Modification of oxidized bitumen with styrene-butadiene-styrene copolymers of various structures

Luksha, O. V.; Опанасенко, О. Н.; Крутько, Н. П.; Loboda, Yu. V.

doi:10.1134/s1070427206060280

Cited by 16 publications

(6 citation statements)

References 1 publication

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“…Surprisingly, to our knowledge, a confirmation or contradiction of this theory has not yet been published; however, highly vinyl SBS grades are gaining in interest among PMA manufacturers. The only paper we found that uses a highly vinyl SBS is the one by Luksha et al [69], which focuses on the mechanical and structural properties of the PMA but unfortunately does not study the storage stability or the existence of chemical bonds within the asphaltenes and polymer.…”

Section: The Vinyl Content In Sbsmentioning

confidence: 97%

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A review of the fundamentals of polymer-modified asphalts: Asphalt/polymer interactions and principles of compatibility

Polacco

Filippi

Merusi

et al. 2015

Advances in Colloid and Interface Science

525

184

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During the last decades, the number of vehicles per citizen as well as the traffic speed and load has dramatically increased. This sudden and somehow unplanned overloading has strongly shortened the life of pavements and increased its cost of maintenance and risks to users. In order to limit the deterioration of road networks, it is necessary to improve the quality and performance of pavements, which was achieved through the addition of a polymer to the bituminous binder. Since their introduction, polymer-modified asphalts have gained in importance during the second half of the twentieth century, and they now play a fundamental role in the field of road paving. With high-temperature and high-shear mixing with asphalt, the polymer incorporates asphalt molecules, thereby forming a swallowed network that involves the entire binder and results in a significant improvement of the viscoelastic properties in comparison with those of the unmodified binder. Such a process encounters the well-known difficulties related to the poor solubility of polymers, which limits the number of macromolecules able to not only form such a structure but also maintain it during high-temperature storage in static conditions, which may be necessary before laying the binder. Therefore, polymer-modified asphalts have been the subject of numerous studies aimed to understand and optimize their structure and storage stability, which gradually attracted polymer scientists into this field that was initially explored by civil engineers. The analytical techniques of polymer science have been applied to polymer-modified asphalts, which resulted in a good understanding of their internal structure. Nevertheless, the complexity and variability of asphalt composition rendered it nearly impossible to generalize the results and univocally predict the properties of a given polymer/asphalt pair. The aim of this paper is to review these aspects of polymer-modified asphalts. Together with a brief description of the specification and techniques proposed to quantify the storage stability, state-of-the-art knowledge about the internal structure and morphology of polymer-modified asphalts is presented. Moreover, the chemical, physical, and processing solutions suggested in the scientific and patent literature to improve storage stability are extensively discussed, with particular attention to an emerging class of asphalt binders in which the technologies of polymer-modified asphalts and polymer nanocomposites are combined. These polymer-modified asphalt nanocomposites have been introduced less than ten years ago and still do not meet the requirements of industrial practice, but they may constitute a solution for both the performance and storage requirements.

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Section: The Vinyl Content In Sbsmentioning

confidence: 97%

“…Many documents indicate that the average MW of resin molecules is not larger than 1100 g/mol and its H/C ratio is higher than that of asphaltene, oscillating between 1.38 and 1. 69. The common point of various authors is that the structure of resins closely resembles those of asphaltenes but with less condensed aromatic rings.…”

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confidence: 96%

A review of the fundamentals of polymer-modified asphalts: Asphalt/polymer interactions and principles of compatibility

Polacco

Filippi

Merusi

et al. 2015

Advances in Colloid and Interface Science

525

184

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“…Later, many researchers repeatedly turned to the problem of modification of bitumens with viscoelastic polymers and dispersed fillers; works [14][15][16][17][18] should be noted among the large number of communications. The contemporary theory and practice relevant to the development of bitumen based materials have been comprehensively described in large monograph [19], in which numerous references devoted to this problem were also presented.…”

Section: Introductionmentioning

confidence: 99%

Rheological properties of road bitumens modified with polymer and solid nanosized additives

et al. 2014

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The study of the viscoelastic properties of composites based on road bitumens have shown that the addition of polymeric modifiers (poly(bytadiene block styrene) or devulcanized rubber particles) substan tially increases the storage and loss moduli and decreases the intensity of reduction in the storage modulus with temperature by several orders of magnitude. However, at high polymer content, growth inadmissible from the point of view of acceptable technological parameters is observed in the apparent viscosity. The intro duction of carbon nanotubes into bitumen does not substantially affect its viscoelastic properties. Filling with meta kaolin promotes an increase in the storage modulus at elevated temperatures. It has been shown that a direct correlation may be established between the objective characteristics of bitumen based composites and standard specification parameters, such as penetration depth and heat resistance.

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“…Consequently, to achieve the desired goal, it was necessary to change the surface properties of the WPF. But this is possible only by dressing the polymer fillers with different organic or heteroorganic compounds (although methods are also known for the activation of fillers by different methods, including surface oxidation of the fibre) [1][2][3]. Available information also indicates that the surface modification of fibres can be carried out using epoxy or organosilicon compounds [4,5].…”

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confidence: 99%

Surface Modification of Waste Polyamide Fibre and Its Use in Bitumen Composites

Shakhnazarli

Ishchenko

Nazaraliev

et al. 2012

International Polymer Science and Technology

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Modification of oxidized bitumen with styrene-butadiene-styrene copolymers of various structures

Cited by 16 publications

References 1 publication

A review of the fundamentals of polymer-modified asphalts: Asphalt/polymer interactions and principles of compatibility

A review of the fundamentals of polymer-modified asphalts: Asphalt/polymer interactions and principles of compatibility

Rheological properties of road bitumens modified with polymer and solid nanosized additives

Surface Modification of Waste Polyamide Fibre and Its Use in Bitumen Composites

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