Lessinia Stone

In the high valley of Negrar, in Valpolicella, near the ancient demic centers of Prun, Fane but also in Sant'Ambrogio and its surroundings, the Prun stone has been quarried in the tunnel for centuries, today more commercially known as stone of the "Lessinia". The landscape is marked by the monumental entrances of ancient slabs quarries of particular rocky levels of the Scaglia Rossa Veneta. Its peculiar characteristic is that of constantly presenting, in a section with a thickness of about 8 meters, 73 very regular layers of white-pinkish, modular marly limestones, already naturally separated from each other by a thin veil of clay that facilitates their detachment. This dense and regular stratification has thicknesses ranging from 3 to 20 centimeters and rare and isolated levels of 30-35 centimeters. The color of the rock is variable, with shades ranging from white, to gray and golden. In Valpolicella it has been quarried for centuries, even if at present the studies on the subject do not provide any insight into whether the spectacular Prun quarries could be of Roman, medieval or modern origin. Certainly small preare (stone quarries) existed in the area, as in all of Lessinia and in the Veronese hills, since prehistoric times. In fact, remains of prehistoric houses entirely in stone have been found, from the roofs, to the side walls, to the pavements.

Nell'alta valle di Negrar, in Valpolicella, nei pressi degli antichi centri demici di Prun, di Fane ma anche a Sant'Ambrogio e dintorni, si è cavata per secoli, in galleria, la pietra di Prun, oggi commercialmente più nota come pietra della "Lessinia".

Il paesaggio è segnato dagli imbocchi monumentali di antiche cave di lastrame di particolari livelli rocciosi della Scaglia Rossa Veneta. La sua caratteristica peculiare è quella di presentare costantemente, in uno spaccato dalla spessore di circa 8 metri, 73 strati regolarissimi di calcari marnosi bianco-rosati, modulari, già naturalmente separati fra loro da un sottile velo di argilla che ne facilita il distacco. Tale fitta e regolare stratificazione ha spessori che vanno da 3 a 20 centimetri e rari e isolati livelli di 30-35 centimetri. Il colore dellaroccia è variabile, con tonalità che vanno dal bianco, al grigio e al dorato.

In Valpolicella si è cavato per secoli, anche se allo stato attuale gli studi in proposito non forniscono lumi se le spettacolari cave di Prun possano essere di origine romana, medievale o moderna. Certamente piccole preare (cave di pietra) esistevano in zona, come in tutta la Lessinia e nelle colline veronesi, fin dalla preistoria. Sono stati infatti rinvenuti resti di abitazioni preistoriche interamente in pietra, dai tetti, alle pareti laterali, alle pavimentazioni.

White Lessinia Stone

Pink Lessinia Stone

Other Stones

Agglomerates

Processing

The stone of "Lessinia" due to its great resistance and ductility is suitable for any type of processing such as quarry splitting, scratching on the hollow split, machine scratching on the sawn wood, hand scratching on the sawn wood, bush hammering and brushing, sandblasting, sandblasting and antiquing. , sanding, polishing, brushing etc ..

COSTA RETTA

COSTA A TORO CON LISTELLO

COSTA A MEZZO TORO CON LISTELLI

COSTA A GUSCIA

COSTA A MEZZO TORO

COSTA A TORO

Lessinia Stone Technical Sheet

  PINK WHITE
Main Use Indoor/Outdoor Indoor/Outdoor
Weight per volume unit 2660/2690 kg/m3 2660/2690 kg/m3
Average flexural strength of the results of the 10 Rtf assays
Standard deviation S
11.2 Mpa
0.6 Mpa
16.6 Mpa
Determination of resistance to freezing / thawing in compliance with the EN 12371: 2001
Average flexural strength after 48 freeze / thaw cycles Rtf
Standard deviation S.
Decreased flexural strength after 48 freeze / thaw cycles compared to simple flexural strength

9.8 Mpa
1.2 Mpa
13%

 

16.9 Mpa

Determination of the compressive strength in compliance with the EN 1926: 1999
Average compressive strength Rm
Standard deviation S.
Coeficient of variation V.

140 Mpa
35.3 Mpa

0.25

186 Mpa
Determination of resistance to freezing / thawing in compliance with the EN 12371: 2001

Average compressive strength after 48 freeze / thaw cycles Rm
Standard deviation S
Coeficient of variation V
Decreased compressive strength after 48 freeze / thaw cycles compared to simple compressive strength

136 Mpa
19.6 Mpa
0.1

3%

172 Mpa
Determination of resistance to abrasion according to appendix C UNI EN 1341: 2003; appendix B UNI EN 1342: 2003
Calibrated abrasion value, average of the results of the 6 assays
Calibration value recorded

19.7 mm
19.6 mm

19 mm

Water absorption at atmospheric pressure according to the EN 13755: 2001
Water absorption at atmospheric pressure, average value of the 6 samples
1.2% 0.42%
Determination of resistance to slipperiness in compliance with appendix D UNI EN 1341: 2003; appendix C UNI EN 1342: 2003

Overall average (USRV) sliding element and wet specimen:
- smooth finish
- scratched finish
- saw surface finish

54
77

55

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