Kuru Grey, Kurun harmaa graniitti

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Quarrying Company

Tampereen Kovakivi Oy

Layout updated: 2017-10-06 4:52

content updated: 2017-01-29 13:13:05

Kuru Grey is a fine-grained, non-foliated, equigranular grey granite. There is some variation in colour among blocks from different quarry sites. All interior and outdoor uses. Well suited raw material for quarry stone products.

Finnish Natural Stones | Kuru Grey, polished
Kuru Grey, polished

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

Kulhanvuorentie 34260, TER?—LAHTI 6855000:2492500

Technical properties

EN_13755 Water absorption

0.13

%  
EN_1936 Apparent density

2630**

kg/m3  
  Open porosity

0.5**

kg/m3  
EN_12372 Flexural strenght Fresh material

22.1**

MPa  
  Min. expected value

20.6**

MPa  
  After 56 freeze-thaw cycles, with 1%NaCl 20.3** MPa  
  Min. expected value 18.9** MPa  
EN_12371 Frost resistance, change of flexural strenght

+3.2

%  
EN_1926 Compressive strenght Fresh material

218**

MPa  
  Min. expected value

161**

MPa  
  After 56 freeze-thaw cycles, with 1%NaCl 192** MPa  
  Min. expected value 175** MPa  
EN_14157 Abrasion resistance

15**

mm  
EN_13364 Breaking load at dowel hole

2550

N  
  Min. expected value

1659

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

** Tested in 2016; otherwise 2006

Mineral content

K-feldspar

31.5

Wt%
Plagioclase

30.8

Wt%
Quartz

30.7

Wt%
Biotite

4.1

Wt%
Accessory minerals

1.5

Wt%
Muscovite

1.5

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)