A34 50KN Bitumen Bending Creep Testing Asphalt Mixtures BBR Bending
Beam Rheometer Tester
Standard: ASTM D6648
Applications Asphalt binder test
Dimensions, in (mm) WxDxH49x49x41in (1,245x1,245x1,040mm) LxWxH
Estimated Shipping Weight, lb(kg)487lbs (221kg)
HM-59 and HM-73 Bending Beam Rheometers (BBR) by ATS measure the
flexural creep stiffness of asphalt binder from ambient to -40°C to
predict low-temperature thermal cracking of asphalt pavements.
Special molds form small beam samples of binder for testing, and
deflection of the beam is recorded as a constant load is applied.
Load, displacement and bath temperature are displayed in real time
via tabular and graphic forms.
Both models use an air bearing system to assure reliable loading
with accurate and repeatable results. A linear variable
displacement transducer (LVDT) with a range of 6.35mm and accuracy
to ±2µm measures deflection. The stainless steel three-point bend
apparatus is easily removed and reinstalled in the base unit for
convenient sample preparation and loading.A fluid bath controls
temperature of the Ethylene Glycol/Water/Methanol mixture down to
-40°C (-40°F). Process temperature is controlled by two independent
platinum RTD temperature transducers to maintain stability. Both
models fully comply with ASTM/AASHTO requirements. A source of
clean, dry, compressed air at 50 PSIG minimum must be provided by
the user.
Models come with five aluminum specimen Molds with mylar strips, a
Calibration Kit with required weights, and Confidence Beam.
Calibrated test weights and a certified LVDT NIST-traceable
standard are also provided.
HM-59 ATS Bending Beam Rheometer uses a desktop computer with
pre-loaded control, acquisition and analysis software for precise
operation. Safe, rapid cooling of the test fluid is provided by the
mechanical refrigeration system.
HM-73 ATS Touch Screen Bending Beam Rheometer retains all of the
performance features of the HM-59, but incorporates a
state-of-the-art touch-screen design for easy set up and operation.
The touch-screen controller has walk through menus for guidance and
the machine can be started, stopped and monitored remotely through
an App installed on a smartphone, iPad, or tablet.
The user-friendly control, acquisition and analysis software is
preloaded on the internal computer and allows daily verification
and periodic calibration of load cell, LVDT, and RTD transducers. A
USB port is located on the front of the unit for software upgrades
and data storage. The fluid bath is chilled by a thermoelectric
cooling system.
Features:
Both models are fully compliant with ASTM and AASHTO requirements
Optimal solution for predicting low-temperature thermal cracking of
asphalt pavements via flexural creep stiffness measurements Air
bearing systems ensure repeatable results and reliable loading
Fluid baths accurately control temperature of the Ethylene
Glycol/Water/Methanol mixture down to -40°C (-40°F)
Included Items:
HM-59 ATS Bending Beam Rheometer with pre-loaded computer OR
HM-73 ATS Touch Screen Bending Beam Rheometer
Accessories Included With Both Models:
Five aluminum specimen molds with mylar strips
Calibration Kit with required weights and Confidence Beam
Calibrated test weights
Certified LVDT NIST-traceable standard
