Effect of Carbon-Fiber-Reinforced Polymer Laminate Configuration on the Behavior of Strengthened Reinforced Concrete Beams

Debonding failure modes of flexural FRP-strengthened RC beams

“…Selected experimental results for debonding failure of FRP-flexural-strengthening tests carried out by other authors are summarized in Table 11 [1,8,9,33,34]. Results are taken from test specimens with different configurations in geometry, materials and FRP layers.…”

“…The second debonding failure type is plate end debonding which starts at the ends of the plate and propagates along the beam. There has been a significant amount of research on this failure mode, which has resulted in closed-form elastic solutions for interfacial stresses [3][4][5][6], analytical design guidelines for end anchorage [7,8] and nonlinear finite element modelling [9,10]. A complete bond model has been proposed by Neubauer and Rostasy [11,31] in order to check debonding at all vulnerable locations of the strengthened beam.…”

Relationships between interfacial shear stresses and moment capacities of RC beams strengthened with various types of FRP sheets

“…Also, Maalej and Leong [13] perform experiments to show the relationship between CFRPs thickness and interfacial stress, and conclude that interfacial stress increases with the number of CFRP layers. The effect of CFRP width on the structural behavior of RC beams is investigated by Brena and Marcri [14].…”

Modeling of ultimate load for R.C. beams strengthened with Carbon FRP using artificial neural networks

“…R/C members resist bending moment using several mechanisms. Experimental investigations to predict the flexural strength of R/C members have been carried out by several researchers and several empirical formulas [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23], based on experimental results, have been developed, Some of these formulas are used in prominent design codes such as the American Concrete Institute (ACI 440 R2) [6]. These formulas are used to predict the bending moment of concrete beams strengthen by CFRP, carry two point load as shown in figure (2) and they are functions of several flexural parameters.…”

“…During the collection of the data, specimens that do not have flexural failures have been excluded from the training set. The basic parameters that control the ultimate load of beams, based on previous research works are listed in table (1) The experimental data include 85 beam results, which are taken from the tests carried out by references [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23], the data are rearranged in such a way that 17 basic parameters are listed as input values and the ultimate load is included as the corresponding output value. The data collected contain the ranges as in table 1.…”