Public test guide

Recovery of binder from asphalt

Separates bituminous binder from an asphalt mixture so the recovered material can be tested.

Plain-language explanation

What the test tells you.

The project specification controls the exact method and acceptance requirement.

Binder is extracted from the aggregate and the solvent is removed under controlled conditions intended to limit further ageing.

Asphalt sample, approved solvent/extraction equipment and controlled binder-recovery apparatus.

It produces a recovered binder specimen; penetration, softening point or other properties are tested separately.

Supports investigation of the binder actually present in produced or in-service asphalt.

Typical test sequence

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