This paper presents a simple strength simulation system newly investigated by the authors for mass concrete structures in cold weather. The system greatly simplifies the strength simulation of mass concrete structures. The aim of the research leading to this system was to create a simple and rational method of accurately predicting and determining certain properties of concrete in actual structures without resorting to full-scale modeling or complicated numerical analysis. Experimental test on mass concrete structures in cold weather was carried out in Sapporo and analytical study by a computer was also carried out to verify system's effectiveness. The good results obtained in the experimental test and in the analytical study established efficiency in predicting the strength of mass concrete structures in cold weather.
