关键词: 混凝土, 冻融, 强度, 衰减模型

Abstract: There are many non-destructive methods for deterioration detection and health evaluation of old hydraulic structures. However, how to quantitatively determine the influence of frost damage on concrete properties, aging and state of old structures is a problem. In this paper, the deterioration rules of mechanical properties of concrete in freeze-thaw process are studied, and the relationship between damage amount and concrete properties is established, aiming to provide a theoretical basis for diagnoses and identification of concrete aging state of hydraulic structure.

Key words: concrete, freeze-thaw, strength, attenuation model