Kuru Black, Kurun musta dioriitti

References




Gallery

Search for other pictures

Quarrying Company

Tampereen Kovakivi Oy

Layout updated: 2017-10-06 4:52

content updated: 2017-01-29 13:11:03

Kuru Black is a fine- and medium-grained, non-foliated black diorite with shades of grey.

Finnish Natural Stones | Kuru Black, polished
Kuru Black, polished

Quarrying place, address/coordinates (EUREF-FIN geographical)

Vehkajärvi, Kuru, 1980

Technical properties

EN_13755 Water absorption

0,03

%  
EN_1936 Apparent density

2880**

kg/m3  
  Open porosity

0.1**

kg/m3  
EN_12372 Flexural strenght Fresh material

20.1**

MPa  
  Min. expected value

17.6**

MPa  
  After 56 freeze-thaw cycles, with 1%NaCl 20.3** MPa  
  Min. expected value 17.8** MPa  
EN_12371 Frost resistance, change of flexural strenght

+1.3

%  
EN_1926 Compressive strenght Fresh material

196**

MPa  
  Min. expected value

156**

MPa  
  After 56 freeze-thaw cycles, with 1%NaCl 181** MPa  
  Min. expected value 141** MPa  
EN_14157 Abrasion resistance

15**

mm  
EN_13364 Breaking load at dowel hole

4100

N  
  Min. expected value

2742

N  
EN_14231 + CEN/TS 16165 Annex C Slip resistance Dry surface    
  Wet surface    

** Tested in 2016; otherwise 2006

Mineral content

Plagioclase

38.3

Wt%
Amphibole

23.9

Wt%
Biotite

14.4

Wt%
Ilmenite

6.4

Wt%
Magnetite

4.9

Wt%
Clinopyroxene

4.8

Wt%
Apatite

3.7

Wt%
Quartz

2.5

Wt%
Accessory minerals

1

Wt%

Surface Treatments

polished
polished
matt
matt
flamed
flamed
bush
bush hammered
By clicking a thumbnail above you may change the surface treatment on the left.
You can enlarge the picture on the left by clicking it. (30 cm x 20 cm or 30 cm x 30 cm actual size)