BS EN 12607-3-2000 pdf download.Methods of test for petroleum and its products — BS 2000-460.3: Bitumen and bituminous binders — Determination of the resistance to hardening under the influence of heat and air — Part 3: RFT method (Identical with IP 4410 Section 3/2000).
6 Procedure
6.1 Test with the determination of change in mass
Weigh 100 g ± 1 g of the test sample into the flask of the rotary evaporator (4.1) to the nearest 5 mg, and record the mass m0
Allow to cool in a desiccator to a temperature between 18 °C and 28 °C, and determine the mass mE of the sample to the nearest 5 mg.
Heat the oil bath (4.7) to the test temperature ± 1 °C and mount the flask containing the sample in the bath with the axis of rotation of the flask lying at an angle of 450 to the perpendicular and the spherical body of the flask being completely immersed in the bath liquid (see Figure 1). Insert the air-inlet pipe (4.5) along the axis of rotation of the flask with a clearance of 40 mm ± 2 mm between the lower end of the pipe and the bottom of the flask.
NOTE: The reference temperature of the test is 165 °C: however, it is possible to perform the test at other temperatures.
Heat the sample without supplying additional air while the flask rotates at 20 min1 ± 5 mm1. After 10 mm ± 1 mm, switch on the air supply at a flow rate of 500 mI/mm ± 10 mI/mm.
Ensure that the air supply is at a temperature of between 18 °C and 28 °C when entering the air- inlet pipe and that throughout the test, the temperature of the bath liquid is maintained at the test temperature ± 1 °C.
After 150 mm ± 1 mm, measured from the time when air was first admitted, switch off the rotation mechanism and air supply and remove the flask immediately from the bath liquid, When the flask has cooled slightly, wipe off the oil adhering to its outer surface with a cloth saturated with a suitable volatile solvent.
Immediately place the flask in the oven (4.8), set at a temperature of 110 °C ± 5 °C and keep it there for 30 mm ± I mm to permit the sample dispersed over the inner wall during rotation, to collect at the bottom of the flask and to allow remaining solvent to be released.
Cool the flask in the desiccator for 90 mm ± 5 mm to an ambient temperature between 18 °C and 28 °C and weigh the content of the flask to the nearest 5 mg .Calculate the mass mA of the sample after hardening.
Bring the flask carefully to a temperature of 80 °C to 90 °C above the expected ring and ball softening point (EN 1427), and pour the contents immediately from the flask into the various vessels and moulds required for subsequent tests.
If two or more samples of a bitumen are subjected to thermal stressing, pour each sample firstly into a collecting vessel maintained at an ambient temperature of between 18 °C and 28 °C.
When the last sample has been poured into this collecting vessel, gently heat the contents to the pouring temperature (80 °C to 90 °C above the expected ring and ball softening point) and thoroughly mix with the thermometer (4.4). When thoroughly mixed, pour the contents immediately into the vessels and moulds required for subsequent tests.
Measure the characteristics of the hardened binder as described in 6.3.
6.2 Test without the determination of change in mass
Carry out the procedure described in 6.1, but without determining the mass of the sample.
After the sample has been submitted to the hardening test, bring the contents of the flask to the pouring temperature (see 6.1), and fill the vessels and moulds necessary for subsequent tests.
If two or more samples are required, carry out the procedure as described in 6.1.
Measure the characteristics of the hardened binder as described in 6.3.
6.3 Measurement of binder characteristics after hardening of the binder
Measure the characteristics of the hardened binder within the permitted delay (see 6.1) in accordance with the various methods of tests. Avoid reheating of the samples. P2 is the penetration at 25 °C, 7’2 is the softening point ring and ball and q is the dynamic viscosity at 60 DC, of the hardened binder.
7 Calculation
Calculate the percentage of change in mass of the sample for procedure 6.1 as follows:BS EN 12607-3-2000 pdf download.

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