Next Article in Journal
Analysis of the Behavior of FRCM Confined Clay Brick Masonry Columns
Previous Article in Journal
Mineralogical and Geochemical Characterization of Asbestiform Todorokite, Birnessite, and Ranciéite, and Their host Mn-Rich Deposits from Serra D’Aiello (Southern Italy)
Open AccessArticle

Modeling the Behavior of CFRP Strengthened Concrete Beams and Columns at Different Temperatures

1
Department of Civil and Environmental Engineering, Wayne State University, Detroit, MI 48202, USA
2
College of Civil Engineering, Fuzhou University, Fuzhou 350108, China
*
Authors to whom correspondence should be addressed.
Fibers 2020, 8(2), 10; https://doi.org/10.3390/fib8020010
Received: 3 June 2019 / Revised: 21 January 2020 / Accepted: 23 January 2020 / Published: 10 February 2020
The bonding of thin fiber-reinforced plastics (FRP) composites on the surface of concrete members has emerged as an effective method to increase both the strength and stiffness of concrete members. Although a large volume of experimental and numerical research has performed on existing concrete structures to increase their load carrying capacity, there appears to be less work reported on simulating the influence of temperature on the behavior of concrete structures. This study intends to examine the effects of changing temperature on the mechanical properties of FRP composites as well as deteriorated composites on the structural performance of FRP bonded concrete structures. The overall approach consists of computations using finite element models to simulate the structural behavior of FRP bonded beams and columns. Three-dimensional-extended finite element modeling X-FEM using ABAQUS-CAE v.6.13 program was performed to explore the influence of temperature of (25 °C, 100 °C and 180 °C) on failure loads of FRP strengthened beams and columns with adhesive material. Additionally, the cohesive traction–separation damage model was use to model the delamination of FRP from the concrete. The flexural strength, mid-span deflection, crack patterns, failure loads, and mode of failure for the tested models were compared with the previous experimental study. The results show that a FEM results were in good agreement with experimental results. The flexural strength decreases with temperature rise for FRP strengthened concrete beams. The high temperature 180 °C has an adverse influence on the compressive strength of the specimens. The way of FRP rupture in the simulation was similar to the mode that was observed during the experimental tests.
Keywords: abaqus; bond strength; concrete; crack propagation; extended finite element method (X-FEM); finite element analysis; FRP; room temperature; 100 °C and 180 °C; strengthening abaqus; bond strength; concrete; crack propagation; extended finite element method (X-FEM); finite element analysis; FRP; room temperature; 100 °C and 180 °C; strengthening
MDPI and ACS Style

Gawil, B.; Wu, H.-C.; Elarbi, A. Modeling the Behavior of CFRP Strengthened Concrete Beams and Columns at Different Temperatures. Fibers 2020, 8, 10.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop