AASHTO TP 114-16 Download


Provisional Standard Method of Test for Determining the Interlayer Shear Strength (ISS) of Asphalt Pavement Layers
standard by American Association of State and Highway Transportation Officials, 2016



This test method covers the determination of the interlayer shear strength of asphalt pavement layers using laboratory-prepared samples or core samples.

This test can be performed on 150-mm (6-in.) or 100-mm (4-in.) diameter specimens of asphalt pavement.

This test is applicable if the asphalt overlay layer and the base layer are both 50 ± 5 mm (2.0 ± 0.2 in.) thick. The total specimen thickness must not exceed 150 mm (6 in.). Layers may be saw cut to the recommended layer thickness.

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