Service life of concrete structures considering the effects of temperature and relative humidity on chloride transport

Impacts of Global Warming and Sea Level Rise on Service Life of Chloride-Exposed Concrete Structures

“…Medeiros-Junior et al [13] modeled the effect of climate changes (temperature and relative humidity change) on chloride diffusion coefficients. Reductions in service life for different situations were calculated.…”

“…However, the previous studies [12][13][14][15][16][17] mainly focused on the effect of global warming on chloride ingress. The effect of sea level rise on chloride ingress was not considered in the studies [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. With the rise in sea level, the distance between the coast and structure decreases, the surface chloride concentration increases, and, consequently, the rate of chloride ingress and the rate of corrosion both increase as well.…”

“…Since the rise in sea level was not taken into account, previous models [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] underestimate the rates of chloride ingress and steel corrosion and overestimate the service life of coastal concrete. To address the weak points of previous studies [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17], this study considers the effect of sea level rise on service life.…”

“…To address the weak points of previous studies [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17], this study considers the effect of sea level rise on service life. A probabilistic model is proposed for evaluating the service life of coastal concrete structures resulting from global warming and sea level rise.…”

Modeling of Chloride Distribution in Cement-Based Materials with Neumann Boundary Condition

“…e actual transport of chloride is normally defined as zC/zt � D app ∇ 2 C, where D app is the apparent diffusion coefficient generally obtained by the curve fitting of free chloride concentration with Fick's second law [12,[33][34][35]. Also, a series of models based on this basic law have been developed to take into account the multi-ionic effect [36], temperature [37,38], stress [39][40][41], electrical field [42], curing age [14,43,44], etc. And the relevant development is based on the mathematical calibration of various forms of partial differential equation with the first boundary condition called the Dirichlet condition.…”