natural stone series

Technical Parameters of ASA(rustic)PROPERTIESCHINAGB STANDARDS (GB/T4100-2006APPENDIX G)ASA STANDARDSWater absorption E(%)Average E≤0.5,Single E≤0.6Average E≤0.3Breaking strength(N)≥1300≥1700Modules of rupture(Mpa)Average≥35,Single≥32Average≥38,Single≥35The deviation of the average size of each tile from the work size±0.5±0.3Thickness(%)±5±4Rectangularity(%)±0.6±0.2Straightness of sides(%)±0.5±0.2Surface flatness(%)±0.5±0.2Resistance to staining(class)≥class 3class 5Frost resistanceNo rupture after 100 tests under temperature -5°C-5°CNo rupture after 100 testsThermal shock resistanceNo rupture after 10 tests under temperature 15°C-145°CNo rupture after 10 testsResistance to chemicals(Class)≥GBGAAppearance QualityColor deviationthe main area of the tiles shall be free fromvisible defectsno obvious color deviation with visual measurement at a distance of 2 meters Other DefectsDefect with visual measurement at a distance of 0.8 metres≤ 3%Restriction of radionuclidesClass B,CClass A