OUR STONES

PORPHYRY

GREY BROWN PORPHYRY

grey brown porphyry

Origin

Italy

Petrological family

Acid and inequigranular magmatic effusive rock - Rhyolitic ignimbrite

Mineralogical Composition

quartz (70-75%), feldspars (sanidine, plagioclase), biotite, pyroxenes and femic minerals

Collection

Abitare Pavimenti

Selection

APTITUDES

propertiesGrey brown porphyry: squared slabs, irregular slabs, cubes, curbstones and paving blocks, copings and treads, door sills, window sills and processed, baseboards. Products with special dimensions available upon request. Material available in both natural surface and processed. Origin: Italy. Qualità: Hardness and resistance to wear; chromatic homogeneity of the natural surface; good aging while preserving the original appearance; suitable for harsh climates and strong temperature changes; suitable for use in swimming pools, spas, maritime shores; resistance to strong acids, oils and stains.
Hardness and resistance to wear
Hardness and resistance to wear
6
Chromatic homogeneity of the natural surface
Chromatic homogeneity of the natural surface
4
Good aging while preserving the original appearance
Good aging while preserving the original appearance
7
Suitable for harsh climates and strong temperature changes
Suitable for harsh climates and strong temperature changes
6
Suitable for use in swimming pools, spas, maritime shores
Suitable for use in swimming pools, spas, maritime shores
6
Resistance to strong acids, oils and stains
Resistance to strong acids, oils and stains
7

Score
[ from 1 to 2: Poor] [ from 3 to 5: Good ] [ from 6 to 7: High ]

PHYSICAL/MECHANICAL PROPERTIES

1

DENSITY

DENSITY

reference standard: UNI EN 1936

Apparent density

average value: 2568 Kg/m3

7

RESISTANCE TO IMBIBITION

RESISTANCE TO IMBIBITION

reference standard: UNI EN 13755

Water absorption at atmospheric pressure

average value: 0.12 % var. grams


6

RESISTANCE TO FROST

RESISTANCE TO FROST

reference standard: UNI EN 12371

Compressive strength after freezing cycles

average value: 0.12 mPa

Flexural strength after freezing cycles

average value: 21.80 mPa
Note: The compressive strength increases after freeze and thaw cycles.

5

COMPRESSIVE STRENGTH

COMPRESSIVE STRENGTH

reference standard: UNI EN 1926

Uniaxial compressive strength

average value: 185.00 mPa


4

flexural strength

flexural strength

reference standard: UNI EN 12372

Flexural strength under concentrated load

average value: 22.80 mPa

6

RESISTANCE TO WEAR

RESISTANCE TO WEAR

Abrasion wear

reference standard: UNI EN 14157 / 1341
average value: 2.04 mm

Scores
[ from 1 to 2: Poor] [ from 3 to 5: Good ] [ from 6 to 7: High ] [7+: Exceptional]

AVAILABLE PRODUCTS

Squared slabs
Squared slabs
10/15/20/25/30/40 x end-to-end
natural surface
sheared sides
15/20/25/30/35/40 x end-to-end
natural surface
sawn sides
Note
Slabs with natural surface with nornal thickness: from 3 to 5 cm / thin: from 1 to 3 cm / large: from 5 to 8 cm
Irregular slabs
Irregular slabs
normal (average diagonal 30 cm)
natural surface
split sides
big (average diagonal 60 cm)
natural surface
split sides
Note
Slabs with natural surface with nornal thickness: from 3 to 5 cm / thin: from 1 to 3 cm / large: from 5 to 8 cm
Cubes
Cubes
4/6 - 6/8 - 8/10 - 10/12
natural surface
sheared sides
10/10
natural surface
sheared sides
Curbstones and Paving blocks
Curbstones and Paving blocks
head 10 spessore 5/8 - 8/11
head with natural surface
sheared sides
head 12 spessore 10/15
head with natural surface
sheared sides
head 5-6-8-10-12 height 22/25
split or bush-hammered head
sides with natural surface
Copings and Treads
Copings and Treads
from 20 to 40 and split or processed edges from 3 to 6 cm
Baseboards
Baseboards
height 8/10/12/15/20 and flamed surface
Door sills, Window sills and processed
Door sills, Window sills and processed
customized dimensions
recommended surface processing: FLAMING
Products with special dimensions available upon request
Material available in both natural surface and processed
Discover all surface processing. Go to the Gaverini website
Dimensions in cm.

OUR STONES

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