Laboratory tests on rocks

The tests of the certified geotechnical laboratory are standardised tests on rock samples, which can be divided into tests for recognition and classification, mechanical strength and deformability tests, etc.

The following tests are available

DETERMINATION OF PHYSICAL CHARACTERISTICS
(ISRM 1979, part 1):
determination of water content; determination of porosity and density by the saturation and gauge method; determination of porosity and density by the saturation and hydrostatic weighing method

FREEZE-THAW CYCLE TREATMENT
(C.N.R. year XIV no. 80 - 1980; minimum technical time required 6 weeks. Royal Decree no. 3323 - p.8; minimum technical time required 2 weeks):
treatment in successive freeze-thaw cycles, performed in twenty cycles

UNIAXIAL COMPRESSION
(ISRM 1979):
uniaxial compression on a cylindrical specimen with determination of the breaking load, including cutting and grinding of the upper and lower faces of the specimen, dimensional survey, determination of the apparent volume weight

TRIAXIAL COMPRESSION
(ISRM 1983):
triaxial compression on a cylindrical specimen including cutting and grinding of the upper and lower faces of the specimen, dimensional measurement, determination of the apparent volume weight, measurement of the axial and diametric deformations with determination of the elastic modulus and Poisson's coefficient

INDIRECT TENSILE TEST 'BRAZILIAN' TYPE
(ISRM 1978):
indirect 'Brazilian' type tensile test, including specimen preparation, for each specimen

SHEAR TEST WITH HOEK APPARATUS ON SMOOTH OR NATURAL JOINTS
(ISRM 1974):
shear test with Hoek apparatus on smooth or natural joints

DETERMINATION OF BARTON JRC PROFILES
(ISRM 1978)
survey of joint roughness, with determination of Barton profiles (at least four profiles), with estimation of the JRC index, including processing and graphical representation, for each profile

DETERMINATION OF THE IMBIBITION COEFFICIENT ON STONE AGGREGATES
(CNR XXVI no. 137-1992)
determination of the coefficient of imbibition through saturation, conducted on aggregate specimens from 50 to 250 g

LOS ANGELES TEST ON STONE AGGREGATES
(CNR VII no. 34-1973):
determination of abrasion weight loss of stone aggregates with Los Angeles apparatus

DETERMINATION OF THE SENSITIVITY OF STONE AGGREGATES TO FROST
(CNR XIV no. 80-1980; minimum technical time 6 weeks):
treatment at 20 freeze-thaw cycles of an aggregate, including preliminary saturation, final drying and performance of the Los Angeles test on the treated specimen, excluding the initial reference Los Angeles test on the unfrozen specimen

POINT LOAD TEST PLT
(ISRM 1985):
determination of puncture resistance measured on an average of several breaks

MEASUREMENT OF ULTRASONIC VELOCITY OF ELASTIC WAVES
(ASTM D 2845 - 90):
measurement of the ultrasonic velocity of elastic compression waves Vp, excluding specimen preparation

JCS SCLEROMETRIC TEST
(ISRM 1978):
for determining the rebound index performed on rock or concrete (minimum ten rebounds per determination)

The services provided by the Geotechnical Laboratory are aimed at all public and private entities.

Samples delivered to the Geotechnical Laboratory are at the client's own responsibility and expense. The delivery of the samples takes place with the signing of the Acceptance Report, which contains all the necessary information for carrying out the tests. Any changes shall be agreed upon, recorded and accepted by the parties.

The party requesting the laboratory tests must apply in writing. In the event that samples are delivered to the Laboratory through the person in charge of sampling, by post or courier, they must be accompanied by a note containing all the information necessary for the drawing up of the Acceptance Report.

Access to the service can take place at any time.

Testing times are related to the minimum technical time, workload and physical-mechanical condition of the samples, which can only be ascertained with certainty during testing. The issuing of certificates is also linked to the time required for their preparation and approval, and their delivery will take place once payment has been made.

Services for third parties shall be remunerated in accordance with the price list in force at the time of acceptance of the work order, and no discounts or concessions of any kind may be applied, with the exception of the Instrumental Bodies and Local Authorities of the Autonomous Province of Trento, to which a 50% discount shall be applied. Only services provided for Services and Provincial Agencies in the performance of their institutional activities shall be free of charge.

The Customer shall make payment before the delivery of the certificates and in any case within 30 days from the date of issue of the invoice. Payment via PagoPA of variable amount (see attached price list).