混凝土抗冻等级F和混凝土抗冻耐久性指数DF之间的关联

抗冻性作为衡量混凝土结构耐久性的重要指标,现行的混凝土结构设计、施工、验收规范和混凝土结构耐久性规范都有描述,两类规范用不同的指标(抗冻等级F与抗冻耐久性指数DF)衡量。通过有关混凝土抗冻性的诸多规范(规程、标准),明确了抗冻等级F与抗冻耐久性指数DF之间的关系,并阐明了抗冻等级F和抗冻耐久性指数DF衡量同一环境相同部位混凝土结构的抗冻性能时的不匹配性。然后,根据对诸多规范(规程、标准)的有关混凝土抗冻性内容的理解,将抗冻等级F与抗冻耐久性指数DF紧密连接成相辅相成的统一整体。

ARelationship between Concrete Frost Resistant Grade F and Concrete Frost Resistant Durability Index DF

The article describes the frost resistance as the important index to measure the concrete structural durability,the current concrete structural design,construction and acceptance codes,and the concrete structural durability code.Two kinds of code use the different indexes(frost resistant grade F and frost resistant durability index DF) for measurement.The article makes clearly the relationship between frost resistant grade F and frost resistant durability index DF according to many codes,regulations and standards related to the concrete frost resistance,and sets forth the mismatch of the frost resistant grade F and frost resistant durability index DF to measure the frost resistance of concrete structure at the same position under the same environment.Based on the understanding of the relative concrete frost resistant contents of many codes,regulations and standards,the article closely connects the frost resistant grade F and frost resistant durability index DF into the complementary unity.