Test methods to determine durability of concrete under combined environmental actions and mechanical load: final report of RILEM TC 246-TDC

Yan Yao, Ling Wang, Folker H. Wittmann, Nele De Belie, Erik Schlangen, Hugo Eguez Alava, Zhendi Wang, Sylvia Kessler, Christoph Gehlen, B. Binti Md Yunus, Juan Li, Weihong Li, Max J. Setzer, Feng Xing, Yin Cao

Research output: Contribution to journalArticleScientificpeer-review

24 Citations (Scopus)

Abstract

At present several methods are available to predict the durability of reinforced concrete structures. In most cases, one dominant deterioration process such as carbonation or chloride penetration is taken into consideration. Experimental results as well as observations in practice show that this is not a realistic and certainly not a conservative approach. In order to test more realistically, RILEM TC 246-TDC, founded in 2011, has developed a method to determine the durability of concrete exposed to the combined action of chloride penetration and mechanical load. In this report, a test method is presented which allows determination of realistic diffusion coefficients for chloride ions in concrete under compressive or tensile stress. Comparative test results from five different laboratories showed that the combination of mechanical and environmental loads may be much more severe than a single environmental load without mechanical loading. Modelling and probabilistic analysis also showed that the obvious synergetic effects cannot be neglected in realistic service life prediction.

Original languageEnglish
Article number123
JournalMaterials and Structures
Volume50
Issue number2
DOIs
Publication statusPublished - 1 Apr 2017

Keywords

  • Chloride ion diffusion
  • Combined actions
  • Compressive stress
  • Concrete durability
  • Service life prediction
  • Tensile stress

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