ABSTRACT

After the peak temperatures computed temperatures decrease faster than experimental ones. This could be due to incorrect estimation of heat conductivity and coefficient of heat transfer.

Computed thermal stresses for the first lift are shown in Fig.7 compared with experimental results for the first seven days before cracking with estimated tensile strength of concrete ft(t) according to Eq.(4). Fig.8 shows them for the whole period of measurement. From these figures computed stresses qualitatively agree well with experimental results at all measuring points.