The report on this theme presented by K. Gerstle during the workshop is discussed principally from the viewpoints of continuum mechanics and micromechanics. Attention first centers on universal behavior, in which the effects of confinement on transverse reinforcement in normal and high-strength concretes are compared and the questions of ductility and failure strain are analyzed. This is followed by discussion of triaxial behavior, centering on differences in inelastic dilatancy, volume compaction and pressure effect on stiffness and ductility between normal and high-strength concretes. Tensile cracking is examined from the viewpoint of fracture mechanics of crack bands in heterogeneous materials and strain-localization instability. The differences between creep properties of high strength concrete are considered. Finally, attention is called to some particular aspects of moisture transfer, shrinkage, drying creep and temperature effect.
|Original language||English (US)|
|Number of pages||14|
|Journal||Proceedings, Annual Symposium - Society of Flight Test Engineers|
|State||Published - Jan 1 1979|
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