Test and Analysis of Concrete Beams Reinforced by Polyurethane Concrete–Prestressed Steel Wires (PUC–PSWs)
Abstract
:1. Introduction
2. Materials
2.1. Concrete and Steel Bar
2.2. Polyurethane Concrete
2.3. Steel Wires
3. Test Beam Design
3.1. Design of Test Beam
3.2. Hardening Procedure
4. Loads and Measurements
5. Test Results and Analysis
5.1. Load–Displacement Curves
5.2. Cracks
5.3. Yield Load and Ultimate Load
5.4. Strain Analysis
6. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Chemical Composition | Percentage (%) |
---|---|
Polyether | 25 |
Isocyanate | 25 |
Portland cement | 45 |
Molecular sieve | 5 |
Group | Beam Number | Number of Steel Wire | Prestress (MPa) | Embedded Material | Material Thickness (mm) | Anchorage Form | Preload | Reinforcement under Load |
---|---|---|---|---|---|---|---|---|
Control beam | CB | - | - | - | - | - | - | - |
PSW | A1 | 5 | 700 | - | - | Anchor gear | - | - |
A2 | 5 | 700 | Mortar | 20 | Anchor gear + Mortar | - | - | |
A2-1 | 7 | 700 | Mortar | 20 | Anchor gear + Mortar | - | - | |
A3 | 5 | 700 | Mortar | 20 | Anchor gear + Mortar | Preload | - | |
PUC–PSW | A4 | 0 | 700 | PUC | 20 | - | - | - |
A5 | 5 | 700 | PUC | 20 | Anchor gear + PUC | - | - | |
A6 | 5 | 700 | PUC | 20 | PUC | - | - | |
A7 | 5 | 700 | PUC | 20 | Anchor gear + PUC | Preload | - | |
A8 | 5 | 700 | PUC | 30 | Anchor gear + PUC | - | - | |
A9 | 2 | 700 | PUC | 20 | Anchor gear + PUC | - | - | |
A9-1 | 2 | 700 | PUC | 25 | Anchor gear + PUC | - | - |
Beam Number | Cross Section | Beam Number | Cross Section |
---|---|---|---|
A1 | A5, A6, A7 | ||
A2, A3 | A8 | ||
A2-1 | A9 | ||
A4 | A9-1 |
Group Number | Beam Number | Cracking Load (kN) | Increase Ratio (%) | Yield Load (kN) | Increase Ratio (%) | Ultimate Load (kN) | Increase Ratio (%) |
---|---|---|---|---|---|---|---|
Control beam | CB | 20 | - | 74.3 | - | 101.0 | - |
Steel wire | A1 | 40 | 100 | 91.4 | 23.0 | 143.1 | 41.7 |
A2 | 40 | 100 | 96.7 | 30.1 | 141.3 | 39.9 | |
A2-1 | 50 | 150 | 103.2 | 38.9 | 161.8 | 60.2 | |
A3 | - | - | 94.1 | 26.6 | 144.5 | 43.1 | |
PUC–PSW | A4 | 25 | 25 | 98.8 | 33.0 | 168.7 | 67.0 |
A5 | 45 | 125 | 120.0 | 61.5 | 204.3 | 102.3 | |
A6 | 50 | 150 | 112.0 | 50.7 | 133.1 | 31.8 | |
A7 | - | - | 118.6 | 59.6 | 192.2 | 90.3 | |
A8 | 55 | 175 | 137.0 | 84.4 | 228.5 | 126.2 | |
A9 | 30 | 50 | 110.3 | 48.5 | 179.0 | 77.2 | |
A9-1 | 35 | 75 | 130.2 | 75.2 | 207.8 | 105.7 |
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Li, W.; Qiu, J.; Wang, Y.; Zheng, X.; Zhang, K. Test and Analysis of Concrete Beams Reinforced by Polyurethane Concrete–Prestressed Steel Wires (PUC–PSWs). Buildings 2024, 14, 2746. https://doi.org/10.3390/buildings14092746
Li W, Qiu J, Wang Y, Zheng X, Zhang K. Test and Analysis of Concrete Beams Reinforced by Polyurethane Concrete–Prestressed Steel Wires (PUC–PSWs). Buildings. 2024; 14(9):2746. https://doi.org/10.3390/buildings14092746
Chicago/Turabian StyleLi, Wei, Jiaqi Qiu, Yi Wang, Xilong Zheng, and Kexin Zhang. 2024. "Test and Analysis of Concrete Beams Reinforced by Polyurethane Concrete–Prestressed Steel Wires (PUC–PSWs)" Buildings 14, no. 9: 2746. https://doi.org/10.3390/buildings14092746