Probabilistic analysis of climate change impact on chloride-induced deterioration of reinforced concrete considering Nordic climate

Nasr, Amro; Honfí, Dániel; Ivanov, Oskar Larsson

doi:10.1186/s43065-022-00053-6

Cited by 9 publications

(4 citation statements)

References 58 publications

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“…Thus, weather parameters, their extremes from climate change, trigger the highly non-linear ASR expansion in case. These findings align with previous studies demonstrating the effects of clim change on the chemo-physical behavior of concrete infrastructures [25][26][27][28].…”

Section: Long-term Asr Forecastssupporting

confidence: 92%

“…Thus, climate extremes pose potential threats and risks [24]. This intrinsic randomness from climate-change-induced extreme events can adversely affect cement-based materials, especially, impacting the chemo-physical behavior of concrete infrastructures [25][26][27][28]. Particularly, the frequent changes in weather conditions can create anomalies in the chemical kinetics of ASR gel production and subsequent expansion.…”

Section: Introductionmentioning

confidence: 99%

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Improved Alkali–Silica Reaction Forecast in Concrete Infrastructures through Stochastic Climate Change Impact Analysis

Rahman,

2023

Infrastructures

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The assessment of concrete infrastructures’ functionality during natural hazards is fundamental in evaluating their performance and emergency response. In this work, the alkali–silica reaction (ASR) in concrete is evaluated under the climate change impact. The ASR is greatly influenced by the weather parameters, such as temperature and humidity. Climate change has led the quickening of global warming and has caused extreme weather events in recent years. These events can create anomalies in weather and thus convey potential threats to the concrete infrastructures affected by the ASR. Capturing these extreme events is the key prerequisite for the precise quantification of the ASR chemophysics. This work develops a novel stochastic approach to understand the influence of stochastic temperature and humidity on ASR expansion. To assess the stochastic weather impacts on concrete, a physics-informed domain is developed by capturing the variably saturated porous medium of concrete. This is an effort to analyze ASR kinetics that integrates chemo-physical damage under extreme weather events. Results elucidate that the ASR-affected concrete would experience 83.33% more damage in 10 years than from seasonal change due to the stochastic weather impacts from climate change. This improved predictive model will guide the durable infrastructure materials design practices and enhance the resiliency of concrete infrastructures.

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Section: Long-term Asr Forecastssupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Improved Alkali–Silica Reaction Forecast in Concrete Infrastructures through Stochastic Climate Change Impact Analysis

Rahman,

2023

Infrastructures

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“…The impact of climate change has been studied recently by many researchers worldwide [2,3]. An increasing temperature due to climate change accelerates material degradation and exacerbates the bridge's structural integrity and serviceability [4,5]. The Canadian Infrastructure report card released in 2019 stated that functional and structural deficiencies are more noticeable for approximately 40% of Canadian bridges due to increasing climate change loads and not considering the temperature increase properly during the design phase [6,7].…”

Section: Literature Review 21 Potential Impacts Of Climate Change On ...mentioning

confidence: 99%

Predicting Maximum Effective Temperatures and Thermal Gradients for Steel I-Girder in Canadian Climate Regions

Nassar

Amleh

2023

Applied Sciences

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The constant fluctuation of thermal loads on steel members, especially during construction, causes non-uniform distributions of temperatures, resulting in possible constructional and structural defects leading to unfavorable thermally induced responses and potential safety risks. The Canadian Highway Bridge Design Code (CHBDC) provides one thermal gradient variation profile without accounting for the differences in the geometrical parameters of the steel members and the variations in the climate regions of Canada. Therefore, in this study, three-dimensional finite element (FE) thermal simulations were conducted to investigate the maximum effective temperatures and positive vertical thermal gradients for different Canadian climate regions. Parametric studies were performed to conduct the FE thermal analysis using the thermal model validated in ANSYS. The comprehensive study results showed that Canada could be divided into two main zones for vertical thermal gradient calculations, meaning that one stationary thermal gradient profile cannot be applicable to all climate regions of Canada, as recommended by the CHBDC. Based on the FE thermal analysis results, empirical formulas as a function of the significant parameters were proposed to predict the maximum effective temperature and thermal gradient variations of the steel I-girder. The predicted maximum effective temperature and thermal gradient variation values were found to be highly correlated with the FE values with coefficients of determination R2 of approximately 0.97 and 0.98, respectively.

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“…In fact, among the different types of degradation of RC constructions, corrosion of the steel rebar is the most usual one, considering that all the main structural elements of RC bridges are subjected to the same environmental conditions at the construction site. Moreover, the intensification of environmental pollution and the impacts of climate change have influenced the continuous evolution of corrosion phenomena, as demonstrated by several research works developed in recent years [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Climate Change Impact on Corrosion of Reinforced Concrete Bridges and Their Seismic Performance

Zucca,

Landi,

Puppio

et al. 2023

Applied Sciences

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As a consequence of climate change impact, a significant variation in terms of temperature, atmospheric humidity, and carbon dioxide concentration levels is happening. This condition leads to several negative effects on the safety and the life cycle of existing concrete structures, such as the increase in the rate of material degradation, due to corrosion phenomena. In fact, the presence of carbonation and corrosion phenomena significantly influence the load-bearing capacity of existing reinforced concrete (RC) structures, under both static and dynamic loads. Among the wide range of existing RC constructions, bridges stand out for their importance. Furthermore, as structures directly exposed to the weather effects, they are more susceptible to these phenomena. In this paper, the influence of corrosion on existing RC motorway viaducts’ seismic behavior, considering the impact of climate change, is investigated, by means of an efficient procedure based on the implementation of 3D simplified finite element models and the use of analytical relations to obtain the amount of reduction in the steel reinforcement area as a function of the age of the bridge and of the different corrosion scenarios analyzed. Several scenarios for the expected variations in CO2 concentrations, temperature, and relative humidity are evaluated, considering that most of the viaducts present in the Italian motorway network were built between the 1960s and the 1970s. The results obtained using the projection of climate change impacts are compared with those calculated considering the corrosion scenarios resulting from the DuraCrete research project, to understand if the evolution of climate change leads to worse scenarios than those previously assessed.

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Probabilistic analysis of climate change impact on chloride-induced deterioration of reinforced concrete considering Nordic climate

Cited by 9 publications

References 58 publications

Improved Alkali–Silica Reaction Forecast in Concrete Infrastructures through Stochastic Climate Change Impact Analysis

Improved Alkali–Silica Reaction Forecast in Concrete Infrastructures through Stochastic Climate Change Impact Analysis

Predicting Maximum Effective Temperatures and Thermal Gradients for Steel I-Girder in Canadian Climate Regions

Climate Change Impact on Corrosion of Reinforced Concrete Bridges and Their Seismic Performance

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