9.8 |
V-7-1 | 7a | 1 | 40 | 8 | 13 | 36.0 | 0.5 | 115.0 | 10.1 |
V-7-2 | 7a | 1 | 40 | 8 | 13 | 38.05 | 0.6 | 115.0 | 10.1 |
V-8-1 | 8 | 1 | 46.5 | 9.3 | 12 | 11.7 | 2.3 | 111.5 | 9.9 |
V-8-2 | 8 | 1 | 46.5 | 9.3 | 12 | 11.0 | 1.7 | 111.5 | 9.9 |
V-8-3 | 8 | 1 | 46.5 | 9.3 | 12 | 11.2 | 1.8 | 111.5 | 9.9 |
V-9-1 | 9 | 1 | 20 | 10 | 11 | 38.0 | 0.3 | 108.7 | 10.0 |
V-9-2 | 9 | 1 | 20 | 10 | 11 | 40.1 | 0.4 | 108.7 | 10.0 |
V-9-3 | 9 | 1 | 20 | 10 | 11 | 40.0 | 0.3 | 108.7 | 10.0 |
Name | Compressive Strength | Flexural Tensile Strength |
---|---|---|
(-) | (N/mm2) | (N/mm2) |
NC1 | 20.7 | 4.0 |
NC2 | 56.8 | 8.6 |
HC1 | 119.1 | 10.6 |
UHPC | 159.7 | 14.2 |
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Schumann, A.; May, S.; May, M.; Schütze, E.; Schladitz, F.; Ehlig, D. Experimental Investigations of the Bond Behavior between Carbon Rebars and Concrete in Germany. Buildings 2023, 13, 2932. https://doi.org/10.3390/buildings13122932
Schumann A, May S, May M, Schütze E, Schladitz F, Ehlig D. Experimental Investigations of the Bond Behavior between Carbon Rebars and Concrete in Germany. Buildings. 2023; 13(12):2932. https://doi.org/10.3390/buildings13122932
Chicago/Turabian StyleSchumann, Alexander, Sebastian May, Maximilian May, Elisabeth Schütze, Frank Schladitz, and Daniel Ehlig. 2023. "Experimental Investigations of the Bond Behavior between Carbon Rebars and Concrete in Germany" Buildings 13, no. 12: 2932. https://doi.org/10.3390/buildings13122932