Extrapolation of Test Data in Time, Size and Risk: A Challenge for Concrete Design Codes

Zdeněk P. Bažant*, A. Abdullah Dönmez

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Citations (Scopus)

Abstract

It is no secret that the lifetimes of concrete structures have been inadequate, and that structural failures are far too common, especially in the case of large structures of novel designs. This problem has two aspects: 1) randomness of loads such as those from traffic, environment and random vibrations, and 2) the uncertainty in material properties, role of corrosive agents, and failure mechanics. Significant progress has been achieved in the first, but less in the second, which is a problem of extrapolation. The second is just as important, yet has been mostly neglected by structural safety specialists. Only the second aspect is discussed in this lecture, and only in qualitative, non-mathematical, terms. A broad vision of the extrapolation problem is offered. Lapses of quality control are a different problem, not discussed here.

Original languageEnglish
Title of host publicationIABSE Symposium Prague, 2022
Subtitle of host publicationChallenges for Existing and Oncoming Structures - Report
PublisherInternational Association for Bridge and Structural Engineering (IABSE)
Pages54-66
Number of pages13
ISBN (Electronic)9783857481833
DOIs
Publication statusPublished - 2022
EventIABSE Symposium Prague 2022: Challenges for Existing and Oncoming Structures - Prague, Czech Republic
Duration: 25 May 202227 May 2022

Publication series

NameIABSE Symposium Prague, 2022: Challenges for Existing and Oncoming Structures - Report

Conference

ConferenceIABSE Symposium Prague 2022: Challenges for Existing and Oncoming Structures
Country/TerritoryCzech Republic
CityPrague
Period25/05/2227/05/22

Bibliographical note

Publisher Copyright:
© 2022 IABSE Symposium Prague, 2022: Challenges for Existing and Oncoming Structures - Report. All rights reserved.

Keywords

  • Structural lifetime
  • concrete, durability
  • creep
  • extrapolation
  • fracture, size effect
  • shrinkage

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