PROPERTIES OF HOT WEATHER CONCRETE AND THERMAL CRACKING EVALUATION OF SLAB-TYPE MEMBERS BY STRESS-STRENGTH RATIO

Assuming a hot weather environment, experiments were conducted to obtain properties of concrete using various types of Portland cements with a target mixing temperature of 45°C maximum. In addition, using 3-dimensional FEM thermal stress analysis for massive slab-type members, the stress strength ratio was evaluated by setting up the analytical configuration obtained from experiments, etc., and the prediction equation for the stress strength ratio of massive concrete exceeding 35°C was examined. The feasibility of massive concrete construction assuming concrete temperatures of up to 40°C at the time of inspection will be clarified.