Kinematic Viscosity

The kinematic viscosity of a liquid is the absolute (or dynamic) viscosity divided by the density of the liquid...
Superpave Shear Tester

Overview The Superpave Shear Tester (SST) (Figure 1) is used to characterize a HMA mixture's resistance to permanent deformation...
Absolute Viscosity

Viscosity is simply a measure of a fluid’s resistance to flow and is described by the following equation: Asphalt...
HMA Performance Tests

Performance tests are used to relate laboratory mix design to actual field performance. The Hveem (stabilometer) and Marshall (stability...
Mixture Characterization Tests

Mixture characterization tests are used to describe fundamental mixture parameters such as density and asphalt binder content. The three...
Flash Point

A typical flash point test involves heating a small sample of asphalt binder in a test cup. The temperature...
Asphalt Mixture Performance Test

Overview The asphalt mixture performance tester (AMPT) is the companion performance test for use with the Superpave mix design...
Binder Content

Overview Asphalt binder content affects HMA mixture performance in the areas of stiffness, strength, durability, fatigue life, raveling, rutting...
Bulk Specific Gravity

Overview The bulk specific gravity test is used to determine the specific gravity of a compacted HMA sample by...
Laboratory Wheel Tracking Devices

Overview Laboratory wheel-tracking devices (Figure 1) are used to run simulative tests that measure HMA qualities by rolling a...
Moisture Susceptibility

Moisture susceptibility is a primary cause of distress in HMA pavements. HMA should not degrade substantially from moisture penetration...
Theoretical Maximum Specific Gravity

Overview The theoretical maximum specific gravity (Gmm) of a HMA mixture is the specific gravity excluding air voids. Thus,...