Abstract
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.
Highlights
There are many examples in the world around us, when representatives of different species of animals, plants, substances live, contact and are forced to interact with each other for various reasons
The purpose of the first part of the experiment was to study the quality of commercial polymer modified binders (PMB) coming from the manufacturer to the factory of the consumer and get an answer whether all the binders are the same or are there any tricks to modify bitumen
The most important factor in the preparation of quality and durability of both PMB and asphalt concrete in the coating of roads based on it is the compatibility of bitumen with the polymer used
Summary
There are many examples in the world around us, when representatives of different species of animals, plants, substances live, contact and are forced to interact with each other for various reasons. The symbiosis of bitumen, polymer and, if necessary, additional components, which currently has a high-profile name: “4th generation bitumen products – polymer modified binders capable of simultaneously providing the necessary temperature crack resistance, high corrosion resistance, heat resistance, shear resistance, and the long-term durability of pavements [1]” is quite controversial. This is evidenced by an extensive selection on the preparation, use of PMB, as well as the destructive processes to which it is subject [4, 11, 12].
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