Freezingthawing durability of concretes subjected to single damage factor (SDF), double damage factors (DDF) or multiple damage factors (MDF) was studied by accelerated freezingthawing test.

• 用快冻法研究了混凝土在单一破坏因素(single damage factor, SDF)、双重破坏因素(double damage factors, DDF)和多重破坏因素(multiple damage factors,MDF)作用下的冻融寿命。