# Thin-Film Oven

The thin-film oven (TFO) test simulates short-term aging by heating a film of asphalt binder in an oven for 5 hours at 163° C (325° F).

- Canonical URL: https://pavementinteractive.org/reference-desk/testing/binder-tests/thin-film-oven/
- Last updated: 2026-11-01
- Review: reviewed by licensed professional engineers on the previous Pavement Interactive site, where reviewers were not recorded by name
- Standards: AASHTO T 179, ASTM D1754

The thin-film oven (TFO) test simulates short-term aging by heating a film of [asphalt binder](https://pavementinteractive.org/glossary/asphalt-binder/) in an oven for 5 hours at 163° C (325° F). The effects of heat and air are determined from changes incurred in physical properties measured before and after the oven treatment by other test procedures.

## Standard Test Methods

AASHTO T 179 and ASTM D 1754: Effects of Heat and Air on Asphalt Materials (Thin-Film Oven Test)