Borghamn-limestone

Borghamn-limestone are of high quality and has been used in many historic buildings in the country. The wear resistance has been put to the test in schools and regiments, while the subtly elegant appearance can be seen in churches and cathedrals. In modern construction, arguments like long life, low maintenance cost and recyclable natural materials weighs heavily. With our modern production facility, we adapt the stone by the architect and the client's wishes.

Borghamn-limestone is unique. It is closer to 485 million years old, which is twice as old as any other limestone. This makes it a tighter and harder than stone than both limestone and marble from around the world. Swedish limestone is therefore highly suitable as a building material with high strength requirements, such as staircases and floors. Borghamn-limestone is a natural choice of material for floors, stairs, wall facings, window sills or restoration items.

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Technical features

Feature	Standard	Unit	Value
Compressive strength	EN 1926	MPa	187
Flexural strength	EN 12372	MPa	20,4
Abrasion resistance	DIN 52 1081	cm3/50cm2	20,7
Abrasion resistance	EN 141572	mm3	20668
Water absorption	EN 13755	vikt %	0,6
Density	EN 1936	kg/m3	2650
Wear resistance	EN 13364	N	2500
Slip resistance, polished surface	EN 14231	SRV, torr	49
Slip resistance, polished surface	EN 14231	SRV våt	12
Impact resistance	EN 14158	J	2,0
Petrographic composition	EN 124073
Kalcit matrix		%	71
Kalcit, crystalline		%	29

Tested by SP, Swedens Testing- and Research institute

₁ Thickness based
₂ Weight based
₃ Only mineral composition, major minerals and possible. shells and skeletons so-called fossils