용도:시공단계에서의 아스팔트 노화 저항성측정

아스팔트의 노화는 아스팔트 공장에서의 제조과정시 높은 온도와 공기의 흡입으로 인한 산화와 휘발 작용으로 인한 노화가 있으며,
아스팔트 포장 건설이 완료된 후에는 기후 빛 주위환경에 의한 산화에 의해 주로 발생하게 된다.

Rolling-ThinFilm-Oven (RTFO) meets requirements for Superpave thin film and loss on heating tests.
The RTFO is prefered for simulation of short-term aging of asphalt binders occuring during mixing and laydown of hot mix asphalt. The RTFO measures the effect of heat and air on a moving film of semi-solid asphaltic material.

Asphalt binder is rapidly aged during the construction process. Heating the asphalt to mixing temperature and blending it with the aggregates causes rapid oxidation and volatilization. The Rolling Thin Film Oven is used to condition asphalt binder samples to simulate the change in binder characteristics during the construction.

Applicable Standards: ASTM D 2872, ASHTO T 240

Features

-Large observation window in door provides
clear view of sample bottles and thermometer
-UL listed control pannel, Many local authorities will readily approove equipment with a UL panel
-Complete dry air piping assembly including pressure regulator and gauge, flow control and flowmeter andmoisture indicator, allows
single point connection to dry air supply.
-Include ASTM loss-on-heat-thermometer
confirming to requirement 13c specification.
-Eight sample bottle included
-Digital temperature controller enhances readability and stability to save time and reduce error
-Solid state relay heater control provides precise temperature control for consistentiy high process results
-Overtemperature protection
-Bottle carousel is easily removed

The Rolling-ThinFilm-Oven is preferred by SHRP for simulating short term aging of asphalt binders.
It measures the effect of heat and air on a moving film of semi-solid asphaltic material.
Maximum temperature is 400¨¬F (204¨¬C).
T he circular test rack holds up to 8 special glass containers (included) and rotates at 15 rpm.
Complete dry air piping assembly including pressure regulator and gauge, flow control, flowmeter and moisture indicator allows single point connection to dry air supply.
Large observation window in door provides clear view of sample bottles and thermometer.
Inside chamber dimensions: 16 x 17 x 13 in. (41 x 44 x 34 cm).
Overal size:98*71*94cm, 139kg
Control stability:+-1F at 325F(+-0.5 at 163C)
Recovery time :door open 2minutes at 302F=<10 minutes
--approximate minutes to insert samples in a preheated oven
Heater :2.0KW
Plug connector Amps:13.2(14.7 on208V)
**In stock and available for immediate shipment.
Applicable Standards: ASTM D 2872, ASHTO T 240

230V/( 60Hz )

Bottle Cooling Rack

Bottles

Tongs