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

Ronaldo Medeiros-Junior (), Maryangela Lima () and Marcelo Medeiros ()

Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, 2015, vol. 17, issue 5, 1103-1119

Abstract: Chloride is one of the main factors responsible for damages related to the corrosion of the concrete reinforcement in marine environments. It is known that this mechanism of degradation is directly related to environmental variables. Within this context, it can be inserted the global climate change. This paper deals with the effects of temperature and relative humidity changes on the service life of concrete structures affected by chloride attack. This way, three situations of environmental aggressiveness were simulated: past, current, and future. Then, models for predicting the chlorides penetration were analyzed to the three selected situations. So, a practical methodology is presented, and the results are consistent with the literature data. Among the results, it can be noted that changes in temperature and relative humidity identified in a period of 100 years were responsible for a reduction from 7.8 to 10.2 years of service life. Most standards provide a design service life of 50 years for reinforced concrete structures. Copyright Springer Science+Business Media Dordrecht 2015

Keywords: Chloride; Concrete structures; Temperature; Relative humidity; Service life; Environment (search for similar items in EconPapers)
Date: 2015
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DOI: 10.1007/s10668-014-9592-z

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