ROLLING THIN FILM OVENTEST METHOD ASTM D2872

This test method is intended to measure 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 selected properties of the asphalt before and after the test.

Description

Features include:

  • This oven has an air plenum as described in ASTM D2872 specification. It is also provided with squirrel type fan for better uniformity.
  • Double wall convection oven with following inner dimensions: 381 mm high, 483 mm wide, 450mm deep, excluding plenum.
  • The door contains a viewing window made of two sheets of resistant glass separated by an air layer.
  • The oven is vented at top and bottom. Symmetric bottom vents have 15cm² open area symmetric top vents have 9.5cm² open area.
  • The control board includes electronic temperature regulator with digital display and setting at 163°C +/- 0.5°C and a factory calibrated flowmeter for adjusting air flow at 4000 mL/min.
  • The oven has built in 305mm diameter vertical circular carriage to hold 8 glass sample containers rotating at 15+/- 0.2 rpm. It is equipped with air jet for blowing heated air into each bottle at its lowest point of travel.
  • Outlet orifice having 1mm diameter is connected to 7.6 m length copper tubing to heat up air.

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