Classification Tests

Digital rock strength index apparatus 100 kN cap. model 32-D0550: detail of loading frame
This section includes a range of products for a preliminary rock classification, in terms of visual identification with rock piks and hardness scale, Strength Index using Point-load apparatus, Rebound Index on cores and rock specimens using rock Schmidt hammer test. Also rock permeability, using a Hoek cell and relative accessories, can be evaluated as a rock classification parameter.

Digital Rock Strength Index Apparatus

Used for measuring rock strength index on rock cylinders and irregular shaped samples.

Standards ASTM D5731 ISRM

Digital rock strength index apparatus 100 kN cap. model 32-D0550 complete with set of lower and upper platen 32-D0550/D5 (accessory)
Description

 

The rock strength index apparatus consists of a high stability load frame 100 kN cap. with hydraulic loading ram actuated by a hand pump. Loading frame and manual pump are independent resulting in a superior functionality and usability of the equipment.
The unit is conforming to ASTM D5731 and ISRM suggested method and the wide testing area allows to test both rock cylinders and irregular shaped samples.
It features an ergonomic digital readout unit with graphic display battery operated and  membrane keyboard.
The compression load is measured by a in-built pressure transducer, assuring the best accuracy and resistance to the failure shocks. A ruler is assembled on the frame allowing the direct measurement of the distance D between the conical platens before and after the test.
The complete set is housed in an ergonomic carrying case with wheels.

 

Main Features

 

  • 100 kN capacity
  • Superior functionality and usability of the equipment, since the pump is separate from the frame
  • Ergonomic digital read out unit with wide graphical display and 6 keys membrane keyboard
  • Effective resolution: 18 bit (1/262’000 div.)
  • Load measurement accuracy: ± 1 % 
  • Load resolution: 1 N
  • Supplied complete with traceable calibration certificate for load measurement accuracy 
  • Set of lower and upper platen with spherical seat for compression tests on small cylinders available as accessory 
  •  
Products

 

32-D0550

Digital rock strength index apparatus, 100 kN cap.conforming to ASTM D5731 and ISRM suggested method. 

 

Technical Specifications
  • 100 kN capacity
  • 128 x 80 pixels graphic display with 6 keys membrane keyboar
  • In-built rechargeable LiPo type battey
  • Effective resolution: 18 bit (1/262’000 div.)
  • Load measurement accuracy: ± 1 % 
  • Load resolution: 1 N
  • Load measurement by pressure transducer
  • Lower crossbeam position measurement by in built meter 
  • Piston travel: 100 mm
  • Distance between conical platens: 100 mm
  • Distance between compression platens (accessory 32-D0550/D5): 102 mm
  • Distance between columns: 108 mm
  • Dimensions and weight of frame / hydraulic jack:
    • Dimensions (l x w x h): 200x200x418 mm
    • Weight: 14 kg
  • Dimensions and weight of manual pump:
    • Dimensions (l x w x h): 798x160x310 mm
    • Weight: 8.3 kg
  • Dimensions and weight of carrying case:
    • Dimensions (l x w x h):  447 x 265 x 558 mm
    • Weight: 7.7 kg

 

Accessories and Spare Parts

 

32-D0550/A7
Set of hardened conical platens
 
32-D0550/A9
Set of spare gaskets for the hydraulic cylinder fitted in the point load tester model 45-D0550
 
32-D0550/D5
Set of lower and upper platen 52 mm dia with spherical seat for compression test on concrete microcors
 
32-D0550/D6
Mounting/Dismounting tool for the conical points fitted on point load machine 45-D0550
 
32-D1717
Clear safety goggles

Rock Classification Hammer

Used to measure the rebound index on rock cores and samples.

Standards ASTM D5873 ISRM

Rock classification hammer with cradle
Description

 

Used to measure the rebound index on rock cores and samples. The device is simple, easy to use, and is similar to the one used for testing concrete. The level of impact energy only is different: 0.735 Nm. Rock cores are positioned horizontally and the rebound index is obtained from the average of several measurements performed perpendicularly to the longitudinal axis, using the ASTM rock cradle 32-D0562/A (see accessories) as shown in the picture.
Supplied complete with case.

