Analysis of CFRP Confined Concrete Cylinders by using ABAQUS Software
Article Sidebar
Main Article Content
Abstract
The fiber-reinforced polymer (FRP) wrapping is widely used in concrete column strengthening, as it can enhance concrete strength and ductility. This study aims to develop finite element numerical model that can capture the behavior of the short cylinder column confined with CFRP. After validating the proposed finite element models with previous experimental works, a series of parametric studies have been conducted, including, CFRP number of layers, concrete grade, confinement configuration, and size of samples are investigated in terms of stress-strain curves, ductility, and volumetric strain. The results indicate a significant improvement in concrete strength after fully CFRP wrapping. However, the partial confinement records less improvement in concrete strength but considerable ductility. By increasing the specimen’s size and maintaining the same confinement ratio, the strength enhancement was decreased. Based on this observation; it can be concluded that; by increasing the samples sizes, it should be escorted with more confining ratio than that of the small size. Moreover, it was concluded that as the number of layers increases the ductility increases whether it was full or partial confinement configuration. The CFRP confinement can control the specimen’s dilation during the axial compression test thus presenting less volumetric strain. The proposed formula by (Lam & Teng, 2003) that can predict the stress-strain response of FRP full confined concrete cylinder was compared with the corresponding values. The results indicated that; a good matching was noticed only for the samples located in the same area that was studied by (Lam & Teng, 2003).
Metrics
Article Details
This work is licensed under a Creative Commons Attribution 4.0 International License.
THIS IS AN OPEN ACCESS ARTICLE UNDER THE CC BY LICENSE http://creativecommons.org/licenses/by/4.0/
Plaudit
References
REFERENCES
Almusallam TH. Behavior of normal and high-strength concrete cylinders confined with E-glass/epoxy composite laminates. Composites Part B, 2007; B (38): 629–639.
Piekarczyk J, Piekarczyk W, Blazewicz S. Compression strength of concrete cylinders reinforced with carbon fiber laminate. Construction and Building Materials, 2011; _ (25): 2365–2369.
Spoelstra MMR, Giorgio M. FRP-confined concrete model. J Compos Constr, 1999; 3(3): 143-150.
Lam L, Teng JG. Design-oriented stress–strain model for FRP-confined concrete. Construction and Building Materials, 2003; 3(17): 471–489.
Mirmiran, Shahawy M. Behavior of concrete columns confined by fiber composites. J Struct Eng ASCE, 1997; 5(123): 83-90.
Mirmiran, Shahawy M, Samaan M, El Echary H. Effect of column parameters on FRP-confined concrete. J. Compos. Constr. ASCE, 1998; 2(4): 175-85.
Xiao Y , Wu H. Compressive behavior of concrete confined by carbon fiber composite jackets. J Mater Civ Eng ASCE, 2000;12(2): 139-46.
Campione G, Mendola LL, Monaco A, Valenz A. Behavior in compression of concrete cylinders externally wrapped with basalt fibers. Composites, 2015; _(69): 576-586.
Hany NF, Hantouche EG, Harajli MH. Axial Stress-Strain Model of CFRP-Confined Concrete under Monotonic and Cyclic Loading. J. Compos. Constr. ASCE, 2015; 19(6): 1-16.
Hany NF, Hantouche EG, Mohamed HH. Finite element modeling of FRP-confined concrete using modified concrete damaged plasticity. Engineering Structures, 2016; _ (125): 1-14.
Yu T, Teng, Wong Y, Dong S. Finite element modeling of confined concrete– I: Drucker-Prager type plasticity model. Eng Struct, 2010; 3(32): 665-679.
Rousakis T, Rakitzis T, Karabinis A. Design-oriented strength model for FRP confined concrete members. J Compos Constr, ASCE, 2012; 6(16): 615-625.
Raza, Rehman SU, Masood B, Hussain I. Finite element modelling and theoretical prediction of FRP-reinforced concrete column confined with various FRP-tubes. Structures, 2020; _ (26): 626-638.
Saberi H, Bui T, Furukawa A, Rahai A. FRP-coonfined concrete model based on damage-plasticity and phase-field approaches. Composite Structures, 2020; _ (244): 1-10.
ABAQUS, Analysis User's Manual, United States of America: SIMULIA/ABAQUC INC., 2017.
Ellobode E. Finite Element Analysis and Design of Steel -Concrete Composite Bridges, Tanta University, Egypt: Elsevier Inc., 2014.
Mander JB, Priestley MJ, Park R. Observed stress-strain behvior of confined concrete. J. Struct. Eng. (ASCE), 1988; 114(8): 1827-1849.
Hsu T, Mo YL. Unified Theory of Concrete Structures. 2010.
Zeng J, Guo Y, Li L, Chen W. Behavior and Three-Dimensional Finite Element Modeling of Circular Concrete Columns Partially Wrapped with FRP Strips. polymers, 2018; 10(253): 1-29.
ASTM, Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens. ASTM, USA, 2020.
ACI. Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Concrete Structures. Farmington Hills, USA, 2017.
Oliveira DSD, Raiz V, Carrazedo R. Experimental Study on Normal-Strength, High-Strength and Ultrahigh-Strength Concrete Confined by Carbon and Glass FRP Laminates. ASCE J. Compos. Constr, 2019; 1(23): 1-15.
Wu G, Lu Z, Wu Z. Strength and ductility of concrete cylinders confined with FRP composites. Constr. Build Mater, 2006; 3(20): 134-148.
Elsanadedy H, Al-Salloum Y, Alsayed S, Iqbal R. Experimental and numerical investigation of size effects in FRP-wrapped concrete columns. Const Build Mater, 2012; 1(29): 56-72.
Liu JA, Huiming C, Zuohu W, Xiuli D. Size effect on axial compressive failure of CFRP-wrapped square concrete columns: Tests and simulations. Composite Structures, 2020; 4(25): 1-19.
Hadi MN, Lei X. Spline-shape modification for FRP-confined concrete columns: theory and evaluation. in Proceedings of the 7th International Conference on FRP Composites in Civil Engineering, 1-6, 2014.
Rochette P, Labossiere P. Axial testing of rectangular column models confined with composites. J. Compos. Constr, 2000; 4(_): 129-136.
Aules WA, Raoof SM. Effect of shape modification on the confinement effectiveness of CFRP strengthened
square concrete compression members. Case Studies in Construction Materials, no. 15, pp. 1-14, 2021
Mirmiran, Shahawy M. Behavior of concrete columns confined by fiber composites. J Struct Eng, 1997; 5(123): 583 –590.
Chen WF. Plasticity in reinforced concrete, 1982.
ROUSAKIS T, YOU CS, LORENZIS LD, TAMUŽS V. Concrete cylinders confined by CFRP sheets subjected to cyclic axial compressive load. worldscientific, 2003; p. 5170580.