Rheological modification of bitumen with maleic anhydride and dicarboxylic acids

Herrington, P R; Wu, Yinqui; Forbes, Murray C.

doi:10.1016/s0016-2361(98)00120-3

Cited by 50 publications

(36 citation statements)

References 15 publications

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“…In recent years, bitumen acid modification was rediscovered because it turned out to start to make economical sense and seemed to lack the fragility problem of air-blown bitumens [156,245]. In particular, polyphosphoric acid (PPA) modification is currently gaining industrial importance since it permits to significantly harden bitumen in an easily controllable way.…”

Section: Acid Modificationmentioning

confidence: 99%

The colloidal structure of bitumen: Consequences on the rheology and on the mechanisms of bitumen modification

Lesueur¹

2009

Advances in Colloid and Interface Science

1,323

710

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Section: Acid Modificationmentioning

confidence: 99%

The colloidal structure of bitumen: Consequences on the rheology and on the mechanisms of bitumen modification

Lesueur¹

2009

Advances in Colloid and Interface Science

1,323

710

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“…In the first case, the reactions occurring with asphalt are not easily identifiable. A first hypothesis is that the MAH double bonds lead to the formation of a copolymer in which MAH alternates with various asphalt components [250]. However, Diels-Alder reactions between MAH and the complex aromatic ring of coal [251,252] and mesophase pitches [250] have also been observed.…”

Section: The Use Of Maleic Anhydridementioning

confidence: 99%

“…A first hypothesis is that the MAH double bonds lead to the formation of a copolymer in which MAH alternates with various asphalt components [250]. However, Diels-Alder reactions between MAH and the complex aromatic ring of coal [251,252] and mesophase pitches [250] have also been observed. Nevertheless, irrespective of the exact mechanism of interaction, it is well known that MAH induces significant changes in the physical properties of asphalt.…”

Section: The Use Of Maleic Anhydridementioning

confidence: 99%

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

524

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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“…However, the poor compatibility between epoxy resin and asphalt may lead to phase separation. The modification of the commonly used petroleum-based asphalt with maleic anhydride (MAH) 38 has been applied to prepare epoxyasphalt composites. Herrington 39 revealed that the modified asphalt (MA) can improve the compatibility of epoxy resin and asphalt.…”

Section: Introduction Ementioning

confidence: 99%

Aliphatic Diamide as Novel Asphalt‐Modified Epoxy Curing Agent for Enhanced Performance

Jiang

Liu

et al. 2016

Adv Polym Technol

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Adipamide used as the curing agent of asphalt-modified epoxy resin was synthesized by esterification and ammonolysis, and its chemical structure was confirmed by the Fourier transform infrared spectroscopy (FTIR), 1 H and 13 C nuclear magnetic resonance ( 1 H NMR and 13 C NMR) analysis. The thermal stability, Vicat softening temperature, tensile strength, and Shore D hardness of the cured asphalt-modified epoxy resin were studied by thermogravimetric analysis (TG), Vicat softening tester, tensile tests, and Shore D plastic hardness tester, respectively. The surface morphology of epoxy resin tensile fracture was also observed by scanning electron microscopy (SEM). The Vicat softening temperature of cured epoxy resin decreased from 95 to 64°C with increasing modified asphalt (MA) contents from 0 wt.% to 25 wt.%. The maximum tensile strength of cured epoxy resin reached 45.4 MPa when MA content was 5 wt.% of the whole resin. The Shore D hardness slightly decreased from 86 D to 79 D as the MA was enhanced from 0 wt.% to 25 wt.%. TG results displayed that the thermostable temperature of cured epoxy resin was higher than 280°C.

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Rheological modification of bitumen with maleic anhydride and dicarboxylic acids

Cited by 50 publications

References 15 publications

The colloidal structure of bitumen: Consequences on the rheology and on the mechanisms of bitumen modification

The colloidal structure of bitumen: Consequences on the rheology and on the mechanisms of bitumen modification

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

Aliphatic Diamide as Novel Asphalt‐Modified Epoxy Curing Agent for Enhanced Performance

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