Test Certificates by Istituto Giordano S.p.A.
(laboratory recognized by Ministry of Public Works,  Law 05/11/1971, N.1086 con D.M. N.22913 del 27/11/1982)

THE FOLLOWING TESTS WERE DONE ON SPECIMENS OF ROCK NAMED PIANELLO STONE. PIANELLO STONE IS EXTRACTED FROM THE "GORIETTI S.r.l. La Pietra di Pianello®" QUARRY, SITED IN LOC. S. SAVINO (PERUGIA), AND IS PROCESSED IN THE ESTABLISHMENT OF PIANELLO (PERUGIA). PIANELLO STONE IS USED FOR FLOORING, WALL CLADDING, QUARRY FILLING AND INDOOR AND OUTDOOR FURNISHING.

Test Certificate N.79248/64225/94
Compressive Strength.
 

Test Certificate N.79249/64226/94
Determination of Specific Weight of dry specimens.

After article n. 22 of circular n.532 of 17/02/54 of Ministry of Public Works.

By R.d. n.2232 of 16/11/39.

Test Result:
Average Compressive Strength : 1543,17 Kg./cm2

Test Result:
The Specific Weight of dry specimens is given by the weight of a well-dried piece of stone, divided by the volume of that piece.
Specific Weight = 2,705 g/cm3

Test Certificate N.79251/64228/94
Freezing Treatment.

Test Certificate N.79250/64227/94
Tribometer Frictional Wear. Determination of the Coefficient of Abrasion

After Article n. 23 of circular n.532 of 17/02/54 of Ministry of Public Works.

After Article n. 24 of circular n.532 of 17/02/54 of Ministry of Public Works.

Test Result: After undergoing treatment, the specimens tested did not show any cracks nor traces of damage nor weight loss. Their average compressive strength was similar to that of the corresponding check specimens that had not undergone any treatment.

Test Result:
Coefficient of Abrasion "K"=0,61

Test Certificate N.107436/86726/97
Water Absorption. Determination of the Coefficient of Imbibition
 

Test Certificate N.107437/86727/97
Determination of Shear Strength (breaking strength) for paving material.

 

After Art. 7 of R.d. n.2232 of 16/11/39

After R.d. n.2234 of 16/11/39.

Test Result:
Average Coefficient of Imbibition = 0,00989

Test Result:
Average Modulus of Rupture = 0,475 Kgm.

Test Certificate N.107435/86725/97
Determination of Tensile Strength. (bending strength)
 

By R.d. n.2234 del 16/11/39.

Test Result:
4 specimens were tested.
Each specimen was laid on two parallel supporting blades with rounded edges, divided by a distance of cm.10. Then a third parallel blade gradually transferred the load on the opposite side along the median line. Modulus of Rupture = 258,67 Kg./cm.

The above-mentioned test results regard exclusively Pianello Stone mined and processed by the GORIETTI S.r.l. La Pietra di Pianello® Company. This publication may not be reproduced or transmitted, by any form or by any means, without the prior permission of the owner. Any person who infringes the present rule will be charged with counterfeit and will be punished by Law.

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