Traditional chromatographic separations take days and require large amounts of sample and solvent. Combining the Asphaltene Determinator™ (AD) and SAR (saturates, aromatics, and resins) separation provides access to a petroleum product “fingerprint” in less than 2 hours with only milligrams of sample. This new tool provides a way to determine aging, processing and blending guidelines. The patented SAR-AD™ works for paving and roofing asphalt binders, crude oils, aged pavement or shingle binders, blends with additives, and coal fractions. SAR-AD™ is described in FHWA-HRT-15-055.
Asphalt composition “black box” unveiled
Separation of the asphalt continuum into relevant pieces.
Asphalt Composition Fingerprinting Different Materials
Asphalt and Crude Oil Fingerprinting Implications
Asphaltene Determinator portion of (SAR-AD)