BONDING PROPERTIES BETWEEN REINFORCEMENT AND CONCRETE AT CRYOGENIC TEMPERATURES

With the attention on LNG storage tanks increasing and a large number of civil engineering constructions being carried out in cold areas, concrete structures will be widely used in low temperature and ultra-low temperature environments. For LNG cryogenic storage tanks, the concrete structure may be applied to an extreme environment with a temperature of 165℃. Thusly it is necessary to perform systematic researches on the material properties at cryogenic temperatures. The mechanical properties of structural materials under ultra-low temperatures are summarized based on review of a large number of domestic and foreign references. Especially, the mechanical performance of reinforced bars & prestressed reinforcements in ultra-low temperature environment, and the bonding behaviors between reinforcements and concrete at cryogenic temperatures are focused on.