ABSTRACT
The corresponding change of the zero-stress temperature can be calculated from the cracking frame test data (development of temperature and stress) using the model developed by Mangold (1994) . An example for the development of concrete zero-stress temperature and thermal stress at the surface and in the centre of a wall is shown in fig. 2. Considering the whole cross-section, a symmetrical distribution of thermal stresses can be subdivided into the following types. - The longitudinal restraint stresses, which arise when the constant
deformation of the concrete member, is restrained, see fig. 2. The longitudinal restraint stress has a constant value over the crosssection of the member.
