Bitumen performance and chemistry in solvent refined bitumen blends

Holleran, G; Holleran, Irina; Wilson, Donald W.

doi:10.1088/1757-899x/236/1/012009

Cited by 4 publications

(2 citation statements)

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“…Let's consider the "polymer -plasticizer" system for the most characteristic plasticizers under a microscope, Figure 2-4. The distribution, extent, and homogeneity of various phases in sistems largely depend on various factors, including plasticizer [10][11][12][13][14][15][16]. The recorded difference in the systems is obvious.…”

Section: Resultsmentioning

confidence: 99%

Use of plasticizers in the production of PMB, as a tool for creating effective binders

et al. 2020

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Currently, the use of an appropriate type of binder suitable for specific climate conditions has become an important area for ensuring the operational reliability of asphalt concrete coatings. However, it is worth noting that the required set of PMB properties depends not only on the percentage of the polymer, but also on the type of plasticizer used. The results of comparative tests of polymer-bitumen binders prepared using 6 different plasticizing additives are presented. The dependence of changes in the parameters of modified binders, as well as their thermal stability, is studied. Based on the analysis of generalized efficiency criteria, a Comprehensive assessment of the effect of the plasticizer on the properties of the final product – PMB-was performed. The result demonstrates the need to use plasticizing components to achieve the required properties of the modified binder. Recommendations are given to maintain the required level of physical and mechanical parameters of PMB.

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Section: Resultsmentioning

confidence: 99%

Use of plasticizers in the production of PMB, as a tool for creating effective binders

et al. 2020

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“…It is generally accepted [13,14,15] that for PMB the presence of a polymer mesh in the structure is a desirable condition, and, according to some researchers, a necessary condition. It should be noted that during the study, this mesh was recorded only in sample No.…”

Section: The Influence Of Pmb Morphology On Its Physical and Mechanicmentioning

confidence: 99%

PMB quality problems based on its morphology and used equipment

et al. 2019

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In the first part of the study, a direct relationship is established between the influence of the morphology of PMB (polymer modified binder) on the totality of its consumer properties and its tendency to destruction. The second part of the study is devoted to the influence of technological equipment used for the production of polymer modified binder on its properties. It was experimentally established that having the same initial components, PMB of completely different quality were obtained at the output. According to the degree of increase in rigidity (penetration value at 25 °C), obtained PMBs can be conditionally positioned as follows: prepared using a paddle mixer, a colloid mill, and an extruder. It is proved that the high elastic properties of PMB can be achieved by using paddle mixers that do not damage the long polymer macromolecules during the process. However, such binders are prone to delamination. To eliminate this negative aspect, the use of additional crosslinking agents is necessary. PMB prepared using an extruder has lost its elastic abilities, has become tough, with a high rate of cohesive strength. Thus, it is noted that when designing PMB compositions, it is necessary to carefully choose not only the raw material base but also the technological equipment for its preparation.

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