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LARGE HYDRAULIC FOUR POINT
BENDING MACHINE
The only machine on the market to accept variable beam lengths.
Bending
tests
are
widely
used
to
measure
the
stiffness
modulus
and
assess
the
fatigue
resistance
of
asphaltic
paving
materials.
The
Large
Hydraulic
Four-Point
Bending
Beam
Machine
uses
advanced
servo-hydraulic
technology
and
a
high-speed
digital
data
acquisition
and
control
system,
together
with
user-friendly
software.
During
testing,
both
graphical
and
tabular
data
are
displayed
on
screen,
and
all
test
data
are
stored
to
disk
in
a
Microsoft Excel™-compatible format.
The
test
frame
is
housed
in
a
temperature-controlled
cabinet
with
fan-
assisted
air
circulation
and
a
temperature
range
of
-20
to
60°C.
Its
unique
constant-torque
clamping
system
and
three-transducer
deflection
measurement
setup
allow
the
machine
to
be
configured
to
accept
different
beam
sizes.
This
ensures
that
the
ratio
between
beam
dimensions
and
the
maximum
aggregate
size
of
the
test
specimens
satisfies
the
requirements
of
the relevant European specifications.
KEY FEATURES
•
Performs tests according to EN 12697-24 Annex D, EN 12697-26 Annex B, ASTM D7460 and AASHTO T321
•
Advanced software allows the user to build and modify test routines for research-level testing
•
Frequency range 0.1 to 60Hz
•
High-quality servo-hydraulic four-point bending machine
•
Double acting fatigue rated hydraulic actuator with integral stroke transducer
•
Star servo valve with ‘Sapphire Technology’
•
Can be used with simple one or research level three LVDT transducers
•
Accepts various beam sizes: 380 to 660mm in length and 50 x 50mm to 100 x 100mm cross-section
•
Integral Temperature controlled cabinet
•
Covered for noise reduction
•
Sinusoidal controlled strain or controlled stress fatigue test modes
•
User defined wave shapes can be used to simulate different types of vehicles
•
Advanced software allows the user to run EN, ASTM and AASHTO analysis concurrently
•
Multistage and multi frequency sequences for Master Curves
•
Relaxation periods can be programmed – for the investigation of healing
•
Camera can be triggered by software for crack initiation and propagation analysis
•
Save full-wave data for any or every cycle for hysteresis analysis
•
Constant torque motorized specimen clamping to eliminate errors due to localized beam indentation
•
Supplied with a certificate of calibration
•
Manufactured in the United Kingdom
•
We (Cooper) are the only manufacturers of Large Hydraulic Four Point Testing machines in the world
KEY USES
•
Mix design
•
End product specification
•
Assessment of new materials
SOFTWARE
•
User friendly, intuitive and reliable Windows™ software developed using LabVIEW™
•
The user interface can be translated into the user’s preferred language – please enquire
•
One software package performs both fatigue and complex modulus testing
•
Stored test data can be analysed and compared with other test data utilising a spreadsheet package
•
Utilities
are
included
for
curve
fitting
of
acquired
data;
testing
of
system’s
inputs
and
outputs;
phase
correction
and
a
transducer
database
for storing calibration factors
STANDARDS
EN 12697-24 ANNEX D
EN 12697-26 ANNEX B
ASTM D7460
ACCESSORIES
Accessories are not included in the price of main device (unless stated otherwise) and may be purchased separately if required.
PVC Dummy Specimen 100x100mm
CRT-PVC-BEAMLARGE
Integrated Compressed Air Option
CRT-LH4PT-COMPAIR
SPECIFICATIONS
Force Transducer (kN)
±10kN
Specimen Transducer Range (mm)
3 x ±1mm
Actuator stroke (mm)
10mm
Frequency (Hz)
0.1 to 60Hz
Compressed Air
7–10 bar @ 100 L/min (optional integral extra)
PC
Included
MACHINE SPECIFICATION
Weight (Kg)
1200Kg
Dimensions (mm) (W x D x H)
1050 x 1600 x 2100mm
Working space required (mm) (W x D x H)
2050 x 2600 x 2300mm
WEIGHT & DIMENSIONS
Electrical Supply
*
3 Phase 415 Volts 50 Hz @ 16A
* Other electrical supplies available on request
ELECTRICAL SPECIFICATION
Calibration,
Annual
Service
and
Maintenance
Contracts
are
available for this device.
Please enquire for further details.
Note
This device should be checked and calibrated annually.
CALIBRATION & MAINTENANCE
Temperature (°C) (Integral Cabinet)
-20 to 60°C
TEMPERATURE
AASHTO T321
The content of this website, including but not limited to text, graphics, images, logos, and software, is the property of Cooper Research
Technology or its content suppliers and is protected by international copyright laws. Unauthorized use, reproduction, distribution, or
modification of any material on this site is strictly prohibited without prior written consent from Cooper Research Technology.
