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).
Standards
- AASHTO T240
- ASTM D2872
- EN 12591
- CTM 346
Accessories
Accessories are not included in the price of main device (unless stated otherwise) and may be purchased separately if required.
| CRT-OV-RTF-GSC |
Glass Sample Container for CRT-OV-RTFs |
| CRT-OV-RTF-GL |
High Temperature Gloves |
| CRT-OV-RTF-DAS |
Dry air system |
| CRT-OV-RTF-DFM |
Digital Flowmeter, Panel Mount |
| CRT-OV-RTF-SG |
Silica Gel (1.5 lb can) |
| CRT-OV-RTF-JAR |
Jar Cooling Rack |
| CRT-OV-RTF-BS |
Bottle Scrapper |
| CRT-OV-RTF-STAND |
Lab Stand |
Specifications
Technical specifications are subject to change without notice.
| 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 |
| Dimensions (W x D x H) mm (inch) |
1016 x 660 x 915 (40 x 26 x 36) |
| Estimated Weight (approx.) Kg (lbs) |
173 (380) |
