The breaking and coalescence process in bitumen emulsions during their application strongly influences the resulting long-term mechanical performance of the cold mix asphalt. This phase separation process is affected by physico-chemical changes at the bitumen/water interface. This paper describes the effects of addition of different salts on the destabilization of bitumen emulsions. This study ...

The addition of polymer to a base binder has been documented as successful approach in terms improving physical and rheological properties the bitumen. However, main drawbacks polymer-modified bitumen are incompatibility degradation due aging. This article aims introduce bibliometric analysis review on modifying with polymers. Additionally, this intent highlight significant gaps recommendations...

Polymers have been widely used to improve the performance of bitumen. Polypropylene (PP), one most common plastomer for bitumen modification, is utilized specially in roofing application adding up 30 wt% This article presents an investigation four different polypropylene (PP) polymers having differences tacticity (atactic and isotactic), molecular weight (Mw ~ 12 000 g/mol ~250 g/mol) functiona...

Asphalt modification/reinforcement has received considerable attention as viable solutions to enhance flexible pavement performance. This is mainly prompted by the unsatisfactory performance of traditional road materials exposed to dramatic increases and changes in traffic patterns. This paper presents the evaluation of fatigue behaviour of nano reinforced Stone Mastic Asphalt mixtures. Fatigue...

Oil sands are surface exposed in river valley outcrops in northeastern Alberta, where flat slabs (tablets) of weathered, bitumen-saturated sandstone can be retrieved from outcrop cliffs or from riverbeds. Although the average yearly surface temperature of this region is low (0.7°C), we found that the temperatures of the exposed surfaces of outcrop cliffs reached 55 to 60°C on sunny summer days,...

This investigation is focused on the conversion of waste plastic into modified pavement interlock block (Bitumen: quarry dust: coarse aggregate: rice straw ash: plastic:: 5% by weight aggregate mix : 1:2:2% 8% Bitumen) for Mathura Vrindavan city. The aim this work to reduce rapid accumulation at religious places/ tourist spot throwing PET bottles in With application these experimental results, ...

Bitumen in asphalt pavements reacts slowly with atmospheric oxygen, resulting oxidative ageing. This reaction is strongly dependent on the physical diffusion of oxygen into bitumen. study aims to use molecular dynamics (MD) simulation investigate bitumen film and analyse effects anti-ageing compounds (AACs) diffusion. The MD simulations using a Polymer Consistent Force Field (PCFF) were conduct...

Bituminous mix design is a delicate balancing act among the proportions of various aggregate sizes and bitumen content. For a given aggregate gradation, the optimum bitumen content is estimated by satisfying a number of mix design parameters. This article briefly discusses the current approaches in bituminous mix design and singles out the issues involved.

this study investigates removing ash and pyrite sulphur from bitumen by column flotation process. central composite design (ccd) of response surface methodology (rsm) was applied for modeling and optimization of the percentage of ash and pyrite sulphur removal from bitumen. the effects of five parameters namely the amounts of collector and frother agents, particle size, wash water rate and feed...

This study investigated the impact of using modified bitumen binders and additives to enhance physical characteristics asphalt mixtures at high, medium, low temperatures. Both basic rheological bituminous were tested by adding Styrene-Butadiene-Styrene, a type thermoplastic elastomer, as chemical additive various fractions (3.5%, 4%, 4.5%), two kinds Bitumen: Kraton styrene block copolymers Eur...