Asphalt Rolling Thin Film Oven (RTFO)
Asphalt Rolling Thin Film Oven (RTFO)
Asphalt Rolling Thin Film Oven (RTFO)
- Description:
Asphalt Rolling Thin Film Oven (RTFO)
- Model:
CS325
- Manufacturer:
James Cox & Sons
Product Information
  • Description
  • Standard
  • Feature
  • Specification
  • Configuration
  • Software
Description

沥青旋转薄膜烘箱试验

The RTFO accurately simulates the short term aging of asphalt binder which occurs during mixing



The Superpave PG binder specification looked for tests which would closely simulate field performance. Hotmix asphalt binder experiences significant aging during the manufacturing and laying process. Investigating this phenomenon within a laboratory environment, with a repeatable and simple test is very useful within the design process.



The Rolling Thin Film Oven (RTFO) test is used to measure the effect of heat and air on a moving film of semi-solid asphalt binder. The results of this treatment are determined from measurements of the binder properties before and after the test. Repeatability of the test is directly related to the accuracy with which the oven temperature can be maintained and the reproducibility of the thermal rise time of the system. The invention of RTFO by James Cox & Sons led to the present day AASHTO, ASTM and EN standards for Rolling Thin Film Oven test (RTFOT).


System Elements

• Long life sustainable bearings to overcome temperature fluctuation

• Integrated  controller which allows for the quicke response time without excessive overshoot

• Testing jars (full set) supplied according to standard requirements

• tainless steel interior

• Integral dual 4 digit LED displays allows viewing of the process temperature and set point simultaneously

• Heavy duty “flush fit” door locking system

Standard

• ASTM D2872-12

• AASHTO T240

• EN 12607-1

• SHRP

• JTG E20 T 0610-2011

Feature

• accurate P.I.D. controller

• Low thermal mass RTD

• Over temperature safety cut-out

• Double walled temperature cabinet

• Unique temperature control suppression

Specification
DescriptionTechnical Specification
Construction Double-walled construction

16-gauge welded steel exterior

18-gauge corrosion resistant stainless steel interior

Insulation  (inch)89mm (3.5) of high density fiberglass insulation
ControllerProgrammable microprocessor UL listed
Temperature Display

Measured Temperature – 4 digit red LEDs

Temperature Set Point – 4 digit green LEDs

Thermal Protection

Prevents oven from overheating in the event of control failure

Temperature RangeAmbient to 200°C (390°F)
VentsDouble exhaust vents for dissipation of expended volatile from specimen
Air Flow Adjustment

 Needle valve (long taper)

Air Pressure Gauge Range 0~100 psi
Dimensions1016 x 660 x 915mm  (WxDx H)
Estimated Weight173Kg (380lbs) approx


Configuration
Accessories/Spare Parts
Accessories

Accessories are not included in the price of main device (unless stated otherwise) and may be purchased separately if required.

• CRT-OV-RTF-GSCGlass Sample Container for CRT-OV-RTFs

• CRT-OV-RTF-GLHigh Temperature Gloves

• CRT-OV-RTF-DASDry air system

• CRT-OV-RTF-DFM Digital Flowmeter, Panel Mount

• CRT-OV-RTF-SGSilica Gel (1.5 lb can)

• CRT-OV-RTF-JARJar Cooling Rack

• CRT-OV-RTF-BSBottle Scrapper

• CRT-OV-RTF-STANDLab Stand