Test Methods and Specifications

This Test Method is used to assess the reduction of moisture content (dry-back) of the uppermost layer of granular pavement materials prior to the application of bituminous surfacing.

Granular pavement materials include crushed rock, or gravel, sand and soft or ripped rock used as base course. These materials are treated during the preparation of granular pavements for bituminous surfacing.

The test applies to materials assigned an optimum moisture content (OMC) in accordance with AS 1289.5.4.2, with OMC determined using modified compactive effort in accordance with AS 1289.5.2.1.

This test method is also available as a Word document.