Bonaccord Black Bush Hammered, Sweden Black Granite Slabs & Tiles

A bush hammered surface is created through the use of a tempered metal tool attached to a pneumatic hammer.

Areas of use: flagstone paving, stairs etc to eliminate the risk of slipping. A bush hammered surface is also suitable for walls, ground level cladding and building veneers

BRÄNNHULT GRANITE (DIABASE) - Bonnarcord Black
Technical properties Standard Unit
Compressive strength EN 1926 Mpa 244
Flexural strength EN 12372 Mpa 26,5
Abrasion resistance, Böhme DIN 52 108 1) cm3/50 cm2 6,0
Abrasion resistance, Böhme EN 14157 2) mm3 5984
Water absorption EN 13755 weight % <0,1
Apparent density EN 1936 kg/m3 2970
Breaking load at dowel holes EN 13364 N 4350
Slip resistance, honed surface EN 14231 SRV, dry 49
Slip resistance, honed surface EN 14231 SRV, wet 14
Rupture energy, Thickness: 21 mm EN 14158 J 3,0
Petrographic composition EN 12407*
Plagioclase % 61
Pyroxene % 23
Quartz % 7
Biotite % 5
Tested by SP, Swedish National Testing and Research Institute