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).
- Invented, designed and manufactured in California
- Super accurate P.I.D. controller
- Low thermal mass RTD
- Over temperature safety cut-out
- Double walled temperature cabinet
- Unique temperature control suppression
- Made in California
| Construction | Double-walled construction 16-gauge welded steel exterior 18-gauge corrosion resistant stainless steel interior |
| Insulation mm (inch) | 89 mm (3.5) of high density fiberglass insulation |
| Controller | Programmable 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 Range | Ambient to 200°C (390°F) |
| Vents | Double exhaust vents for dissipation of expended volatile from specimen |
| Air Flow Adjustment | Needle valve (long taper) |
| Air Pressure Gauge | Range 0 – 100 psi |
| Heat Exchanger | 5/16 inch diamete copper tube |
| Electrical Supply | CS0325-1060: 1 Ph 208-230 V 60 Hz (Domestic) CS0325-1061: 1 Ph 208-230 V 60 Hz (International) CS0325-1062: 1 Ph 208-230 V 60 Hz (With Digital Flowmeter) CS0325-1063: 1 Ph 208-230 V 60 Hz (With Digital Flowmeter – International) CS0325-1050: 1 Ph 208-230 V 50 Hz (International) CS-0325-1051: 1 Ph 208-230 V 50 Hz (With Digital Flowmeter – International) |
| Dimensions (WxDxH) mm (inch) | 1016 x 660 x 915 (40 x 26 x 36) |
| Estimated Weight Kg (lbs) | 173 (380) |
