16 research outputs found
Technical stuides on asphalt report no. 1 - spectral analyses of hot recycling agents (83-02-2)
This report contains standardized baseline dat a for a series of
Hot Recycling Agents and AC-3 asphalt. The hot recycling agents are
identified by their RA number (RA-6, RA-25, RA-100 and RA-275) where
the RA number is defined as the average viscosity of the sample at
140°F divided by 100. The recycling agents and the AC-3 have been
characterized by solubility measurements to determine maltene, resin,
and oil contents which have been compared to nuclear magnetic
resonance (1H and 13 c NMR) and infrared (IR) spectral data.
The RA numbers have been found to correlate with the resin/oil
and high affinity/low affinity ratios, C-H stretching intensity
ratios and 13 C-NMR intensity ratios. The data should form a basis for
the identification of recycling agents.N