Flexural Behavior of a New Precast Insulation Mortar Sandwich Panel
Abstract
:1. Introduction
2. Experimental Investigations
2.1. Design of Panels
2.2. Material Properties and Specifications
2.3. Casting of PIMSP
2.4. Instrument Preparation and Monitoring
2.5. Test Procedure
3. Results and Discussion
3.1. Load-Deflection Profile
3.2. Load–Strain Relationship in Steel Bars
3.3. Load–Strain Relationship on Concrete Surface
3.4. Load–Strain Relationship in Truss Leg
3.5. Cracking Patterns
4. Finite Element Analysis
4.1. Form of Finite Element Models
4.2. Typical Elements Used
4.3. One-Way PIMSP Slab Model
5. Comparison of Results
5.1. Load-Deflection Profile
5.2. Strain Distribution
5.3. Load–Strain Relationship in Steel Bars
5.4. Load–Strain Relationship in Truss Leg
6. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Name of Panel | Top Wythe d1 (mm) | Insulation Layer d2 (mm) | Bottom Wythe d3 (mm) | L × b × d (mm × mm × mm) |
---|---|---|---|---|
DHB1 | 70 | 0 | 60 | 3700 × 1200 × 130 |
DHB2 | 90 | 0 | 60 | 3700 × 1200 × 150 |
JXB1 | 70 | 20 | 60 | 3700 × 1200 × 150 |
JXB2 | 70 | 20 | 60 | 3700 × 1200 × 150 |
Materials | fcu (MPa) | ft (MPa) | Ec (GPa) |
---|---|---|---|
concrete | 48.28 | 3.71 | 29.8 |
insulation mortar | 5.8 | 0.5 | 1.0 |
Steel Materials | Diameter (mm) | Yield Stress fy (MPa) | Stress at Ultimate Strength (MPa) | Es (GPa) |
---|---|---|---|---|
Steel reinforcement | 8 | 570 | 694 | 194 |
truss chord | 10 | 531 | 690 | 214 |
truss leg | 6 | 400 | 707 | 201 |
Items | Experiment of JXB1 | FEA of JXB1 | Experiment of DHB2 | FEA of DHB2 |
---|---|---|---|---|
1st cracking load (kN) | 17.0 | 17.5 | 20.3 | 18.6 |
Increase rate of deflection curve before cracking (mm/kN) | 0.25 | 0.30 | 0.39 | 0.37 |
Increase rate of deflection curve after cracking (mm/kN) | 0.61 | 0.61 | 0.64 | 0.47 |
Location of cracking | Mid-span | Mid-span | Mid-span | Mid-span |
Yield load (kN) | 50.2 | 55.9 | 52.2 | 58.2 |
Increase rate of deflection curve after yield (mm/kN) | 6.5 | 5.8 | 7.2 | 9.5 |
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Zhang, M.; Feng, W.; Chen, K.; Li, B. Flexural Behavior of a New Precast Insulation Mortar Sandwich Panel. Appl. Sci. 2024, 14, 2071. https://doi.org/10.3390/app14052071
Zhang M, Feng W, Chen K, Li B. Flexural Behavior of a New Precast Insulation Mortar Sandwich Panel. Applied Sciences. 2024; 14(5):2071. https://doi.org/10.3390/app14052071
Chicago/Turabian StyleZhang, Mingshan, Weirong Feng, Kepeng Chen, and Benyue Li. 2024. "Flexural Behavior of a New Precast Insulation Mortar Sandwich Panel" Applied Sciences 14, no. 5: 2071. https://doi.org/10.3390/app14052071
APA StyleZhang, M., Feng, W., Chen, K., & Li, B. (2024). Flexural Behavior of a New Precast Insulation Mortar Sandwich Panel. Applied Sciences, 14(5), 2071. https://doi.org/10.3390/app14052071