Automatic Grinding Machine
The SCTC-1040 Automatic Grinding Machine provides fast grinding of
cylinder specimen ends to obtain plane and parallel surfaces according to EN and ASTM standards.
Three units of Ø38 to 100 mm or two units of Ø150-160 mm concrete cylinders ends can be ground
simultaneously with the suitable cradle and water restraint panel. The length of the any specimen
must be longer than 70 mm.
According to ASTM and EN standards, the planeness accuracy of grinded surface is 0.05 mm. and the
deviation of perpendicularity of the side with reference to the end faces is 0,5°
The equipment has selectable advance grinding time functionality by user from 50 to 400 seconds.
Optimum grinding time per end of all type specimens is 90 to 120 seconds.
The cradle which specimens are fixed on has automatic bidirectional radial displacement ability. The
safe and ergonomic design prevents the user to exposure to water and dust and provides easy access
to the water inlet and outlet. Specimen cradles and water restraint panels can easily be installed
without the need for any assembly.
Automatic Pressure System
The SCTR-0550 Automatic Pressure System 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 system control and readout unit.
The TFT unit is designed to control the power pack and processing of data from pressure transducers
which is fitted to the power pack.
All the operations are controlled from the front panel consisting of a 800×480 pixel 65535 color
resistive touch screen display and function keys 4 analogue channels are provided for load-cells,
pressure transducers or displacement transducers.
It is easy to use menu options. It displays all menu option listings simultaneously, allowing the
operator to access the required option in a seemless manner to activate the option or enter a
numeric value to set the test parameters. Its specimen setting sub-menu lists different specimen
types including but not limited to cube, cylinder, block, beam, beam double upper bearers, cube
splitting tensile, cylinder splitting tensile, paving block splitting tensile and kerb flexure. The digital
graphic display is able to draw real-time “Load vs. Time” or “Stress vs. Time” graphics.
The unit offers many addition unique features. You can save more than 10000 test results in its
internal memory. Storage capacity can be increased up to 32 GB using SD memory cards or USB diskdrives.
It has support for various off-the-shelf USB printers, supporting both inkjet and laser printers.
The unit is equipped with a built-in internal camera which can save real-time video during testing for
security purposes. Thanks to its built-in internet protocol suite, every aspect of device can be
controlled remotely from anywhere around the world. Last but not the least, it has support for
Android tablets permitting to control and monitor your testing equipment remotely.
Compression Jig Assembly
The jig assembly is used for uniaxial compressive strength tests of rock
core specimens with 50 to 55 mm dia. and 100 to 110 mm height and
consists of a two-column frame fit with an upper platen with spherical
seat that moves vertically sustained by a spring. The lower platen is fit
to the base. The assembly is also used for compressive shtenght test of
natural stone core specimens.
SCTR-0568 Compression Jig Assembly is used for uniaxial compressive
strength for rock core specimens.
Digital Point Load Test Apparatus
The SCTR-0580 Digital Point Load Test Apparatus consists
of a 60 kN capacity load frame with a hydraulic loading
ram driven by a hand pump. The frame is adjustable for
testing of samples up to 102 mm diameter. 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.
Hoek Cells have been designed to be used for triaxial
testing of rock specimens.
Hoek Cells comprise a steel body complete with two quick release self-sealing couplings, two steel
end caps which are screwed to the cell body, 2 pieces of upper and 2 pieces of lower loading caps
with spherical coupling and a rubber sealing sleeve to separate the specimen from the cell fluid.
Laboratory Core Trimmer and Cut-Off Machine
The SCTR-0300 Laboratory Core Trimmer and Cut-Off Machine is used for obtaining rock samples
perfectly machined (cubes, prisms, etc.) from irregular rock or core pieces.
The SCTR-0300 is supplied complete with a vice to hold irregular pieces firmly in place up to 70×140
mm approx. A second V shaped vice is used to cut cores to a maximum size 75 mm dia. x 140 mm
height. Longer cores can be obtained by turning the samples upside down in the vice. It is supplied
complete with a cooling water inlet.
The SCTR-0304 Diamond Cutting Blade has a diameter of 230 mm, 2.5 mm thickness and the
maximum cutting area is 110×70 mm. The speed of the blade is 3000 rpm.
