Mayener Basaltlava, Paving Stone, Building Stone, Tuff Stone, Sandstone
Grey - Basalt
Gross density: 2.3 g / cm³ Porosity: 15-25 vol.-% Pressure resistance: 65 N/mm² Bending tensile strength: 12.4 N/mm² Wear resistance: 12 cm³ for a 50 cm² surface area Breaking load at dowel hole: 3.497 N (for 3 cm thickness) Absorption of water: 8 vol.-% Thermal expansion: 0.009 mm/mK Elasticity module: 58,000 - 103,000 N/mm² Frost/de-icing salt resistance:yes Non-slip safety class:R13 (diamond ground 60)
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