Laboratory Simulation of Bitumen Aging and Rejuvenation to Mimic Multiple Cycles of Reuse

Timo Blomberg, Michalina Makowska, Terhi Pellinen

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference contributionScientificvertaisarvioitu

3 Sitaatiot (Scopus)
163 Lataukset (Pure)

Abstrakti

A laboratory study on bitumen aging and rejuvenation was conducted to investigate the effect of the multiple cycles of reuse on bitumen properties. The bitumen studied was unmodified conventional paving grade 70/100 pen bitumen which was aged in the laboratory, then rejuvenated with 650/900 bitumen back to 70/100 grade. Four aging-rejuvenation cycles were conducted and properties were tested after each step. The aging procedure consisted of Rolling Thin Film Oven Test (RTFOT) followed by Pressure Aging Vessel (PAV) aging at 90 °C for 20 hours. Results suggest that bitumen hardens the most during the first cycle of aging with the following cycles asserting less influence. The physical bitumen properties could be restored close to the original state. However, the balance of elastic and viscous component was altered towards a more elastic behavior in each cycle. Therefore, it is debatable whether rejuvenation with soft bitumen restores the entire range of performance for the bitumen. The changes cannot be chemically reversed in described process, although the rejuvenator allows for the restoration of some physical properties.
AlkuperäiskieliEnglanti
OtsikkoTransportation Research Procedia
AlaotsikkoTransport Research Arena TRA2016
ToimittajatLeszek Rafalski, Adam Zofka
KustantajaElsevier Ltd.
Sivut694-703
Sivumäärä10
Vuosikerta14
DOI - pysyväislinkit
TilaJulkaistu - 2016
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisuussa
TapahtumaTransport Research Arena: Moving Forward - Stadion Narodowy, Warsaw, Puola
Kesto: 18 huhtikuuta 201621 huhtikuuta 2016
http://www.traconference.eu/
http://www.traconference.eu/

Julkaisusarja

NimiTransportation Research Procedia
KustantajaElsevier
Vuosikerta14
ISSN (elektroninen)2352-1465

Conference

ConferenceTransport Research Arena
LyhennettäTRA
MaaPuola
KaupunkiWarsaw
Ajanjakso18/04/201621/04/2016
www-osoite

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