Open Access
Ashok Kumar Suluguru,
Brunda Ungarala,
B. Vamsi Krishna,
- Associate Professor Department of Civil Engineering, Malla Reddy Engineering College Telangana India
- Student Department of Civil Engineering, Malla Reddy Engineering College Telangana India
- Associate Professor Department of Civil Engineering, Malla Reddy Engineering College Telangana India
Abstract
Globally, maintaining and repairing aging reinforced concrete structures poses a significant challenge for the construction industry. Numerous structures built before modern earthquake-resistant design codes lack adequate seismic resilience. Additionally, evolving service requirements often necessitate strengthening existing structures to handle increased loads. While past research explored the effectiveness of various Fiber Reinforced Polymer (FRP) wrappings under specific conditions, limited studies have comprehensively compared the performance of Carbon Fiber Reinforced Polymer (CFRP) compared to other options across diverse loading scenarios and structural geometries. This experimental study investigates the efficacy of CFRP wrapping on reinforced concrete beams with varying span-to-depth (L/D) ratios. Beams with L/D ratios of 4.0, 5.5, and 7.0 were retrofitted and rehabilitated with two layers of CFRP wrapping. Subsequent testing involved subjecting the beams to service load, ultimate load under static and cyclic loading conditions. The study meticulously analyzes the impact of CFRP wrapping on load-carrying capacity, stiffness improvement, and ductility behavior. The findings provide valuable insights into the potential of CFRP as a durable and performance-enhancing solution for rehabilitating reinforced concrete beams, enabling informed decision-making in real-world applications.
Keywords: CFRP strengthening, reinforced concrete beam rehabilitation, span-to-depth ratio (L/D), seismic retrofit, durability and performance enhancement
[This article belongs to Special Issue under section in Journal of Polymer and Composites(jopc)]
Browse Figures
References
- Ayrilmis, N. et al. (2024) “Utilizing waste manhole covers and fibreboard as reinforcing fillers for thermoplastic composites,” Journal of reinforced plastics and composites. doi: 10.1177/07316844241238507.
- ACI 440.2R-17 Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Concrete Members (Reaffirmed 2022)
- Ayuluri SR, Vamsi Krishna B. Settlement analysis of Piled Raft Foundation System (PRFS) in soft clay. IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE). 2017;14(2):62-8.
- Bahoria, B. V. et al.(2024) “Verification of the mechanical behavior of concrete with partial replacement of the fiber resulting from tire retreading,” Materials today: proceedings. doi: 10.1016/j.matpr.2024.04.067.
- Hussain SM, Krishna BV, Kumar VR. Application and analysis of last planner system in the construction industry. Impact Journal. 2014:33-44.
- Gandhi, S. et al.(2024) “Analysis of potential incorporation of waste into asphalt pavements,” Materials today: proceedings. doi: 10.1016/j.matpr.2024.05.097.
- Krishna BV, Rao DM. A comparative and experimental study on the mechanical properties of various steel and glass fiber reinforced high strength concrete. IRJET. 2015;2:129-33.
- Krishna BV, Reddy ER. Applications of green materials for the preparation of eco-friendly bricks and pavers. International Journal of Engineering & Technology. 2018;7(3.29):75-9.
- Kumar RA, Krishna BV. Design of Pre-Stressed Concrete T-Beams. International Journal of Scientific Engineering and Research (IJSER). 2014 Aug;2(8).
- Kumar VV, Krishna B. Seismic Analysis Of Multistoreyed Buildings With And Without Floating Columns. Journal of Engineering Services.;10(11).
- Kumar RA, Krishna BV. Design of Pre-Stressed Concrete T-Beams. International Journal of Scientific Engineering and Research (IJSER). 2014 Aug;2(8).
- Krishna BV, Hussain SA, Kumar VR. Ceraplast and Ceraproof Admixtures Behaviour on High Strength Concrete. International Journal of Engineering Research. 2014 May;3(5).
- Krishna BV, Kumar AP, Reddy ER. Shear Wall Analysis And Design Optimization In Case Of High Rise Buildings Using By Etabs. Solid State Technology. 2020 Nov 1;63(2s).
- Krishna BV, Kumar PS, Chandana K, Bhoomesh S, Gopal PV. Comparative Analysis & Design of RCC & Steel Preheater Tower Structure by Using STAAD. Pro. InIOP Conference Series: Earth and Environmental Science 2023 (Vol. 1130, No. 1, p. 012025). IOP Publishing.
- Krishna BV, Reddy MV, Naresh V, Tanuja DV, Bharat TS. Fragility Comparison for Soft Storey Infill Reduced Structures by Incremental Dynamic Analysis. InIOP Conference Series: Earth and Environmental Science 2023 (Vol. 1130, No. 1, p. 012029). IOP Publishing.
- Naga Chaitanya C, Vamsi Krishna B. An experimental study of flexural strength of reinforced concrete beam due to corrosion. IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) e-ISSN. 2014:2278-1684.
- Palanisamy, S. et al.(2024) “Fostering sustainability: The environmental advantages of natural fiber composite materials – a mini review,” Environmental Research and Technology, 7(2), pp. 256–269. doi: 10.35208/ert.1397380.
- Reddy LV, Krishna B. Influence of Na2CO3, NaHCO3 and Organic Substances (Algae) in Water on Physical Properties of Blended Pozzolonic Portland Cement. Int. J. Eng. Res. Technol.(IJERT). 2014;3:35-41.
- Srikanth I, Krishna BV. STUDY ON THE EFFECT OF GUST LOADS ON TALL BUILDINGS. International Journal of Structural and Civil Engineering Reseach. 2014;3:92-106.
- Venkatesh B, Vamsi Krishna B. A study on the mechanical properties of light weight concrete by replacing course aggregate with (pumice) and cement with (fly ash). Int J Eng Tech Res. 2015;4(8):331-6.
Journal of Polymer and Composites
| Volume | 12 |
| Special Issue | 04 |
| Received | May 13, 2024 |
| Accepted | June 18, 2024 |
| Published | July 11, 2024 |