The ageing of bitumen is an inevitable phenomenon which still challenging to be characterised. This paper aims at evaluating the degrees comprehensively. There were six types being aged five levels for comparing purposes and multiple rheological tests by a DSR as well chemical test SARA (saturates, aromatics, resins asphaltenes) properties carried out. critical temperatures, G-R parameter nonre...

In order to improve the viscoelasticity of bitumen, several modifiers were compounded with it, including SBS, reclaimed rubber powder, tackifier, plasticizer, and oil stabilizer, produce High-viscosity High-elastic Modified Bitumen (HVE-MB). The various physical rheological properties bitumen evaluated using a number factors, such as dynamic viscosity at 60 °C, elastic recovery, penetration, so...

the polymeric and non-polymeric petrochemical wastes are environmentally unfavorable materials. we have to found a way to reuse these wastes in a safe manner. in styrene-butadiene rubber (sbr) production plant two major wastes are produced one is a fine rubber powder and the other is recycled n-methyl pyrrolidone (nmp). in high-density polyethylene (hdpe) production plant also a low molecular w...

The increase use of crumb rubber in flexible pavements requires the better understanding of its effect on physical and rheological properties of rubberised bitumen binders. The performance properties of rubberised bitumen binder are influenced by the blending conditions and crumb rubber content. The main objective of this research is to investigate the effect of various crumb rubber content on ...

Undertaking a chronic inhalation study on bitumen fume presents a challenge in terms of generating sufficient amounts of representative fume. The objective of the study described in this and in previous publications was to collect sufficient fume and use this to develop a laboratory-generated exposure atmosphere, for use in chronic inhalation toxicity studies in rats that resembles, as closely ...

Bitumen is a commonly used material for road construction. According to environmental regulations, vegetable-based materials are applied for binder modification. Fluxed road bitumen containing a bio-flux oxidation product increases the consistency over time. The efficiency of crosslinking depends on the number of double bonds and their position in the aliphatic chain of fatty acid. The main goa...

In this study, the recycled PET is used in bitumen modification by applying a different process order to eliminate phase separation problem. For purpose, modified bitumens are obtained adding triethanolamine (TEOA) chemical (wt. 2.5 %) and 2, 4, 6, 8, 10 pure bitumen. The properties of determined chemical, physical, rheological tests. According test results, reacts with PET, 6 % ratio critical ...

As an environmentally friendly alternative for the production of high-performance modified asphalt by chemical reactions, a liquid-state polyurethane-precursor-based reactive modifier (PRM) was developed and employed in modification. In contrast to traditional solid bitumen modifier, example, rubber thermoplastic elastomers, PRM as liquid has more significant advantages reducing energy consumpt...

Waste polymers are widely used in asphalt modification, especially, order to reduce their detrimental effect on the environment. This study discusses usability of waste expanded polystyrene (EPS) foam modification. In this respect, EPS foam, which produces both production and use stages, was mixed with bitumen by weight at ratios 2%, 4%, 6%, 8%, dry modification method employed. The penetration...

The effectiveness of weight ratio mineral filler to effective bitumen in the fatigue performance asphalt mixture with integral granules was investigated based on experiments mastic (mixture and passed through sieve grade 200). included a dynamic shear rheometer, elastic recovery, linear amplitude sweep tests other mixture, such as indirect tensile resilient modulus test for assessing medium tem...