A new stress estimation method considering time-dependent behavior of concrete

K. Niitani, H. Watase, K. Sakata, T. Ayano

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

It is important to know the stress of concrete acting on existing structures in order to maintain structures appropriately. However, it is difficult to know the actual stress for several reasons. The major reason is lack of the design documents. Even when design documents exist, usually, actual stress conditions are different from design conditions. The causes are internal restrictions due to creep and shrinkage, differences between design assumptions and actual behaviors of structures, and so on. In this study, the mechanisms of internal restrictions are investigated through various experiments. And a new effective stress estimation method considering time-dependent behavior of concrete is proposed. The method is based on stress release technique. It can separate strain due to internal restriction from the total released strain, and the accuracy of estimated stress has been improved. From application tests, it was confirmed that the method is useful for setting maintenance level of structures.

Original languageEnglish
Title of host publicationCreep, Shrinkage and Durability Mechanics of Concrete and Concrete Structures - Proceedings of the 8th Int. Conference on Creep, Shrinkage and Durability Mechanics of Concrete and Concrete Structures
Pages1197-1203
Number of pages7
Publication statusPublished - Dec 1 2009
Event8th International Conference on Creep, Shrinkage and Durability Mechanics of Concrete and Concrete Structures - Ise-Shima, Japan
Duration: Sep 30 2008Oct 2 2008

Publication series

NameCreep, Shrinkage and Durability Mechanics of Concrete and Concrete Structures - Proceedings of the 8th Int. Conference on Creep, Shrinkage and Durability Mechanics of Concrete and Concrete Structures
Volume2

Other

Other8th International Conference on Creep, Shrinkage and Durability Mechanics of Concrete and Concrete Structures
Country/TerritoryJapan
CityIse-Shima
Period9/30/0810/2/08

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Mechanics of Materials

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