Temperature Control Technology for Construction of Jinsha River Bridge

Table 6

Analysis of measured results of cap temperature.

Serial number	Temperature control item	Control standard	Measured value of first pouring (°C)	Measured value of second pouring (°C)
1	Temperature of pouring concrete	≤26°C	25∼30	24∼28.5
2	Maximum temperature of internal concrete	≤65°C	64.5	61.6
3	Temperature difference between the inner surface of concrete pouring body (including equivalent temperature of concrete shrinkage)	≤28°C	26.6	24.6
4	The rate of cooling of inside concrete	≤2.0°C/d	2.1	1.98
5	Temperature difference between surface of concrete and atmosphere	≤20°C	16.1	17.1
6	Temperature difference between inlet and outlet of cooling water	≤10°C	—	9.8
7	The temperature difference between the cooling water and the inside concrete when the water is first supplied or resupplied after interruption	≤25°C	24.8	—
8	Temperature difference between curing water and concrete surface	≤15°C	True	True