Short-Term Efficiency of Using Sustainable BFRP Bars in Post-Tensioning Systems for One-Way RC Slab | ||
| JES. Journal of Engineering Sciences | ||
| Article 4, Volume 51, Issue 5, September and October 2023, Pages 318-344 PDF (1.34 M) | ||
| Document Type: Research Paper | ||
| DOI: 10.21608/jesaun.2023.219637.1241 | ||
| Authors | ||
| sameh yehia* 1; Sayed Abd El-Baky2; Abdullah Haded3; Arafa M. A. Ibrahim3 | ||
| 1Civil Engineering, Faculty of Engineering, Suez University | ||
| 2Housing & Building National Research Center | ||
| 3Civil Engineering, Faculty of Engineering, South Valley University | ||
| Abstract | ||
| Basalt Fiber Reinforced Polymer (BFRP) bars are manufactured from sustainable natural materials. BFRP Young’s modulus constitutes weak performance to the serviceability limits in the structural reinforced concrete (RC) elements, but using post-tensioning systems controls the serviceability limits. Nine RC slabs were tested under a four-point bending scheme. However, the efficiency of using the BFRP post-tensioning system bars as a main reinforcement of RC slabs was evaluated in two different stress levels of 10% and 50% of the rupture strength of the bars. The near-surface mounted (NSM) external strengthening post-tensioning BFRP system by two different stress levels of 10% and 30% of the rupture strength was investigated. Additionally, the hybrid reinforcement performance of both steel and BFRP bars was studied. The relevant results showed that the post-tensioning BFRP systems significantly enhanced the ultimate load and vertical deflection of the RC slabs if the stress level was 50% and 30% for the internally reinforced and externally strengthened slabs, respectively. BFRP bars in hybrid RC slabs achieved more energy absorption. At the same reinforcement area, the internal bonded BFRP bars can achieve a higher ultimate load than the unbonded external BFRP bars by 11%. Furthermore, the increment rate in prestressing losses for RC slabs with higher prestressing levels of BFRP bars was less than that of slabs with lower prestressing levels of BFRP bars. Consequently, the efficiency of the external post-tensioning system was 95.78% for the RC slab with a 50% stress level after 1000 hrs, and it’s recommended as a design guideline. | ||
| Keywords | ||
| Post-tensioning System; Basalt FRP; Hybrid Reinforcement; R.C. Slab Strengthening; Near Surface Mounted | ||
| References | ||
|
[1] P. Maximus, D. Ted, and S. Juan, “Long-Term Behaviour of Prestressed Basalt Fibre Reinforced Polymer Bars”, The 2nd International Conference on Rehabilitation and Maintenance in Civil Engineering, Procedia Engineering 54 (2013), 261 – 269.
[2] B. Pouya, P. Anil, “Creep Rupture Performance of Basalt Fiber-Reinforced Polymer Bars”, J. Aerospace Engineering 28(2013):04014074.
[3] P. Ana, D. Ted, P. Diana, and L. Mukesh, (2022), “Short- and Long-Term Prestress Losses in Basalt FRP Prestressed Concrete Beams under Sustained Loading”, J. of Composites for Construction, 26 (2022), https://doi.org/10.1061/(ASCE)CC.1943-5614.0001259.
[4] I. Marianne, R. T. Eythor, A. Kamal, “A Mechanical and Environmental Assessment and Comparison of Basalt Fibre Reinforced Polymer (BFRP) Rebar and Steel Rebar in Concrete Beams”, Energy Procedia, 111(2017), 31-40
[5] X. Wang, J. Shi, Z. Wu, Z. Zhu, “Creep strain control by pretension for basalt fiber-reinforced polymer tendon in civil applications” 89(2016), 1270–1277.
[6] J. Shi, X. Wang, H. Huang, Z. Wu, “Relaxation behavior of prestressing basalt fiber-reinforced polymer tendons considering anchorage slippage”, Journal of Composite Materials, 51(2016), 1275–1284, https://doi.org/10.1177/0021998316673893.
[7] A. Gunnarsson (2013), “Bearing capacity, relaxation and finite element simulation for prestressed concrete beams reinforced with BFRP tendons”. Master Thesis, Reykjavik University, Iceland.
[8] G. Tao, P. Zhuge, D. Lin, T. Zeng “Study on short-term prestress loss of bridge reinforced with large diameter carbon fiber bars”, International Conference on Mechanics and Civil, Hydraulic Engineering, IOP Conf. Series: Earth and Environmental Science 820 (2021) 012001, IOP Publishing.
[9] A. Kovalovs, P. Akishin, A. Chate, “Detection Prestress Loss in Prestressed Concrete Slab using Modal Analysis”, IOP Conf. Ser.: Mater. Sci. Eng (2019). 471 102015.
