Automatic Uniaxial &Triaxial Testing Machine

Product code

Standarts

Standards

EN 1926, 14580; ASTM D2664, D2938, D3148, D5407, D7012, ISRM

The UTR-0450.PVPR Automatic Pressure Unit is used to apply lateral pressure in the Hoek Cell during the triaxial testing of rock specimens. The power pack is equipped with a proportional valve to provide a sensitive control of the loading rate and to maintain a constant confining pressure to within 0.1 bar. Pressure is controlled by using the PID closed loop controlled electronics. The user can define the set lateral pressure and display the lateral pressure through the U-Touch PRO Control Unit.

Any capacity which depends of rigidity and sizes of rock specimens to be tested, EN or ASTM automatic compression testing machines can be used for applying vertical load required for the triaxial and uniaxial tests. As option for weaker rock specimens, the compression machines can be upgraded with option UTC-0210 special calibration procedure to have Class 1 starting from 1% of the full range of the capacity.

To see the details of Hoek Triaxial Cells required for triaxial testing of rock specimens, please look at the page of Rock Triaxial Test Accessories.

SAFETY FEATURES of UTR-0450.PVPR

• Maximum pressure valves to avoid machine overloading
• Emergency stop button
• Software controlled maximum load valve

UTR-0450.PVPR is supplied complete with 1.5 m long hose.

UTR-0455 Hoek Triaxial Cell BX

Specifications of UTR-0450.PVPR

Manual Uniaxial & Triaxial Testing Machine

Product code

Information

Standards

EN 1926, 14580; ASTM D2664, D2938, D3148, D5407, D7012, ISRM

UTR-0452 Manual pressure equipment is used for maintaining the constant lateral pressure in the Hoek triaxial cells and consists of a hydraulic hand pump with oil reservoir (UTGE-3800), a precision LPI digital readout unit (UTC-4920.LP), a pressure transducer (UTGM-1440) and a 2m long flexible hose with quick release coupling(UTGP-1144).

Any capacity which depends of rigidity and sizes of rock specimens to be tested, EN or ASTM automatic compression testing machines can be used for applying vertical load required for the triaxial and uniaxial tests. As option for weaker rock specimens, the compression machines can be upgraded with option UTC-0210 special calibration procedure to have Class 1 starting from 1% of the full range of the capacity

To see the details of Hoek Triaxial Cells required for triaxial testing of rock specimens, please look at the page of Rock Triaxial Test Accessories.

Hoek Triaxial Cell

Product code

Information

ASTM D5407; ASTM D7012

Hoek Cells comprise a steel body complete with two quick release self-sealing couplings for oil inlet and outlet, two steel hollow end caps which are screwed to the cell body, a rubber sealing sleeve, an upper and a lower loading caps with spherical coupling, an upper and a lower spherical seat pistons, two pieces end caps and two load speaders.

Digital Point Load Test Apparatus with Hydraulic Bottle Jack

Product code

Information

ASTM D5731, ISRM

The UTR-0540 Digital Point Load Test Apparatus is used for determining the strength values of a rock specimen, both in the field and in the laboratory.

Consists of a 70 kN capacity load frame with an upper and lower conical platens, a digital readout unit, pressure transducer and a hydraulic loading cylinder.

A ruler assembled on the frame allows the direct measurement of the distance between the conical platens before and after the test.

The compression load is measured by a pressure transducer connected to an advanced digital easily transportable wooden case.

UTR-0544 Loading platens for compression and indirect/splitting tensile tests on rock specimens should be ordered seperately.

Supplied complete with face protective goggles and carriage box. Loading platens set for compression and indirect/splitting tensile strength test should be ordered separately.

SPECIFICATION

• Load Capacity : 70 kN
• Digital Display: 2 x 16 characters
• Resolution : 32.000 div.
• Accuracy : ± 1%
• Load Readibility: 1 N
• Serial Port for PC or thermal connection
• Piston stroke : 115 mm
• Distance between conical platens: 114 mm
• Distance between columns: 110 mm
• Distance between compression platens: 126  mm

Specimen Extruder for Hoek Triaxial Cells

Product code

Information

The UTR-0470 Specimen Extruder is used to extrude the rock sample from its jacket while avoiding to emptying the pressure fluid (confining oil) out of the Hoek Cell. It consists of a steel frame with a rack and pinion mechanism.

The Specimen Extruder is supplied complete with;

• BX Type Adaptors
• NX Type Adaptors
• HQ Type Adaptors

Accessories for Uniaxial Compression, Indirect Tensile (Brazil) and Splitting Tensile Tests

Product code

Information

ASTM D7012, D3967; ISRM

UTR-0400 is used for uniaxial compressive strength tests of rock core specimens with Ø47,6 mm to Ø63,5 mm acc. to ASTM.Supplied with 2 pcs. 32mm and 1 pcs. 20 mm distance pieces.

UTR-0408 and UTR-0410 are used for uniaxial compressive strength tests of rock core specimens acc. to ISRM and ASTM.UTR-0408 is supplied with 1 pcs. 10 mm and 2 pcs.15 mm distance pieces and UTS-0410 with 1 pcs. 15 mm and 2 pcs.20 mm distance pieces.

The radius of the upper and lower jaws of UTR-0422 and UTR-0424 are designed in accordance with the sample diameter and they are supplied with spherical seat with a 25- mm half ball bearing acc.to ISRM.

UTR-0426 is designed for testing splitting tensile strength of rock specimens with diameter of 54,7 mm and 63,5 mm and supplied with a distance piece acc. to ASTM.

WARNING : Many rock types fail in a violent manner when loaded to failure in compression. For protecting the operator from this danger, the specimens can be wrapped with a protective shield before the compression test.

Original Schmidt Test Hammer Type L

Product code

Information

ASTM D 5873; ISRM Suggested Method

In rock mechanics, The Type L Original Schmidt (UTR-0563 is commonly used for the classification of rock cores and brittle rock.

UTR-0563 Type L Hammer is a portable and relatively inexpensive instrument for measuring the surface hardness of rock. The hammer can be used efficiently in both laboratory and the field setting.

The mechanism of operation is simple: a hammer released by a spring, indirectly impacts against the rock surface through a plunger and the rebound  is read on scale of hammer then  compressive strength is read directly from the curve ranging from 10 to 70 MPa (1,450 to 10,152 psi).

The type L hammer is used on NX or larger core specimens or block specimens having an edge length of at least 6 cm.

UTR-0565 Rock Cradle apparatus consists of a universal V shaped sample holder unit suitable for all standard rock core specimen sizes from EX to NX (21.46 mm to 54.74 mm dia.) and a V shaped guide attached to the core holder to keep the rebound hammer perpendicular to the surface of the test specimen.

The impact area of UTC-3040E Calibration Anvil used for the calibration of rock test hammers is hardened min. 52HRC.

UTR-0563 Original Schmidt Type L  Hammet is supplied complete with;

•  Grinding Stone                
• Operating Instructions                                                  
• Carrying Case

Technical Specifications