BS EN 12371:2010 Natural stone test methods. Determination of frost resistance
BS EN 12371 is a European Standard specifies a method to assess the effect of freeze/thaw cycles on natural stones. The standard contains provision for both a shorter technological test (Test A) to assess the effect of freeze/thaw cycles on the relevant performance characteristics and an identification test (Test B).
Some marbles, as defined in BS EN 12440, undergo changes in physical properties as a result of the test conditions rather than the freeze/thaw cycles. In these cases, additional tests (for example BS EN 14066) should be applied.
Contents of BS EN 12371:
Foreword
1 Scope
2 Normative references
3 Principle
4 Symbols
5 Apparatus
6 Preparation of the specimens
6.1 Sampling
6.2 Size of specimens
6.2.1 Technological test (Test A)
6.2.2 Identification test (Test B)
6.2.3 Putting reference marks on the specimens
6.3 Monitoring core temperature
6.4 Drying the specimens
6.5 Immersion of the specimens
6.6 Determination of the apparent volume
6.7 Number of cycles
6.7.1 Technological test (Test A)
6.7.2 Identification test (Test B)
7 Test procedure
7.1 Arrangement of the specimens in the freezing tank
7.2 Description of the freezing and thawing cycles
7.3 Control measurements to determine the freeze/thaw resistance
7.3.1 Technological test (Test A)
7.3.2 Identification test (Test B)
8 Expression of the results
8.1 Technological test (Test A)
8.2 Identification test (Test B)
9 Test report
Annex A (informative) Test cycles
Bibliography
