Materials and Structures

, Volume 19, Issue 2, pp 105–110 | Cite as

Testing techniques to determine the deformation properties of concrete at elevated temperatures

  • P. Schwesinger
Article
  • 43 Downloads

Abstract

This report describes the development and construction of a universal testing equipment used to determine the uniaxial deformation properties of concrete within the temperature range: +20≤T≤+140°C. Some of the results taken from other sources of the literature have proved to contain systematic testing errors, resulting from the testing techniques used; some partly unconventional solutions had to be devised in order to eliminate these errors, regarding, in particular, the length measurement system, the limitation of the measuring length to half the length of the test specimen, and the sealing.

The testing techniques described have been tried for several operating years. The results of further investigation, especially of the current programme testing above all the basic creep of concrete, should all contribute to the objectivation of the presently existing knowledge.

Keywords

Test Specimen Thermal Strain Measuring Mark Metal Casing Basic Creep 

Résumé

Cet article décrit la mise au point et la construction d’un équipement d’essai universel utilisé pour déterminer les caractéristiques de déformation uniaxiale du béton dans une gamme de température de +20≤T≤+140°C. Certains des résultats fournis par d’autres sources bibliographiques révèlent des erreurs systématiques d’essai dues aux techniques utilisées et, afin de les éliminer, on a eu recours à des solutions en partie non conventionnelles. Ceci concerne en particulier le système de mesure des longueurs, la limitation de la longueur de mesure à la moitié de la longueur de l’éprouvette d’essai et le confinement.

Les techniques d’essai décrites ont été mises à l’épreuve par plusieurs années d’opération. Les résultats des études ultérieures et spécialement du programme d’essai en cours, surtout pour le fluage du béton, devrait contribuer à donner une forme plus objective à nos connaissances actuelles.

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Copyright information

© Bordas-Gauthier-Villars 1986

Authors and Affiliations

  • P. Schwesinger
    • 1
  1. 1.Dozent Dr. Ing., Hochschule für Architektur und BauwesenWeimarDR

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