Akademska digitalna zbirka SLovenije - logo
E-viri
Recenzirano Odprti dostop
  • Influence of global warming...
    Bastidas-Arteaga, Emilio; Schoefs, Franck; Stewart, Mark G.; Wang, Xiaoming

    Engineering structures, 06/2013, Letnik: 51
    Journal Article

    ► We study the effects of climate change on the durability of corroding RC structures. ► Simplified climate models including climate change scenarios are presented. ► Climate change could reduce RC durability significantly. ► The time-to-failure and service life decrease by up to 31% or 15years, respectively. ► We outlined the needs for an optimal risk-based selection of adaptation strategies. Chloride ingress and carbonation cause corrosion of reinforced concrete (RC) structures affecting its operational life. Experimental evidence indicates that these deterioration processes are highly influenced by CO2 emissions and climatic conditions in the surrounding environment – i.e., temperature, humidity, etc. Since studies on global warming announce changes in climate, the impact of changing climate on RC durability should also be considered. This paper links RC deterioration mechanisms to CO2 emissions and global warming. Based on various studies on climate change, models for estimating the effect of CO2 emissions and temperature/humidity changes due to global warming are described. Furthermore, various scenarios of global warming that can be used to assess the effect of climate change in structural reliability are proposed. The proposed approach is then illustrated with a numerical example that calculates the probability of failure of a RC bridge beam for future climate scenarios. The paper then outlines some adaptation strategies, particularly focusing on the needs for risk-based selection of optimal adaptation measures.