This paper presents the results of using distributed Brillouin fibre sensors to detect crack formation in a simply supported reinforced concrete beam subjected four-point loading. A multiple-peak fitting method was used enhance spatial and strain resolutions measurements. By doing this, profile along determined with 5 cm read-out resolution comparison 15 fibres. The location cracks identified by locating positions where suddenly changes, searching for maximum compressive or tensile peaks...

Corrosion of reinforcing steel is a major cause deterioration reinforced concrete structures. Two primary causes leading to corrosion are, respectively, carbonation and chloride contamination the cover. Estimating time initiation through modeling enables qualitative quantitative assessment influence several variables on mechanism involved. However, many these are subject stochastic uncertainty, which can be represented either frequentist or Bayesian probability. This paper proposes...

Reinforced concrete (RC) structures deteriorate and as a result crack due to extreme loading (or) environmental conditions. Damage accumulation such adversely affects the structure’s durability properties, impairing its service life. The intensity of cracking in an RC structure is usually regarded key criterion toward damage assessment repair intervention. This paper presents results experimental program which strains small-scale slab sustaining in-service loads were monitored by traditional...

Abstract Corrosion of reinforcing steel in reinforced concrete (RC) infrastructure is one the most detrimental deterioration mechanisms, affecting both safety and serviceability. In present study, a comprehensive analysis methodology corrosion damage adopted. The effects corrosion‐induced degradation material properties on ultimate capacity an existing aging RC bridge pier under concentric loading are investigated. A three‐dimensional nonlinear finite element using commercially available...

Abstract As aging infrastructures raise public concerns, evaluating their performance is crucial for maintaining structural integrity, especially corroding prestressed concrete members. These structures may experience substantial tendon cross‐sectional area loss before any visible deterioration becomes detectable. While various non‐destructive techniques (NDT) have proven effective in labs, correlating corrosion‐induced damage field members remains a challenge. Establishing these...

A simplified nonlinear finite element analysis (NLFEA) based on enhanced inspection, material testing, and sectional is introduced as part of a semi-quantitative assessment approach aged beam-columns. The focus the evaluation structural performance residual capacities slab-on-girder bridge columns subjected to combined external loads reinforcement corrosion. NLFEA takes into account different levels geometrical, material, bond damage due At each load step process, establishes instantaneous...

In conventional design of shear-dominated reinforced concrete elements shear resistance is assumed to comprise reinforcement and contributions. Because the code assumes these contributions be uncoupled independent load history, estimated nominal strength insensitive number intensity imposed cycles. However, in accordance with recent experimental evidence, contribution degrades increasing ductility demand, thereby rendering conservative for low levels deformation, increasingly unconservative...

Freezing and thawing cycles (FTC) on RC columns are a significant problem for vulnerable infrastructure exposed to extreme climate conditions. This is exacerbated by the presence of deicing agents that lead reinforcement corrosion overall concrete deterioration. Current research has mainly focused studying mechanical properties when cyclic conditions freezing thawing. Few studies have analyzed FTC's influence or dual action FTC steel structural performance RC. paper surveys available...

Abstract Corrosion of reinforcing steel in reinforced concrete (RC) infrastructure is one the most concerning durability problems affecting its serviceability and ultimate capacity North America. The rise greenhouse emissions recent decades use de‐icing salts during winter increase potential risk corrosion. Furthermore, global warming could lead to higher freeze–thaw cycles (FTC) frequency cold regions. combined effects corrosion frost damage tend affect aging RC infrastructure's structural...

Various numerical models have been developed to appraise alkali-silica reaction (ASR) induced expansion and predict its potential generate further damage. A previous work proposed a finite element approach that does not oversimplify nor overcomplicate the analysis, while still being capable of representing anisotropic macroscopic consequences. Slender structures already successfully simulated using this approach, although it has never applied assess massive structures. This paper presents...

Edge metal covers the majority of commercial roofs to maintain waterproofing. It acts as first line defense against wind effects on roofs. First, this article summarizes in situ measurement site (the Canada Post building located Vancouver, Canada) and compares measured pressures with existing standards. This study aimed develop appropriate design pressure coefficients for roof edges, incorporation National Building Code (NBCC). During process, following observations were made: (a) Comparison...

Abstract Bond is an essential property that guarantees the composite action in prestressed concrete (PC) members. This bond may be degraded due to different reasons, corrosion‐induced damage being one of most frequent ones. The transfer length key indicator describes properties between prestressing steel and concrete. analysis design PC members with wires require a realistic assessment length. paper presents analytical study influence governing geometrical mechanical variables on behavior...

A reliable assessment of the performance reinforced concrete structures affected by reinforcement corrosion requires a through understanding both material deterioration and its impact on structural behaviour in order to evaluate safety serviceability, addition estimating remaining life.This paper presents an approach for service life prediction exposed chloride environments that combines finite element modeling transport reliability-based analytical model onset damage accumulation.Service is...

The Adhesive-Applied Roofing System (AARS) is a new generation of built-up roofs gaining popularity in North American low-slope application. AARS uses no fasteners, and all components (e.g., steel deck, vapor barrier, insulation board, cover membrane) are integrated by application adhesives. Although has been use, existing standards address only mechanically attached or bonded roof assemblies. To quantify the wind-uplift performance AARS, an industry–university–government collaborative...