Abstract
Polymer content in modified asphalt has a great influence on the performances of polymer-modified asphalt (PMA). Quantitative determination of polymer content is essential to quality control and quality assurance (QC and QA, respectively) during the processing and application of PMA. This article is a review of research that has been conducted on the quantitative determination of polymer content in modified asphalt. A general description of four methods, namely performance-based methods, dissolving-separating methods, gel permeation chromatography methods, and infrared spectroscopy methods, is given. Of these methods reviewed, infrared spectroscopy is probably the most appropriate test method to determine several types of polymer (SBR, SBS, and EVA) content in modified asphalt.
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