In this research the influence of ultraviolet radiation on short- and long-term aged bitumens has been studied, combining the SHRP tests (RTFOT, PAV) by means of a new UV standardized aging procedure. Thanks to this study it has been possible to quantify the influence of photochemical processes on rheological parameters of bitumens, and to value their percentage of incidence on the total long term aging evaluated by PAV. In particular it has been verified that the said incidence doesn’t seem to be costant, but rather dipending on the nature of the asphalt binder; for these reasons the effect of the UV radiation by itself, which is a real contributing term in the in situ aging process, can’t be simulated by means of the standard oxidative-thermic treatments carried-out in laboratory.

The ultraviolet radiation in short- and long-term aging of bitumen

CERNI, Gianluca
2000

Abstract

In this research the influence of ultraviolet radiation on short- and long-term aged bitumens has been studied, combining the SHRP tests (RTFOT, PAV) by means of a new UV standardized aging procedure. Thanks to this study it has been possible to quantify the influence of photochemical processes on rheological parameters of bitumens, and to value their percentage of incidence on the total long term aging evaluated by PAV. In particular it has been verified that the said incidence doesn’t seem to be costant, but rather dipending on the nature of the asphalt binder; for these reasons the effect of the UV radiation by itself, which is a real contributing term in the in situ aging process, can’t be simulated by means of the standard oxidative-thermic treatments carried-out in laboratory.
2000
90-802884-3-8
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11391/11901
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