Seite - 1431 - in Book of Full Papers - Symposium Hydro Engineering

Fig.9 The temperature changes with age at the downstream starting point and upstream end of the optical fiber From Fig.9, it can be seen that the internal temperature of concrete increases sharply with the increase of the age in the first 2 ~ 3d when there is no effect of the cooling water. Later, under the combined effect of hydration heat and cooling water, the concrete temperature first slowly increases until the maximum temperature (controlled by 27 ℃) and then decreases with the increase of the age, and finally becomes stable. 4.3. EVOLUTION LAW OF THE THERMAL FIELD Fig.10 Evolution of the temperature field of unit 11 in 7 # section with age T/(℃) 1d（2017/7/23） 3d（2017/7/25） 5d（2017/7/27） 22d（2017/8/14） 24d（2017/8/16） 25d（2017/8/17） 1431