Tests on natural stone

Petrographic examination NBN EN 12407
Real density, apparent density and porosity NBN EN 1936
Water absorption NBN EN 13755
Coefficient of capillary water absorption NBN EN 1925
Compressive strength NBN EN 1926
Flexural strength NBN EN 12372
Ultrasonic velocity NBN EN 14579
Freeze–thaw resistance NBN EN 12371
Slip resistance NBN EN 14231
Abrasion resistance NBN EN 14157
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