In order to prevent the pouring cracking of mass concrete in the hot and humid marine environment with high salt,taking the first cross-sea high-speed railway cable-stayed bridge as the research object,the mix design of concrete is tested,and a calculation model is established to study the development law of temperature control of mass concrete。The results show that when the content of P.O42.5 cement decreases from 310 kg to 280 kg and fly ash from 125 kg to 142 kg,the compressive strength decreases slightly,and the adiabatic temperature rise ...