: Test a "control group" of specimens for compressive strength before any freeze-thaw cycles. Cycling :
: Cast or cut specimens from the concrete mix or structure. Ensure they are free of visible defects.
: Submerge specimens in the testing liquid for 48 hours until they reach a constant mass. gost 10060 2017
: The average mass loss due to scaling and surface damage does not exceed 2% .
: Once the target number of cycles (the "F" grade) is reached, test the "main group" for compressive strength. 5. Evaluation Criteria : Test a "control group" of specimens for
: The average compressive strength of the frozen/thawed specimens has not decreased by more than 5% compared to the control specimens.
establishes the laboratory methods for testing how concrete resists deterioration caused by freezing and thawing. : Submerge specimens in the testing liquid for
: Concrete is assigned a frost resistance grade (e.g., F100, F200), where the number represents the minimum number of freeze-thaw cycles the concrete can survive while meeting specific strength and mass loss criteria. 2. General Testing Requirements