  • Weight approx.: 1.5 kg
Products

 

32-D0561/C
Rock test classification hammer with low impact energy 0.735 Nm. Supplied with hard plastic carrying case. Conforming to astm D5873 and ISRM.
 
32-D0561/C1
Rock test classification hammer with low impact energy 0.735 Nm. Supplied complete with traceable calibration certificate and hard plastic carrying case. Conforming to astm D5873 and ISRM.
Accessories and Spare Parts
 
 
32-D0561/C2
Abrasion stone for testing hammer
 
32-D0562/A
ASTM universal rock cradle for testing rock cores conforming to ASTM
 
58-C0184
Calibration anvil for concrete test hammer type -N- and -NR-

Rock Permeability Equipment

Used for measuring rock permeability.

Standards ASTM D8079

Oil / water constant pressure apparatus model 28-WF4312 with Hoek cell, permeability end caps, burette, support base and metal / glass sleeve
Description

 

This apparatus, originally designed for soil mechanics test applications, can also be used to provide an infinitely variable constant pressure and is used in conjunction with the Hoek cell fit with the permeability end caps, for the investigation of the permeability of rock at high confining pressure, in the laboratory. The apparatus comprises: motorized hydraulic pump; honed piston/spring assembly; precision test gauge 0-3500 kPa range; cylindrical oil/water interchange vessel; valves; 2 kg of high viscosity oil.
The lateral pressure can be applied with the 32-D0558 Low friction pressure maintainer or, as alternative, with the 32-D7022/S sercomp S or 32-C7022/RCK Sercomp Rock, servo-hydraulic control console which is part of the Automatic Uniaxial and Triaxial test systems.

  • Pressure range: 0 to 3500 kPa
  • Overall dimensions: 310x300x390 mm
  • Weight approx.: 16 kg

As alternative to oil-water constant pressure system 28-WF4312 it is possible to use new HYDROMATIC standalone closed loop pressure/volume controller:

  • 28-WF45SG: powers 1 hydraulic pressure line and measures the associated volume change. Used for applying 1 level of pressure higher than atmospheric pressure.
  • 28-WF45DG: powers 2 hydraulic pressure line and measures the associated volume change. Used for applying 2 levels of pressure higher than atmospheric pressure.

Typical configurations of Rock permeability test set

Manual Rock permeability system – Oil and water pressure apparatus
 

Code

Description

Q.ty

28-WF4312

Oil and water constant pressure apparatus

1

28-WF0490

Nylon tubing 6×4 mm dia., 20 m coil

1

32-D0556(1)

Hoek cell NX size, 54.74 mm dia. x 100 mm

1

32-D0556/3

Permeability end caps for NX Hoek cell. Set of two.

1

28-WF4191

Connecting hose to the Hoek cell

1

86-D1160

Graduated glass burette 25 ml cap. x 1.1 ml div.

1

86-D1445

Support base 200×130 mm complete with rod 10 mm dia. x 500 mm

1

86-D1451

Double sleeve metal/glass

1

32-D0558

Low friction pressure maintainer

1

32-C7022/S(2)

Sercomp Rock control console

1



Automatic Rock permeability system – 1 level of pressure with HYDROMATIC standalone pressure / volume controller
 

Code

Description

Q.ty

28-WF45SG

HYDROMATIC standalone closed loop pressure/volume
controller. Powers one hydraulic pressure line

1

32-D0556/KIT

Hydraulic kit for Hudromatic stand-alone system with Hoex cell for rock permeability application

1

32-D0556(1)

Hoek cell NX size, 54.74 mm dia. x 100 mm

1

32-D0556/3

Permeability end caps for NX Hoek cell. Set of two.

1

28-WF4191

Connecting hose to the Hoek cell

1

86-D1160

Graduated glass burette 25 ml cap. x 1.1 ml div.

