Structural reliability of existing rc beams strengthened with UHPFRC tensile layers

A methodology for reliability analysis of reinforced concrete (RC) beams strengthened with ultra high-performance fibre (UHPFRC) tensile layers is presented. The proposed includes stochastic stress-block a section, assuming perfect bond between the RC beam and UHPFRC layer. Annual before after strengthening operation conducted. Deterioration induced by chloride corrosion incorporated into via model based on Fick’s law diffusion described stochastically to account epistemic uncertainty in time initiation rate corrosion. plot determining required thickness layer upgrade level also given, considering from construction when approach easy apply routine practice.