Theoretical and experimental determination of the crack width in reinforced concrete at very low temperatures

Abstract:

The compressive strength, the tensile splitting strength, the stress strain relationship and the thermal deformation of concrete are determined experimentally as a function of temperature. Theoretical formulae are derived based on the classical bond stress-slip theory to pbkp_redict crack width and spacing in a reinforced tension member at very low temperatures. This model is based on the local bond stress-slip relationship, which is determined experimentally as a function of temperature and curing conditions. It has been proven that realistic crack widths can be calculated using tension member model. Furthermore a model is derived to pbkp_redict the ultimate bond stress in case splitting failure occurred as a function of concrete cover and temperature. The lowest bond strength relative to the actual splitting strength is pbkp_redicted at -40 and -80°C.

Año de publicación:

1990

Keywords:

Fuente:

scopus