marble, granite, basalt, limestone, travertine, slabs, tiles
marble, granite, basalt, limestone, travertine, slabs, tiles
PHYSICAL-CHEMICAL PROPERTIES |
STANDARD OF TEST |
REQUIRED VALUE | FMG AVERAGE VALUE | |||||
WATER ABSORPTION | ISO 10545.3 | ≤0,6% | 0,10 % (*) | |||||
FLEXION RESISTANCE | ISO 10545.4 |
Modulus ≥35 N/mm2 Breaking strength ≥1300N |
188 Kg / cm2 | |||||
DEEP ABRASION RESISTANCE | ISO 10545.6 | Volume ≤175 mm3 |
120 mm3 (as tested by Smith Emery laboratory) |
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FROST RESISTANCE | ISO 10545.12 | Must not produce noticeable alteration to surface. | Frost-proof | |||||
COEFFICIENT OF LINEAR THERMAL-EXPANSION | ISO 10545.8 | ≤9x10 ̄6 °C ̄1 | ≤6,5x10 ̄6 °C ̄1 | |||||
COLOR RESISTANCE TO LIGHT | DIN 51094 | Must not produce noticeable colour variation. | No change in brightness or colour of samples. | |||||
CHEMICAL RESISTANCE | ISO 10545.13 | Must not produce noticeable signs of chemical attack. | Not attacked | |||||
STAIN RESISTANCE | ISO 10545.14 | 1 ? X ? 5 | stains removed by hot running water (without detergent)(**) | |||||
FRICTION COEFFICIENT (SLIPPERINESS) |
BCRA REP CEC 6/81 |
Satisfactory friction | 0,42 - 0,75 (*) | |||||
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