heat degree
5.It is heat-resistant, durable, has high degree of adapting capacity, sound-proof, anti-frosting and able to reduce the radiation of the sun.
6.(1) The character of hydration and heat generation of concrete is studied in two aspects of theory and test, and new calculation models of adiabatic temperature rise and thermal conduction are established which base on the degree of hydration, the character of surface heat exchange of concrete is also tested. Then the nonlinear heat conduction equation basing on the degree of hydration is established, so that the distribution and development of temperature in concrete can be described more comprehensively and accurately.

