New Theory on Adiabatic Temperature Rise and Its Engineering Application in Longtan Project
ZHANG Zi-ming, SONG Zhi-tong, SHI Duan-xue(Hohai University, Nanjing 210098, China)
This paper presents an experimental study on the adiabatic temperature rise under different curing temperature conditions. The form of rate constant versus temperature function is adopted to describe the combined effect of ratio on adiabatic temperature rise. This study investigates the relationship between the rate constant and curing temperature. Based on adiabatic temperature rise data for concrete cured at 4.4 ℃, 23.3 ℃ and 40.0 ℃, the following conclusions are drawn:① Adiabatic temperature rise can be represented by a three parameter hyperbolic function;② The rate constant is a non-linear function of curing temperature; ③ Further study on the concrete specimens is necessary for correct calculation of temperature field and stress field of concrete structure. Consideration is also given to the non-linear heat conduction equation and its solution-solution in real-time field and equivalent time field-- for the ratio constant. This theory has been applied to the temperature stress and temperature control analysis for the RCC dam of Longtan project.