All trademarks, product names, and company names or logos cited herein are the property of their respective owners.
© Cooper Research Technology. All rights reserved.
QUALITY ASSURANCE
OUR CUSTOMERS
LARGE HYDRAULIC FOUR POINT
BENDING MACHINE
The only machine on the market to accept variable beam lengths.
Bending
tests
are
widely
used
to
measure
the
stiffness
modulus
and
assess
the
fatigue
resistance
of
asphaltic
paving
materials.
The
Large
Hydraulic
Four-Point
Bending
Beam
Machine
uses
advanced
servo-
hydraulic
technology
and
a
high-speed
digital
data
acquisition
and
control
system,
together
with
user-friendly
software.
During
testing,
both
graphical
and
tabular
data
are
displayed
on
screen,
and
all
test
data are stored to disk in a Microsoft Excel™-compatible format.
The
test
frame
is
housed
in
a
temperature-controlled
cabinet
with
fan-
assisted
air
circulation
and
a
temperature
range
of
-20
to
60°C.
Its
unique
constant-torque
clamping
system
and
three-transducer
deflection
measurement
setup
allow
the
machine
to
be
configured
to
accept
different
beam
sizes.
This
ensures
that
the
ratio
between
beam
dimensions
and
the
maximum
aggregate
size
of
the
test
specimens
satisfies the requirements of the relevant European specifications.
KEY FEATURES
•
Performs
tests
according
to
EN
12697-24
Annex
D,
EN
12697-26
Annex B, ASTM D7460 and AASHTO T321
•
Advanced
software
allows
the
user
to
build
and
modify
test
routines for research-level testing
•
Frequency range 0.1 to 60Hz
•
High-quality servo-hydraulic four-point bending machine
•
Double
acting
fatigue
rated
hydraulic
actuator
with
integral
stroke transducer
•
Star servo valve with ‘Sapphire Technology’
•
Can
be
used
with
simple
one
or
research
level
three
LVDT
transducers
•
Accepts
various
beam
sizes:
380
to
660mm
in
length
and
50
x
50mm to 100 x 100mm cross-section
•
Integral Temperature controlled cabinet
•
Covered for noise reduction
•
Sinusoidal
controlled
strain
or
controlled
stress
fatigue
test
modes
•
User
defined
wave
shapes
can
be
used
to
simulate
different
types of vehicles
•
Advanced
software
allows
the
user
to
run
EN,
ASTM
and
AASHTO
analysis concurrently
•
Multistage and multi frequency sequences for Master Curves
•
Relaxation
periods
can
be
programmed
–
for
the
investigation
of
healing
•
Camera
can
be
triggered
by
software
for
crack
initiation
and
propagation analysis
•
Save full-wave data for any or every cycle for hysteresis analysis
•
Constant
torque
motorized
specimen
clamping
to
eliminate
errors due to localized beam indentation
•
Supplied with a certificate of calibration
•
Manufactured in the United Kingdom
•
We
(Cooper)
are
the
only
manufacturers
of
Large
Hydraulic
Four
Point Testing machines in the world
KEY USES
•
Mix design
•
End product specification
•
Assessment of new materials
SOFTWARE
•
User
friendly,
intuitive
and
reliable
Windows™
software
developed using LabVIEW™
•
The
user
interface
can
be
translated
into
the
user’s
preferred
language – please enquire
•
One
software
package
performs
both
fatigue
and
complex
modulus testing
•
Stored
test
data
can
be
analysed
and
compared
with
other
test
data utilising a spreadsheet package
•
Utilities
are
included
for
curve
fitting
of
acquired
data;
testing
of
system’s
inputs
and
outputs;
phase
correction
and
a
transducer
database for storing calibration factors
The content of this website, including but not limited to text, graphics, images,
logos, and software, is the property of Cooper Research Technology or its content
suppliers and is protected by international copyright laws. Unauthorized use,
reproduction, distribution, or modification of any material on this site is strictly
prohibited without prior written consent from Cooper Research Technology.
All trademarks, product names, and company names or logos cited herein are the
property of their respective owners.
© Cooper Research Technology. All rights reserved.
QUALITY ASSURANCE
OUR CUSTOMERS
BITUMEN LABORATORY TESTING
BITUMEN AGING
UNIVERSAL MATERIAL TESTING
FRENCH MIX DESIGN (EME)
UNBOUND MATERIALS TESTING
WHEEL TRACKING
LOW TEMPERATURE TESTING
BALANCE MIX DESIGN
ASPHALT COMPACTION
BENDING BEAM TESTING
SPECIMEN CUTTING AND PREPARATION
ROAD QUALITY TESTING/SLIP RESISTANCE
