Corrosion-induced reduction in compressive strength of self-compacting concretes containing mineral admixtures

Time-dependent Seismic Performance Assessment of Corroded Reinforced Concrete Frames

“…In the past years, research on corrosion in RC Structures and its effects on nonlinear behavior and seismic performance of structures have been made. Shayanfar et al [5], Berto et al [6] and Ouglova et al [7] investigate the corrosion effects of the bond between concrete and steel, Liu and Weyers [8], Li et al [9] and Ghanooni-Bagha et al [10] have investigated cracking and reduction of the concrete strenght due to corrosion. Also, Ghanooni-Bagha et al [11,12] have investigated the nonlinear behavior of short buildings and a steel structure by using Pushover analysis.…”

The effect of materials on the reliability of reinforced concrete beams in normal and intense corrosions

“…As a result, corr i should not be employed directly to evaluate the crosssectional corroded area. According to study conducted by Gonzaleset al [16], the maximum pit depth is roughly 4-8 times bigger than correspondent value for general one. For example, results for rebars with length of 125 mm and diameter of 8 mm are in accordance with results in Tuutti1982 [37] in which "R" for rebars with length of 150 -300 mm and diameter bounded below by 5 mm and above by 10 mm is reported between 4-10.…”

“…According to Stewart 2004 [34], R parameter varies from 4 to 8with assumption for rebar with 8 mm diameter and 125 mm length (between of 5% to 95% in Gumbel distribution).Then, mean value and C.O.V are 5.65 and 0.22, respectively, which is related to μ 0 =5.08 and α 0 =1.02. In order to compute Gumbel distribution parameters for other rebars with different diameter, ensuing equation is suggested by Gonzales et al [16].…”

“…Recent investigations on structures located in coastal areas with hot weather, indicates that sizable number of these structures are at stake of either sulfates or corrosive substances attack [16]. Today, most of impairments during serviceability of concrete structures are concerned to steel corrosion especially in marine structures and concrete bridges [1].…”

“…Pitting corrosion often does not cause disruption of the concrete cover and produces little rust staining on the concrete surface and so it may be difficult to be discovered during inspection [18][19]. Despite that a numerous researches have been done about time dependent reliability of these deteriorating structures, most of them are based on uniform corrosion assumption [12,[15][16].…”