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State-of-the-art of modern concrete service life



Title: State-of-the-art of modern concrete service life
Author(s): W. Sun
Paper category : conference
Book title: International Conference on Microstructure Related Durability of Cementitious Composites
Editor(s): W. Sun, K. van Breugel, C. Miao, G. Ye and H. Chen
Print-ISBN: 978-2-35158-065-3
e-ISBN: 978-2-35158-084-4
Publisher: RILEM Publications
Publication year: 2008
Pages: 285 - 297
Total Pages: 13
Nb references: 24
Language: English


Abstract: In this paper, the failure mechanisms of domestic and international important infrastructures and the reason lost the service lives are comprehensively analyzed. In order to ensure the accuracy and reliability of durability evaluation and service life prediction of different concrete projects, they must be conducted according to the complex service conditions. After reviewing the current study on the durability and service life of concrete, two points must be put attention as follows. The physical and chemical interactions induced by the coupled environmental factors are crucial for the concrete damage degradation, which should be firstly made clear for the concrete structures in practice. Secondly, the failure process of damaged concrete at different service time and research scales is accelerated by the coupled effects of environment and external load. It is emphasized that the relation between the time-varying characteristics of concrete microstructure and the mechanical behavior degradation of macro concrete structure must be comprehensively revealed. Finally, the modern concrete structure should be scientifically designed by the combinational method of load capacity design and durability design. The investigation on the equivalent conversion from the environmental chemistry effect to the mechanical action is the primary step for advancing the renovation of new concrete design system.


Online publication: 2009-06-09
Publication type : full_text
Public price (Euros): 0.00