Standard Test Method for Density of Liquid Asphalts (Hydrometer Method)

This test method covers the determination of the density of cutback asphalts using a glass hydrometer. It is applicable to cutback asphalts which are liquid at room temperature. It provides more explicit testing procedures than those in method ASTM - D1298.

The determination is performed using a hydrometer.

• The hydrometer floats in the sample.
• The depth of immersion depends on the liquid density.
• The scale provides a direct reading of density, relative density, or API gravity.
• The measurement is carried out at a controlled temperature (typically 15°C or 60°F).

Because cutback asphalt contains volatile solvents, careful temperature control is required. As density changes significantly with temperature accurate temperature control is important. The setup offers a TLC15 for accurate temperature control within specifications.

Applications for this method are i.e. quality control of cutback asphalt for road construction, product specification verification, custody transfer and trade control or process monitoring in asphalt production.

The method offers a simple method and is relatively inexpensive. It is suitable for quality control and direct reading is possible.

An overview of the ASTM density methods can be found here Density table

The Tamson ASTM D3142 apparatus is available in the following voltages/frequencies:

• Tamson ASTM D3142 230V/50Hz (P/N: 00T2000)
• Tamson ASTM D3142 230V/60Hz (P/N: 00T2001)
• Tamson ASTM D3142 115V/60Hz (P/N: 00T2002)

See tab "More Information" for the specificationsheet and manual