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Varieties
Finishings
Advantages of granite

NEGRO ANGOLA

Country of origin    Angola

VISUAL DESCRIPTION
Black igneous rock with fine to coarse grained size.

FINISHES
Flamed, bush hammer dressed, sand blasting, sawn, brushed, honed, polished,…

FORMATS
Slabs, tiles and all kind of pieces commercials and to measure.

APPLICATIONS
Universal use: outside and inside. Suitable for decorative uses.

STANDARD

TEST

RESULT

UNE-EN 12407

Petrographic examination 

Gabro

UNE-EN 1936

Apparent density

2840 kg/m³

Open porosity 

0,1 %

UNE-EN 13755

Water absorption at atmospheric pressure

0,1 %

UNE-EN 14157

Abrasion resistance

16,1 mm

UNE-EN 13364

Breaking load at dowel hole

2650 N

UNE-EN 1926

Compressive strength

201 MPa

UNE-EN 12372

Flexural strength

19,5 MPa

UNE-EN 12371

Frost resistence 

Decrease of Rf after 12 cycles

1,6 %

Decrease of Rf after 48 cycles

2,8 %

UNE-EN 14066

Resistence to ageing by termal shock

Visual alterations

Alteración ligera

Mass variation  

0,03 %

Variation of dynamic elastic modulus of elasticity

67,1 %

UNE-EN 14231

Slip resistance (polished)

Dry test (SRV)

84

Wet test (SRV)

7

Slip resistance (honing)

Dry test (SRV)

59

Wet test (SRV)

19

Radiation description

Radiation Protection 112

0,07 (*)

 

(*) Values under 6 comply with established limits in RD 78/2001 about Sanitary Protection against ionized radiations

 

Theese results only relate with tested samples, so only may be used like guidance..

 
 










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