[10] G. Ghanem, S. Abd El-Bakey, T. Ali, and S. Yehia, “Behavior of RC Beams Retrofitted/Strengthened with External Post-Tension System”, International Journal of Civil, Mechanical and Energy Science, 2(2016), 36-43.
[11] Danying Gao, Dong Fang, Peibo You, Gang Chen, Jiyu Tang, (2020), “Flexural behavior of reinforced concrete one-way slabs strengthened via external post-tensioned FRP tendons”, Engineering Structures, 216 (2020) 110718, https://doi.org/10.1016/j.engstruct.2020.110718.
[12] A.V. Oskouei, S.M. Taleie, “Experimental Investigation on Relaxation of Fiber reinforced Polymer Composites”, Journal of Reinforced Plastics and Composites, 29 (2010), 2705-2718.
[13] M. Przygocka, R. Kotynia, “Pre-Stress Losses in FRP Pre-Stresses Reinforced Concrete – Subject Overview”, Archives of Civil Engineering, 64(2018), 257-268, DOI:10.2478/ace-2018-0073.
[14] X. Wang, J. Shi, J. Liu, L. Yang, Z. Wu, “Creep behavior of basalt fiber reinforced polymer tendons for prestressing application”, Mater. Des. 59 (2014) 558–564.
[15] ECP:203-2020, “Egyptian Code of Practice for Reinforced Concrete Construction”, Housing and Building National Research Center, (HBRC).
[16] ACI:423.10R-16, “Guide to Estimating Prestress Losses”, American Concrete Institute Committee Report.
[17] ACI:440.4R-04 (R2011), “Prestressing Concrete Structures with FRP Tendons” American Concrete Institute Committee Report.
[18] CSA-A23.3-19, “Design of concrete structures” Canadian Standards Association.
[19] CSA-S806-12 (R2021), “Design and construction of building structures with fibre-reinforced polymers”, Canadian Standards Association.
[20] ES:1109/2021, “Egyptian Standards for Natural Aggregate”, Egyptian Organization for Standards & Quality.
[21] ES:4756-1/2022, “Egyptian Standards for Cement”, Egyptian Organization for Standards & Quality.
[22] BS:8500-2019, “British Standard for Concrete Mix Design” Concrete – Complementary British Standard to BS EN 206.
[23] H. Wang, “Discussion of “Bond Behavior of Fiber Reinforced Polymer Bars under Direct Pullout Conditions” by Zenon Achillides and Kypros Pilakoutas. 8(2004), 173–181.
[24] Sikadur-31 CF, data sheet, www.sika.com.
[25] ACI:440.3R-12, “Guide Test Methods for Fiber-Reinforced Polymer (FRP) Composites for Reinforcing or Strengthening Concrete and Masonry Structures” American Concrete Institute Committee Report.
[26] ASTM: D7205/D7205M-06, “Standard Test Method for Tensile Properties of Fiber Reinforced Polymer Matrix Composite Bars”, American Society for Testing and Materials.
[27] CSA-S807:19, “Specification for fibre-reinforced polymers”, Canadian Standards Association.
[28] ES:262/2021, “Egyptian Standards for Steel Reinforcement”, Egyptian Organization for Standards & Quality.
[29] ASTM A615, A615M-04A, Standard Specification for Deformed and Plain Billet-Steel Bars for Concrete Reinforcement, American Society for Testing and Materials.
[30] BS:12390-3-2002 “Testing Hardened Concrete. Compressive Strength of Test Specimens” British Standards Institution.
[31] S. Abd El-Baky, S. Yehia, A. M. A. Ibrahim, and A. Haded “Effect of BFRP Post Tensioning System on Hybrid Reinforced Concrete Slab”, International Journal of Scientific & Engineering Research -IJSER, 12) 2021(, 432-437.
[32] ACI:440.2R-17, “Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Concrete Structures” ACI Committee 440, American Concrete Institute.
[33] ECP:208-2019, “Egyptian Code of Practice for design principles and requirements for the implementation of fiber reinforced polymers in the field of construction”, Housing and building national research center, (HBRC).
[34] C.W. Dolan, H.R. Hamilton, C.E. Bakis, and A. Nanni, (2000), “Design Recommendations for Concrete Structures Prestressed with FRP Tendons, Final Report,” Department of Civil and Architectural Engineering Report DTFH61-96-C- 00019, University of Wyoming, Laramie, Wyo., May, 113 pp.
[35] A. Pavlović, T. Donchev, D. Petkova, M. Limbachiya, “Short and long-term prestress losses in basalt FRP prestressed concrete beams under sustained loading”, Journal of Composites for Construction, 26 (2022), https://doi.org/10.1061/ (ASCE)CC.1943-5614.0001259. | ||
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