ASPHALT & BITUMEN
Rolling Thin Film Oven (RTFOT)
The apparatus consists of a forced air circulation oven suitable for temperatures up to 180°C and equipped with a rotating shelf placed inside along with a coil that preheats the air directed into the sample container.
This test is used to determine the effect of heat and air on a moving film of semi-solid asphaltic materials. The effects of this treatment are determined from measurements of the properties of the asphalt before and after having heated in a oven for 75 minutes at 163°C a moving film of asphaltic material while air at a rate of 4 l/min is directed against the sample.
Adjustable flow meters for regulation of air jet inside the oven
High precision flow meter
Digital temperature controller
Electronically controlled motor with reduced gear for precise carriage rotation
Safety device that stops the carriage in case the door is opened during the test
Emergency stop button