Results 111 to 120 of about 191 (150)
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Chemical and rheological characteristics of rejuvenated bitumen with typical rejuvenators
Construction and Building Materials, 2021Abstract In recent years, reclaimed asphalt pavement (RAP) is widely used in pavement construction because of its merits on both economic and environmental aspects. The use of RAP contributes to significant reduction on resource consumption, construction emission and the overall construction costs.
Wentong Huang +7 more
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Bitumen rheology and the impact of rejuvenators
Construction and Building Materials, 2019Abstract Bitumen is a material used in many industrial applications. It is the primary binding material for road pavements in asphalt. To improve sustainability, it is important to be aware of the finite nature of conventional oil reserves. As a cost and energy saving material, reclaimed asphalt pavement can help preserve our resources. Virgin binder
Domenic Ganter +3 more
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Rheological properties of aged bitumen rejuvenated by polymer modified bio-derived rejuvenator
Construction and Building Materials, 2021Abstract In this paper, a polymer modified bio-derived rejuvenator (PMBR) consisting of bio-oil, polymer modifier, and other additives (plasticizer, cross-linking agent) was investigated. The regeneration performance of PMBR on aged base and SBS modified bitumen was compared with that of commercial rejuvenator (CR) and bio-based rejuvenator (BR). The
Tianling Wang +6 more
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Impact of rejuvenators on aging properties of bitumen
Construction and Building Materials, 2015Abstract Potential reductions in construction costs and environmental emissions have made the use of reclaimed asphalt pavement (RAP) as aggregates in hot bituminous mixes an attractive alternative to the highway agencies. Currently, there is a trend towards increasing the RAP content in asphalt pavements and recycle 100% RAP in asphalt mixes ...
Aybike Ongel, Martin Hugener
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Rheological aspects of the rejuvenation of aged bitumen
Rheologica Acta, 2006Rheological techniques are used to investigate the rejuvenation of aged bitumen. The thermal transition associated with the collapse of the compact structure constituted by asphaltene is determined by Dynamic Mechanical Thermal Analysis. For aged bitumen, this transition shifts to a higher temperature but when rejuvenating agents are added, the ...
Ramón Romera +6 more
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Bitumen Rejuvenator Diffusion as Influenced by Ageing
Road Materials and Pavement Design, 2002ABSTRACT This paper describes studies to illuminate the process of mixing old and new binder during asphalt recycling, or, more precisely, mixing by diffusion. FTIR-ATR (Fourier Transform Infrared Spectroscopy by Attenuated Total Reflectance) is used to study effects of the degree of ageing on the diffusion process.
Robert Karlsson, Ulf Isacsson
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On the rejuvenator dosage optimization for aged SBS modified bitumen
Construction and Building Materials, 2021Abstract The rejuvenator dosage in bituminous binders is critical, as it has to be balanced to ensure the restoration of rheological properties without over-softening the recycled binders. In this study, the impact of dosage of different rejuvenators on a polymer modified bitumen was evaluated by conducting rheological tests at low, medium and high ...
Peng Lin +7 more
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Construction and Building Materials, 2020
Abstract Challenges are existing when applying high percentages of reclaimed asphalt pavement (RAP) into construction as the aged RAP binder became more brittle, and stiffer after second-round usage. The bio-rejuvenator with dramatic environmental effects can alleviate stiffness and increases viscous components of aged RAP binder and is becoming ...
Jiangmiao Yu +4 more
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Abstract Challenges are existing when applying high percentages of reclaimed asphalt pavement (RAP) into construction as the aged RAP binder became more brittle, and stiffer after second-round usage. The bio-rejuvenator with dramatic environmental effects can alleviate stiffness and increases viscous components of aged RAP binder and is becoming ...
Jiangmiao Yu +4 more
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Investigating Aging and Rejuvenation Mechanism of Biomodified Rubberized Bitumen
Journal of Materials in Civil Engineering, 2021AbstractThis study examines the effects of five biomodifiers on the aging and rejuvenation of biomodified rubberized bitumen.
Sk Faisal Kabir, Elham H. Fini
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Laboratory evaluation of rejuvenation effect of reactive rejuvenator on aged SBS modified bitumen
Materials and Structures, 2017A reactive rejuvenator (RR) containing epoxy functional groups and a conventional rejuvenator (CR) were used to regenerate the aged SBS modified bitumen (SBSMB). Effects of two kinds of rejuvenators on physical properties, rheological properties, chemical structure and phase morphology of the aged SBSMB were investigated.
Song Xu +4 more
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