冻融条件下混凝土损伤演变与强度相关性研究

冻融作用下混凝土的损伤过程通常用动弹性模量的变化来表征，通过对比分析，采用更具有实际意义的超声波声速构筑了损伤变量，重点研究了混凝土由于冻融作用引起的损伤演变和强度的相关性．结果表明由超声波测试得到的声速值可以方便地估算出混凝土的强度．此结果可作为受冻融作用的混凝土结构评估的参考和依据．

The correlation between concrete strength and damage evolution in freeze-thaw cycles

The damage process of concrete under freeze-thaw cycles was usually attributed by the variation of dynamic modulus of elasticity. Supersonic velocity was used to establish a more practical damage variable and the correlation of damage evolution and the concrete strength was mainly researched. The test results indicated that the strength of concrete could be estimated by supersonic velocity values. The proposed results could be used to evaluate the safety of concrete structure under freeze-thaw cycles.