Investigation of Laboratory and Field Aging of Bituminous Concrete with and without Anti-aging Additives using FESEM and FTIR

It is a well-known fact that aging of bituminous binder induces physical, chemical and morphological transformations. During the current investigations, an attempt was made to monitor the aging phenomenon of VG 30 grade bituminous binder through penetration index, sulfoxide index, carbonyl index, FTIR and FESEM studies. Bituminous concrete samples, prepared in line with field specifications, were artificially aged with oven (as per AASHTO R30). Further, the extracted samples were investigated for understanding the transformations taking place with aging. Attempts were also being made to investigate the influence of warm mix additive i.e., Sasobit and hydrated lime on aging process. Bitumen extracted from field aged samples was also tested and the performance was compared with that of the lab aged samples for assessing the level of match between the laboratory and field aging processes. It was established through the tests and indices developed during the study that the addition of Sasobit (warm mix additive) and hydrated lime has improved the resistance towards aging of VG 30 bituminous binders.

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  • English

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  • Accession Number: 01714162
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 24 2019 3:06PM