Thin-layer chromatography/flame ionization detection (TLC/FID) allows for the fractionation of bitumen into four fractions, namely, the saturates, the aromatics, the resins A and the resins B (SARAB). The technique is rapid and economical, but it lack reproducibility. The effect of chromarod aging on reproducibility was investigated along with that of the time between bitumen dissolution and it...

BACKGROUND Worker's exposure to bitumen fumes, via inhalation and skin contamination, is related to adverse effects including an increased risk of lung, stomach and non-melanoma skin cancers and leukaemia. The two major mechanisms regulating apoptosis include the mitochondria-mediated intrinsic pathway and the extrinsic pathway induced by death signalling ligands. In a previous study, we showed...

The article provides information on the physical and mechanical properties of polymer-bitumen compositions obtained by modifying road bitumen BND 50/70 with elastomers SKEPT-60 SKN-26 determination composites. composite samples various concentrations (2.5, 3.0, 5.0%, 6.5 7.0%) were determined: needle depth, softening, brittleness flash point, stretching adhesion. It was determined that characte...

The aim of the work is to develop a polymer-bitumen insulating composition based on petroleum bitumen and secondary products chemical industry. Investigated physical properties product production polypropylene, adsorbent oil gas industry, powder crushed tires. It has been established, technology their introduction into compositions influence technological physical-mechanical investigated, optim...

Some substances are familiar only to those who work in certain industries. Bitumen is something that we have all seen applied in road repair, and we may be aware of less obvious uses. Studies on it are frequently reported in this journal, often with emphasis on polyaromatic hydrocarbon exposure (e.g. Burstyn et al., 2002; McClean et al., 2004a,b; Väänänen et al., 2005). In June 2006, bitumen is...

The aim of this study was to investigate the effects different anti-ageing compounds (AACs) on oxidative stability, rheological and mechanical properties bitumen. Modified bitumen samples containing six AAC combinations, with five Irganox acid (3,5-di-tert-butyl-4-hydoxyphenylpropionic acid), a hindered phenol polymer-based antioxidant, were fabricated aged under conditions using Rolling Thin F...