Durability of reinforced concrete structures: design formats
Title: Durability of reinforced concrete structures: design formats
Author(s): Ch. Gehlen, S. von Greve-Dierfeld
Paper category : conference
Book title: 2nd International Symposium on Service Life Design for Infrastructures
Editor(s): K. van Breugel, Guang Ye, Yong Yuan
Publisher: RILEM Publications SARL
Publication year: 2010
Pages: 351 - 358
Total Pages: 8
Nb references: 14
Abstract: Corrosion of steel reinforcement represents the major cause affecting durability of reinforced concrete structures. To assure durability, standards attempt to provide long-term performance by simple deemed-to-satisfy rules for approximate environmental classification.
Those rules are based on experience and empirical values (design format C1). These rules are not able to give an explicit relationship between performance and service life for an individual structural element. Therefore, the reliability of structures designed in this manner covers a large range. To enable performance-based design, models have to be used which describe the time-dependent deterioration processes physically or chemically with sufficient accuracy and with statistically quantified parameters. By comparing the model results with the resistance parameters, the required performance / reliability of the structure can be specified precisely (full probabilistic design format (design format A)). Full probabilistic service life design requires special software and is therefore only accessible for a small number of design engineers. Thus the aim of this research was to develop a design format (design format B) for durability of reinforced concrete structures which guarantees the required reliability by using partial safety factors (Code-Calibration). Derived from code calibration, quantified rules (design format C2) have been found and compared with German standards.
Online publication: 2011-04-20
Publication type : full_text
Public price (Euros): 0.00