Naslov
Evaluation Of Ageing Properties Of Polymer Modified Bitumen

Autori
Rek, Vesna ; Vranješ, Nina ; Barjaktarović, Zrinka M.

Izvornik
Materials Research Innovations (1432-8917) 9 (2005), 4; 670-691

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Bitumen; BIT-SBS-Polymer modified bitumen; PMB – Thermooxidative ageing – PMB dispersions - PMB solids - Evaluation of aged PMB - Rheological properties - Chemical structure

Sažetak
Polymers are the most common modifiers currently being used to improve bitumen, BIT, viscoelastic properties. The polymers increase the temperature range over which a binder resists both rutting and thermal cracking as well as lengthening the time before fatigue failure. In this paper SBS block copolymer is used as the polymer modifier. The ageing properties of polymer modified bitumen, PMB, have the main role in quality of PMB dispersions and solid PMB. In road applications, BIT and PMB dispersions are exposed to thermooxidative ageing in production of PMB dispersions, during their storage, mixing and transporting. The thermooxidative processes in PMB dispersions affect the quality and ageing processes of solid PMB in their service life. For this reason, it is very important to determine the intensity of thermooxidative degradation of pure component as well as PMB dispersions. In this paper the bitumen and BIT/SBS blends are aged by means of the Rolling Thin Film Oven Test, RTFOT, at a temperature of 163 oC in the presence of oxygen.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA