Q
when was the rolling thin film oven test implemented
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The Rolling Thin Film Oven Test (RTFOT), a standard method used to measure the effect of heat and air on a thin film of asphalt binder, was first introduced by the American Society for Testing and Materials (ASTM) in 1982 as ASTM D2872. This test simulates short-term aging by heating a thin film of asphalt binder in an oven at 163 °C for 85 minutes, while the sample is exposed to a flow of air. It aims to predict the performance of asphalt binder in the early stages of pavement life, helping in the formulation of asphalt that can resist changes due to heat and oxygen exposure. The implementation of the RTFOT has been crucial for the development of more durable road surfaces by allowing engineers to assess the aging characteristics of asphalt binders before they are used in the field.
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