doi:

DOI: 10.3724/SP.J.1249.2018.02146

Journal of Shenzhen University Science and Engineering (深圳大学学报理工版) 2018/35:2 PP.146-150

Comparative analysis of performance of colored asphalt based on the partition of FT-IR graph


Abstract:
Characteristics of peak shape for CA70/CA90 colored asphalt and A70/A90 road petroleum asphalt before and after short-term aging are compared in order to study the structure characteristics and pavement performance of colored bituminous. The conventional performance indicators, composition and functional groups changing of asphalt are analyzed. The results show that functional groups of colored asphalt and road asphalt are mainly concentrated in two areas, feature area (1 160~3 100 cm-1) and fingerprint area (650~1 160 cm-1). Peak shape of colored asphalt feature area keeps pace with that of the petroleum asphalt. Nevertheless, their fingerprint shapes are different. Asphalt infrared transmittance increases to a certain extent after short-term aging, the penetration and ductility values decrease. Changing of fingerprint area associates with the disintegration of composition and performance of asphalt.

Key words:road engineering,colored asphalt,petroleum asphalt,fingerprint region,Fourier transform infrared spectroscopy,structural characteristics

ReleaseDate:2018-03-20 15:26:57



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