Naslov
TERMOXIDATIVE AGING OF POLYMER MODIFIED BITUMEN

Autori
Ocelić Bulatović, Vesna ; Rek, Vesna ; Jurkaš Marković, Kristina

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
15th Ružička days "Today science-tommorow industry", Book of abstracts / Šubarić, Drago - Osijek : Grafika Osijek, 2014, 53-53

ISBN
978-953-6894-52-9

Skup
15th Ružička days "Today science-tommorow industry"

Mjesto i datum
Vukovar, Hrvatska, 11.09.2014. - 12.09.2014

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
polymer modified bitumen; termoxidative aging; FTIR; DSC; DSR

Sažetak
Bitumen aging resulting in hardening of bitumens and embrittlement, both in application and in service, contributes greatly to the deterioration of paving application. Aging is a very complex process of bitumen ; BIT and the complexity increase when polymers are involved in polymer modified bitumens, PmBs. This paper presents an investigation of termooxidative aging of PmB prepared from bitumen and five active and inactive polymers. Aging of the PmBs was performed using the Rolling Thin Film Oven Test, RTFOT. The PmBs were characterized by means of Fourier Transform Infrared Spectroscopy, FTIR, differencial scanning calorimetry, DSC, and dynamic shear rheometry, DSR. It was found that the effect of aging on the chemistry and rheology of the PmB was influenced by the bitumen and was strongly dependent on the characteristics of the polymer. The rheological changes of styrene- butadiene- styrene, SBS, modified bitumens, were attributed to polymer degradation and bitumen oxidation with the aging. In the case of ethylene vinyl acetate, EVA, modified bitumens'changes after aging were mainly due to the oxidative hardening of the bitumen and the degradation of crystal region in the EVA PmBs. However, they have been proven to be very stable for active polymers under aging due to the formation of chemical bonds.

Izvorni jezik
Engleski

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