TY - JOUR
ID - 4700
TI - Concrete beam life model based on shear strength under different states of chloride ion penetration
JO - Amirkabir Journal of Civil Engineering
JA - CEEJ
LA - en
SN - 2588-297X
AU - Hosseini, Seyed Abbas
AU - Bagheri, Mansour
AD - Faculty of Technology and Mining, Yasouj University, Yasouj
AD - Department of Civil Engineering, Birjand University of Technology
Y1 - 2022
PY - 2022
VL - 54
IS - 8
SP - 9
EP - 9
KW - Life model
KW - Shear failure
KW - chloride ingress
KW - concrete beam
KW - reinforcement corrosion
DO - 10.22060/ceej.2022.19296.7133
N2 - Concrete structures undergo a reduction in strength and ultimately premature deterioration during their life due to environmental factors. Corrosion of reinforcement is known as one of the most important factors in reducing the performance of concrete structures. Assessing the current condition as well as predicting the remaining useful life of structures is very important for providing maintenance plans. In this research, considering the limit-state function of the shear strength of reinforced concrete beams, the life model is calculated under different scenarios of chloride ion penetration. Reduction of the cross-section of longitudinal and transverse rebars, reduction of the cross-section of the concrete beam, and reduction of mechanical properties of concrete and rebar, which are known as side effects of rebar corrosion, have been considered in evaluating the life model. Stochastic properties of effective parameters in shear strength, as well as chloride ions, are also considered for the probabilistic evaluation of the life model. The Monte Carlo sampling method was used to generate the input values of the models. The results show that considering the effect of concrete scaling causes a large difference in the predicted values for shear strength of concrete beams so that in the critical case, considering the effects of concrete scaling reduces the shear strength by 20% and a more realistic estimate of the remaining life of the structure will be obtained.
UR - https://ceej.aut.ac.ir/article_4700.html
L1 - https://ceej.aut.ac.ir/article_4700_5663b3f9c15f846c855ebb5af0f7574e.pdf
ER -