Evaluating Applications of Field Spectroscopy Devices to Fingerprint Commonly Used Construction Materials (Phase IV–Implementation) (2014) / Chapter Skim
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Standard Practice for Evaluation of Oxidation Level of Asphalt Mixtures by Attenuated Total/Diffused Reflection Infrared Spectrometer AASHTO Designation SP XX-14 1. SCOPE 1.1 This method covers the semi-quantitative evaluation of the oxidation level in an asphalt mixture by measuring its carbonyl content.
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5.2 A reliable source of electric power (AC or DC) should be provided to ensure no interference with the spectrometer signal.
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value for the given spectrum (Amin) from each reported intensity and dividing the result by difference between A2920 and Amin, as in Equation [1]
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9. PRECISION 9.1 The coefficient of variation (C.O.V.)
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