Abstract: The temperature control of concrete in construction period is key technology for anticracking of concrete arch dam. The coarse aggregate and fine aggregate of the concrete used in Tengzigou arch dam are all consisted of feldspar and quartz sandstone, which is not useful for heat property of concrete, and this leads the crack control by temperature control is of great difficulty. Aiming at this special situation, a series of anticracking measures by temperature control was adopted, and crack of dam body was prevented effectively.

Key words: concrete construction, temperature control, arch dam, sandstone, crack control