1

86-D1445

Support base 200×130 mm complete with rod 10 mm dia. x 500 mm

1

86-D1451

Double sleeve metal/glass

1

32-D0558

Low friction pressure maintainer

1

32-C7022/S(2)

Sercomp Rock control console

1



Automatic Rock permeability system- 2 levels of pressure with HYDROMATIC standalone pressure / volume controller
 

Code

Description

Q.ty

28-WF45DG

HYDROMATIC standalone closed loop pressure/volume
controller. Powers two hydraulic pressure lines

1

32-D0556/KIT

Hydraulic kit for Hudromatic stand-alone system with Hoex cell for rock permeability application

1

32-D0556(1)

Hoek cell NX size, 54.74 mm dia. x 100 mm

1

32-D0556/3

Permeability end caps for NX Hoek cell. Set of two.

1

28-WF4191

Connecting hose to the Hoek cell

1

32-D0558

Low friction pressure maintainer

1

32-C7022/S(2)

Sercomp Rock control console

1

(1) Other models are available. See Hock cell details
(2) An alternative to the manual model 32-D0558

Products
 
 
32-D0553/3
Permeability end caps for triaxial cell AX
 
32-D0554/3
Permeability end caps for triaxial cell 1.5″ (38,1 mm)
 
32-D0555/3
Permeability end caps for triaxial cell BX
 
32-D0556/3
Permeability end caps for NX triaxial cells cat. 45-D0556
 
32-D0553/HC

Hoek triaxial cell AX (30.2 mm dia. sample), one rubber sealing sleeve included.

 
32-D0554/HC

Hoek triaxial cell 1.5in (38.1 mm dia. sample), one rubber sealing sleeve included.

 
32-D0555/HC

Hoek triaxial cell BX (42.04 mm dia. sample), one rubber sealing sleeve included.

 
32-D0556/HC

Hoek triaxial cell NX (54.74 mm dia. sample), one rubber sealing sleeve included.

 
32-D0557/HC

Hoek triaxial cell HQ (63.5mm dia. sample), one rubber sealing sleeve included.

Accessories and Spare Parts
 
 
28-WF4312

Constant pressure system 3500kPa oil/water 230V/50Hz/1ph

 
28-WF0490
Nylon tubing 4 x 6 mm dia 20 m coil
 
28-WF4191
Nylon tubing 6mm bore x 8mm outside diameter, 10 metre length
 
32-C7022/S
Sercomp 7, servohydraulic control console for la- teral pressure to perform triaxial rock testing. 230V, 50 Hz, 1ph.
 
32-D0558
Low friction pressure maintainer for lateral pres-sure in the Hoek triaxial cells
 
32-C7022/RCK
SERCOMP7 ROCK, servohydraulic control console suitable for lateral pressure control in triaxial testing system for rock (hoek cell method). In combination with the unit ADVANTEST9 ROCK performs the stress-path test fully automatically. 230V/50Hz/1ph.
 
28-WF45DG

HYDROMATIC standalone closed loop pressure/volume controller. Powers two hydraulic pressure lines and measures the associated volume changes. – max pressure: 3500 kPa – volume capacity: 250cc. 110-220V,50-60 Hz, 1ph.

 
28-WF45SG

HYDROMATIC standalone closed loop pressure/volume controller. Powers one hydraulic pressure line and measures the associated volume change.  – max pressure: 3500 kPa – volume capacity: 250cc. 110-220V,50-60 Hz, 1ph.

Rock Piks and Hardness Scale

Used for preliminary rock identification.

Standards ASTM D8079

32-D1710, 32-D1711
Description

 

Used for preliminary rock identification.

  • 32-D1710
    Fully polished, leather grip. Weight approx.: 650 g
  • 32-D1711
    Fully polished, nylon vinyl grip. Weight approx.: 550 g
Products
 
 
32-D0529
Mohs hardness scale-set of 9 mineral specimens
 
32-D1710
Rock pick pointed tip
 
32-D1711
Rock pick chisel edge

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