The SCTR-0306 Double-Faced Cup Wheel has a diameter of 200 mm and 16 mm thickness. It is used
for finishing the sample ends parallel and at right angles to the axis.
The SCTR-0306 Double-Faced Cup Wheel, SCTR-0304 Cutting Blade and SCTR-0302 Cooling
Recirculating Pump with Reservoir should be ordered separately
Laboratory Type Core Drilling Machine
This machine is specifically used in the laboratory for taking core samples from large sized rock,
natural stone and concrete samples. The machine has a fastening equipment to tie the material
during the drilling cycle. The coring area is protected by a transparent cylinder. To take core with
max. dia. 100 mm from rock samples, SCTR-0255 special fastening device including transparent
protection cylinder and coring bits should be ordered separately.
manual pressure system
The manual pressure system is used for maintaining the constant lateral pressure in the Hoek triaxial cells
and consists of a hydrolic hand pump with oil reservoir (SCTGE-3800), a precision LPI digital readout unit
(SCTC-4920), a pressure transducer (SCTGM-0110) and a 3 m long flexible hose with quick release
The manual pressure system is used with any Hoek triaxial cell and 2000 kN Automatic Compression
Testing Machine (SCTC-4231) for the triaxial tests. Other type of compression testing machine (respect to
the capacity) can be used instead of SCTC-423
Original Schmidt Test Hammer
SCTR-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.
SCTC-3040 Calibration Anvil, manufactured from a special steel alloy, is used for the calibration of
Rock Classification Hammer
SCTR-0562 Rock Classification Hammer together with SCTR-0565 NW Rock Cradle is an easy-to-use
apparatus for measuring the rebound index on rock cores and samples. The level of impact energy is
0.74 Nm. Sample is positioned horizontally and the rebound index is calculated by the average value
determined after several measurements which are performed perpendicularly to the longitudinal
axis of the sample. Rock Classification Hammer is supplied complete with carrying case.
SCTR-0565 Rock Cradle apparatus consists of a universal 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 vertical
magnetic block which holds the hammer.
Rock Schmidt-Rock Test Hammer
SCTR-0564 Rock Schmidt Test Hammer (Proceq) is the world’s most advanced rebound hammer fully
adapted specifically to the extremely varied rock testing applications (Testing on cores and blocks).
The RockSchmidt incorporates statistical methods based on ASTM and ISRM recommendations and
provides the user with the freedom to define his own statistical process for determining a rebound
Impact Angle Independence: The rebound value is independent of the impact direction.
Optimized for Field Work: Tighter sealing against dirt and dust intrusion for longer life. Significantly
lighter and more ergonomic than the classic Schmidt hammer. A large number of readings can be
saved and downloaded later to a PC.
Preset Statistics: Statistics methods recommended by ISRM and ASTM are implemented into the
hammer for automatic calculation of the rebound number. The option is also there to define a user
specific statistics method.
Unconfined Compressive Strength: ISRM recommends a correlation between UCS and the rebound
value based on the formula UCS = aebR (where R is the rebound value). A correlation in this format
may be defined in the PC software and downloaded onto the RockSchmidt.
E-Modulus: ISRM recommends a correlation between elastic modulus and the rebound value based
on the formula Et = cedR (where R is the rebound value). A correlation in this format may be defined
in the PC software and downloaded onto the RockSchmidt.
Weathering Grade: Impacting on the same location twice can be used to correlate to weathering
grade. The ISRM recommended method has been included in the device.
Rock Shear Interface
The Rock Shear Interface (RSI) is a versatile system
capable of performing the consolidation and shearing
phases for natural and artificial rock joints on rock
cores up to 83 mm (3.26 in) in diameter, direct and
residual shear on soils as well as for determining the
interface frictional properties of soil and geosynthetics
on sample sizes up to 150 mm x 150 mm ( 6.00 in x
The system consists of a computer controlled unit that
utilizes micro stepper motors to control and apply
verticals load and horizontal displacements. Built-in
electronics control test and display data in real time.
The computer controlled program runs under the
latest Windows platform. It includes the capability to display the current status of latest and
graphically portray the progress of the test in real time. The system also includes the capability for
the operator to alter the test process and conditions at any stage during the test.
This is a turnkey system that includes hardware and software for recording all test input data and
settings of selected test parameters, performing standard engineering calculations on the data, and
producing graphically plotted and printed output in accordance with current testing standards.
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