An introduction to key tests used to determine the viscosity and other properties of asphalt binder. Test results can indicate the suitability of a binder grade for a particular asphalt paving mixture.
The asphalt content and gradation test can be used for HMA quality control, acceptance testing or forensic analysis. The three major test methods, solvent extraction, nuclear asphalt content gauge and ignition furnace are discussed here. Each method offers a way to determine asphalt content and aggregate gradation from an HMA sample. Solvent Extraction Solvent extraction, … Read more
The thin-film oven (TFO) test simulates short-term aging by heating a film of asphalt binder in an oven for 5 hours at 163° C (325° F). The effects of heat and air are determined from changes incurred in physical properties measured before and after the oven treatment by other test procedures. Standard Test Methods AASHTO … Read more