The worldwide global demand for oil has grown by 150% since 1965 and 20% in the past 20 years to the current 80 million barrels per day, and is projected to grow by 50% more in the next 20 years [1]. The growth in global demand for oil comes at a time when the supply from relatively cheap conventional sources is declining, and reserves are not being replaced with new discoveries [2]. However, t...

Road pavement workers are exposed to many known carcinogens in their complex occupational environment. The study makes an attempt to investigate exposure to polycyclic aromatic hydrocarbons (PAH) from the bitumen fumes among the road pavement workers engaged in different pavement sites at Coimbatore, Tamil Nadu and to thereby determine the genotoxic effects associated with it. The study include...

Energy-saving additives used in the Uzbekistan road construction practice are considered. Based on experimental data, influence of considered energy-saving standard, adhesive and rheological properties petroleum viscous bitumen has been established.

This paper deals with the fundamental differences between industrial and paving-grade bituminous binders. The is presented in two main sections: 1) a review of materials’ colloidal structure required properties for paving applications; 2) wide range experimental tests which binders were studied compared. In this research, 160/220 bitumen was compared to same penetration lower penetration, 70/10...

BACKGROUND Polycyclic aromatic hydrocarbons (PAHs) are the main toxic compounds in natural bitumen, a fossil material used by modern and ancient societies around the world. The adverse health effects of PAHs on modern humans are well established, but their health impacts on past populations are unclear. It has previously been suggested that a prehistoric health decline among the native people l...

Transportation infrastructure relies heavily on asphalt pavement, but conventional bitumen-based mixtures present several drawbacks. This study assesses the potential of poly(methyl methacrylate) resins and thixotropic fillers as substitutes for bitumen to improve pavement performance. The research concentrates enhancing current formulations that incorporate a thermosetting polymer mineral (sti...

Observing the microstructure of bituminous binders with an environmental scanning electron microscope (ESEM) can contribute significantly to reveal underlying rejuvenation mechanism. In this study, three rejuvenators were selected regenerate aged SBS modified at five dosages, and their rheology was evaluated using a dynamic shear rheometer. ESEM employed examine as well, series parameters quant...

Crumb rubber (CR) derived from grinding of end-of-life tyres (ELTs) may be successfully used as a bitumen modifier or as a supplementary component in the production of bituminous mixtures employed for the construction and maintenance of road pavements. However, CRs deriving from different sources and production processes yield effects on performance of corresponding paving mixtures under traffi...

Palm oil clinker (POC) is a non-biodegradable palm mill by-product typically discarded in dumpsites. This study analyzed the performance of POC powder (POCF) as bitumen modifier terms conventional and engineering properties asphalt mixture. For study, base 60/70 penetration grade was utilized different POCF dosages (0, 2, 4, 6, 8% by weight bitumen) were added. The effectively modified with the...