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CALIFORNIA BEARING RATIO TESTING MACHINES – CBR

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STANDARDS: EN 13286-47 | ASTM D1883 | BS 1377-4 | AASHTO T193 | CNR UNI 10009 | NF P94-078
Used to load the penetration piston into the soil sample at a constant rate of 1.27 mm/min, and to measure the applied loads and piston’s
penetrations at determined intervals.
Matest proposes a wide range of machines: hand operated, motorized, dual speed, universal multispeed; load measurement by load ring, or by
electric load cell and digital unit with X/Y graphic recorder of load/penetration through RS 232 port to PC.

S209 KIT
CBR LOADING MACHINE
HAND OPERATED, LABORATORY MODEL
Load is applied through a meckanical jack and handwheel.
Upper beam can be adjusted in height.
Foreseen of fast approach device of the base plate.
The S209KIT CBR machine comprises:
S209-01 CBR laboratory frame
S212-01 CBR penetration piston
S370-10 Load ring 50 kN capacity
S376 Dial gauge 10×0.01 mm
S212-03 Dial gauge holder
Dimensions: 430x380x1180 mm
Weight: 80 kg approx.

S211 KIT
CBR LOADING MACHINE, 50 KN
MOTORIZED SPEED RATE: 1.27 MM/MIN
Load is applied through a screw jack driven by an electric motor at
a costant penetration rate of 1.27 mm/min (ASTM, BS, EN Spec.)
achieved by a built in gear box and assured also under load.
Upper beam can be adjusted in height.
Foreseen of fast approach device of the base plate and electric end
of stroke switches of the load plate to save the machine from wrong
manipulations.
The S211KIT CBR machine comprises:
S211-10 CBR motorized frame
S212-01 CBR penetration piston
S370-10 Load ring 50 kN capacity
S376 Dial gauge 10×0.01 mm
S212-03 Dial gauge holder
Power supply: 230V 1ph 50Hz 750W
Dimensions: 430x380x1180 mm
Weight: 98 kg approx.

ACCESSORIES
S210-02 CBR RATE INDICATOR
Used to apply the correct rate of
1.27 mm/min penetration to hand
operated CBR machine S209 KIT.
Power supply: 230V 1ph 50Hz
S374 BRAKE DEVICE, it holds the max. applied load on the dial
gauge of the load ring, with manual zero setting.
Suitable for S209 KIT and S211 KIT machines.

S374-01 ELECTRIC DEVICE FOR AUTOMATIC STOP of the CBR
machine when reaching the max. capacity load.
To prevent any overload damage this device is mounted
on the proving ring of the S211 KIT machine.

S212N
UNIVERSAL MULTISPEED LOAD FRAME 50 KN
DIGITAL, TOUCH-SCREEN
This motorized machine with electronic digital touch-screen controlled
by microprocessor, is suitable to perform all the tests where
the requested speed rate is within:
0.05 to 63 mm/min with max. load of 50 kN
It can therefore perform:
– Unconfined test with rate of 0.635 mm/min.– CBR test with rate of 1.27 and 1 mm/min.
– Marshall test with rate of 50.8 mm/min.

– Splitting tensile test on Marshall specimens.
– Quick Triaxial (with trixial cell and suitable accessories)
The speed rate is infinitely variable, easily and promptly selected.
Graphic display ¼ VGA color Touch-Screen.
Time/date and language selection (English, French, German, Spanish,
Italian, Polish).
Symbols of pushbuttons functions.
Foreseen of electric end of stroke switch of the load
plate to save the machine from wrong manipulations.
Upper beam can be adjusted in height.
Supplied without load ring and accessories which
have to be ordered separately.
Power supply: 230V 1ph 50-60Hz 750W
Dimensions: 480x450x1400 mm
Weight: 140 kg approx.

S213-05N
CBR/MARSHALL 3 SPEEDS FRAME 50 KN
The frame is provided of three fix speed ranges, easily selectable by
a frequency changer (inverter) activated by an electric switch:
1.00 mm/min. for CBR tests (Australian and old BS Standards)
1.27 mm/min. for CBR tests
50.8 mm/min for Marshall tests.
Upper beam can be adjusted in height.
Foreseen of electric end of stroke switch of the load plate to save
the machine from wrong manipulations.
Supplied without load ring and
accessories which have to be
ordered separately.
Power supply:
230V 1ph 50-60Hz 750W
Dimensions:
450x400x1200 mm
Weight: 130 kg approx.

ACCESSORIES for S212N
and S213-05N frames
CBR test
S212-01 Penetration piston
S370-10S Load ring 50kN with electric stop safety device
S374 Brake device to hold max. load
S376 Dial gauge 10×0.01 mm
S212-03 Dial gauge holder
MARSHALL test
S212-05 Load piston
B046N Stability mould
B047 Flow meter
B047-01 Dial gauge for flow meter
S370-08S Load ring 30kN with electric stop safety device
S374 Brake device to hold max. load
UNCONFINED test
S212-08N Upper + lower compression plates, Ø 100 mm
+ distance piece with rod
As Alternative
S212-09N Upper + lower compression plates, Ø 165 mm
with upper seat ball
S212-03 Dial gauge holder
S376 Dial gauge 10×0.01 mm
S370-02S Load ring 2kN with electric stop safety device
S374 Brake device to hold max. load

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