ABSTRACT

With the start of hardening, the thermal expansion of the concrete as it heats up leads to slowly increasing compressive stresses in the restrained component due to the increasing elastic modulus of the young concrete (see Fig. 2). Compared to the purely elastic behaviour the

behaviour during the cooling phase of concrete with the silicious type of aggregates used in these tests, Thielen and Hintzen ( 1 9 9 4 ) .