Figure 1
Geometry of columns and jacketing
Figure 2
Input and output load on specimens in sleeve test
Figure 3
Comparison of substrate surfaces (Chilwesa et al. [88 M. Chilwesa, F. Minelli, A. Reggia, and G. Plizzari, "Evaluating the shear bond strength between old and new concrete through a new test method," Mag. Concr. Res., vol. 69, no. 9, pp. 425–435, May 2017, http://dx.doi.org/10.1680/jmacr.16.00327.])
Figure 4
Comparison of substrate surfaces (Harris et al. [1515 D. K. Harris, M. A. C. Muñoz, A. Gheitasi, T. M. Ahlborn, and S. V. Rush, "The challenges related to interface bond characterization of ultra-high-performance concrete with implications for bridge rehabilitation practices," Adv. Civ. Eng. Mater., vol. 4, no. 2, pp. 75–101, Nov 2014, http://dx.doi.org/10.1520/ACEM20140034.])
Figure 2
Input and output load on specimens in sleeve test
Figure 3
Comparison of substrate surfaces (Chilwesa et al. [88 M. Chilwesa, F. Minelli, A. Reggia, and G. Plizzari, "Evaluating the shear bond strength between old and new concrete through a new test method," Mag. Concr. Res., vol. 69, no. 9, pp. 425–435, May 2017, http://dx.doi.org/10.1680/jmacr.16.00327.])
Figure 4
Comparison of substrate surfaces (Harris et al. [1515 D. K. Harris, M. A. C. Muñoz, A. Gheitasi, T. M. Ahlborn, and S. V. Rush, "The challenges related to interface bond characterization of ultra-high-performance concrete with implications for bridge rehabilitation practices," Adv. Civ. Eng. Mater., vol. 4, no. 2, pp. 75–101, Nov 2014, http://dx.doi.org/10.1520/ACEM20140034.])
Figure 5
Sanding surface treatment
Figure 6
Mechanical chipping surface treatment (holes with drill)
Figure 7
Epoxy adhesive surface treatment
Figure 8
Molds of the sleeve test specimens
Figure 9
Sleeve test specimens with new concrete jacket (grout)
Figure 10
Characteristics of the sleeve test specimens
Figure 11
Schematic drawing of the sleeve test specimen elements
Figure 12
Identification code of the specimens of each series
Figure 13
Series 1 – Rupture stress in the sleeve test
Figure 18
Series 6 – Rupture stress in the sleeve test
Figure 14
Series 2 – Rupture stress in the sleeve test
Figure 15
Series 3 – Rupture stress in the sleeve test
Figure 16
Series 4 – Rupture stress in the sleeve test
Figure 19
Series 1 x Series 2 – Average rupture stress in the sleeve test
Figure 20
Series 3 x Series 4 – Average rupture stress in the sleeve test
Figure 21
Series 5 x Series 6 – Average rupture stress in the sleeve test
Figure 22
Series 1 x Series 3 x Series 5 – Average rupture stress in the sleeve test
Figure 23
Series 2 x Series 4 x Series 6 – Average rupture stress in the sleeve test
Figure 19
Series 1 x Series 2 – Average rupture stress in the sleeve test
Figure 20
Series 3 x Series 4 – Average rupture stress in the sleeve test
Figure 21
Series 5 x Series 6 – Average rupture stress in the sleeve test
Figure 22
Series 1 x Series 3 x Series 5 – Average rupture stress in the sleeve test
Figure 23
Series 2 x Series 4 x Series 6 – Average rupture stress in the sleeve test
Figure 24
Methodology for calculating the coefficient of friction (µ) and adhesion (c) based on NBR 6118:2023[2020 Associação Brasileira de Normas Técnicas, Projeto de Estruturas de Concreto, ABNT NBR 6118, 2023.]
Figure 25
Longitudinal crack in a specimen with t = 4.6cm / H = 10cm
Figure 26
Longitudinal crack in a specimen with t = 4.6cm / H = 14cm
Figure 27
Longitudinal crack in a specimen with t = 2.2cm / H = 17.5cm
Figure 28
Separation of the core (old concrete) and the jacket (new concrete)
Figure 17
Series 5 – Rupture stress in the sleeve test
Figure 17
Series 5 – Rupture stress in the sleeve test
Table 1
Series 1 – Average characterization values of old (OC) and new (NC) concrete
Table 6
Series 6 – Average characterization values of old (OC) and new (NC) concrete
Table 2
Series 2 – Average characterization values of old (OC) and new (NC) concrete
Table 3
Series 3 – Average characterization values of old (OC) and new (NC) concrete
Table 4
Series 4 – Average characterization values of old (OC) and new (NC) concrete
Table 5
Series 5 – Average characterization values of old (OC) and new (NC) concrete
Table 7
Series 1 – Calculation of the coefficient of friction and adhesion
Table 12
Series 6 – Calculation of the coefficient of friction and adhesion
Table 8
Series 2 – Calculation of the coefficient of friction and adhesion
Table 9
Series 3 – Calculation of the coefficient of friction and adhesion
Table 10
Series 4 – Calculation of the coefficient of friction and adhesion
Table 11
Series 5 – Calculation of the coefficient of friction and adhesion