*2.4. Cryogenic Test Methods*

According to ACI 376, cryogenic concrete should be assessed the material properties as follows: compressive strength, elastic modulus, poisson's ratio, thermal conductivity and durability such as resistance to cycles of freezing and thawing [28]. With taking all properties into consideration, cryogenic tests were performed according to the procedure and criteria of one cycle of cryogenic temperature condition up to −196 ◦C (Test A method) and cyclic temperature condition between 5–−20 ◦C (Test B method).


**Table 9.** Test method and concrete specimens under cryogenic condition.

**Table 10.** Test method and concrete specimens after 50 freeze-thaw cycles.

