Crack Risk Evaluation of Early Age Concrete Based on the Distributed Optical Fiber Temperature Sensing

Table 4

Temperature and thermal stress prediction cases at normal weather.

Prediction cases number	Possible temperature control measures
	Casting temperature/°C	Pipe cooling	Surface insulation
1	14	None	None
2	8	None	None
3	8	(i) Steel pipe; (ii) Vertical and horizontal spacing: 1.5 m; (iii) Outer diameter: 32 mm, thickness: 2 mm; (iv) Fluid water temperature: 8°C, discharge 72 /d	None