1. Influence of polymer particles dispersion on selected bitumen properties.
- Author
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Mazurek, Grzegorz, Podsiadło, Marcin, and Bąk-Patyna, Paulina
- Subjects
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BITUMEN , *PAVEMENTS , *DISPERSION (Chemistry) - Abstract
In recent years, the increased in traffic load has led to more frequent use of polymer-modified bitumens in road surfaces. The available bitumen are usually modified with a styrene-butadiene-styrene copolymer. Such bitumens are characterized by a number of favorable parameters compared to traditional road bitumens. However, in order to protect the environment, there is a need for looking for a new types of polymers from different sources. A good solution could be a utilizing some plastomers available on the market. The article compares the microstructure of two bitumens such as: PMB 45/80-55 and PMB 45/80-65 with processed plastomer modified bitumens. The basic properties of polymer modified bitumens, such as: softening point, penetration, and Fraass breaking point were discussed. The bitumen microstructure was analyzed. In article a changes in particles distribution surface was investigated. For this purposes the epifluorescence microscope observations were carried out. The very important part of studies was performing qualitative analysis using statistical methods. On the basis of obtained statistical inferring was found that particle distribution od plastomer modified bitumens was similar to SBS modified bitumen. Ins cases the level od homogeneity of plastomer modified bitumens bas better than in case SBS usage. Considering set of samples it was worth to note that the increase in particles area brought about a little drop in viscosity at 135deg.C. The bigger particles decreased Fraass temperature and increased bitumen penetration grade. However in case of softening point temperature the particles size had a marginal influence. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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