16 research outputs found

    Technical stuides on asphalt report no. 1 - spectral analyses of hot recycling agents (83-02-2)

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    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

    Synthesis of silylcyclopentadiene

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