Engineering Mechanics

Proceedings Vol. 13 (2007)

ENGINEERING MECHANICS 2007

Copyright © 2007 Institute of Thermomechanics, Academy of Sciences of the Czech Republic, v.v.i., Prague

 

Tran T. N., Štemberk P., Kohoutková A.
pages 289 - +9p., full text

The uniaxial compression is a kind of loading which occurs in concrete structures frequently. In the case of solidifying concrete the uniaxial compression without any lateral constraint, which can be the surrounding concrete mass, does not exist. However, after about the initial setting time the microstructure development progressed long enough so that concrete can support itself and it does not slump under its self weight. Another possible application of uniaxial compression can be seen during erecting walls of reasonable thickness uniformly loaded by self weight. In those cases the effect of self weight on the evolution of the concrete microstructure should not be neglected. The accidental overloading, which can happen as an erroneous placement of another lift or fallen objects on the surface of hardening concrete, especially in the cases when removal of the affected concrete is no longer feasible, and its consequences have to be assessed by some reasonable modeling. In this paper, an experimental analysis is shown and a model of hardening concrete under short-time and sustained uniaxial loading is proposed.

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