Compliance with following International Standards:
ASTM D1754, IS 1212 , ASTM D 2872 & AASHTO T240
Purpose:
Oven is designed to determine the effects of heat and air on a film of semisolid asphaltic materials. The effects of this treatment are determined from measurements of selected asphalt properties before and after the test.
Details of Apparatus:
The entire test method comprises one each of Hot Air oven, Rotating Shelf, Sample Containers and Thermometer as per following descriptions.
Hot Air Oven:
- CE Certified design
- Internal circuit wiring as per CE Norms
- High density glass wool insulation is filled up in all sides of chamber to offer minimum chamber heat loss
- Oven is fitted with heating elements on all three sides, ensuring uniform temperature distribution throughout the working chamber
- With built-in forced air circulation arrangement for uniform heat distribution inside the working chamber
- Special heavy duty Stainless steel lock and door hinges with spring and roller mechanism
- Oven door contains observation window of dimensions 100 x 100 mm (4 x 4 in) and with two sheets of glass separated by an air space, through which a vertical thermometer can be read without opening the door
- Rotating shelf constructed such that it offers minimum resistance to air circulation for better heat distribution while sample container are in place
- Thermometer holder (fits in circular shaft of shelf), which holds thermometer in vertical position
- Adjustable air ventilation mounted at top
- Operation on 220/230 Volt, 50 Hz, Single phase, AC Supply
- Complete with pilot indicating lamps, 2 meter cord wire and power plug.
Rotating Shelf:
- Single metal circular shelf having diameter between 250-450 mm as per ASTM D1754
- Shelf construction is such that it provides a flat surface for support of the containers without blocking air circulation, through the shelf, when the containers are in place.
- Shelf is suspended by a vertical shaft and centered with respect to the horizontal interior dimensions of the oven
- Shelf is rotated by electric motor at a rate of 5.5 ± 1.0 RPM as per ASTM D1754
- Can accommodate four (4) sample containers
Sample Containers:
- Inside Diameter : 140 mm
- Depth : 9.5 mm
- Flat bottom design
- Made of Aluminum Material