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Biaxial behaviour of plain concrete subjected to dynamic compression with constant lateral stress

Auteur(s):



Médium: article de revue
Langue(s): anglais
Publié dans: Structural Concrete, , n. 2, v. 15
Page(s): 202-209
DOI: 10.1002/suco.201300057
Abstrait:

This study investigates the dynamic biaxial behaviour of concrete by testing more than 60 cubic specimens on a custom-designed, servo-hydraulic-controlled machine. Each specimen was axially loaded in compression at a constant strain rate of 10-5, 10-4, 10-3 or 10-2 s-1 while two opposite side faces were subjected to a constant confining pressure and the other two side faces were free. The confining pressure applied to each specimen was 0, 30.5, 61.0 or 91.5 % of its uniaxial compressive strength. Test results indicate that the biaxial strength of concrete increases with strain rate at a reduced slope as confining pressure increases. The failure mode of the concrete specimens was basically unaffected by the strain rate. An empirical relation for the ultimate strength of concrete in a biaxial stress state was developed taking into account the effects of both confinement and strain rate.

Mots-clé:
béton
Disponible chez: Voir chez l'éditeur
Structurae ne peut pas vous offrir cette publication en texte intégral pour l'instant. Le texte intégral est accessible chez l'éditeur. DOI: 10.1002/suco.201300057.
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  • Reference-ID
    10070102
  • Publié(e) le:
    11.06.2014
  • Modifié(e) le:
    13.08.2014
 
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