| Autor: |
Emelyanycheva, Elena, Bashkirceva, Natalya, Akhmetzanova, Ruzilya |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2023, Vol. 2784 Issue 1, p1-8, 8p |
| Abstrakt: |
Modified bituminous binders are multicomponent mixtures, whose properties depend on the concentration of their components. The use of mathematical methods in the development of modified bituminous binders makes it possible to establish quantitative relationships between the content of components in the binder and its properties, as well as to obtain compositions with desired properties. In the work, the method of experimental-mathematical design based on Sheffe's simplex-lattice plans has been used for the development of the compositions of modified road bituminous binders with the required operation interval. As an initial material for modification, petroleum road bitumen grade 100/130 has been taken. Modified bituminous binders contain 95 wt.% of bitumen and 5 wt.% of three types of additives in a total: crumb rubber, oil sludge combined with polyethylene production waste, and a block copolymer based on styrene and butadiene. Since the performance interval of a bituminous binder is determined by the softening and breaking points, mathematical models that describe the quantitative dependences of these two characteristics of the bituminous binders on their composition have been developed, the concentrations of the additives that can provide the required high and low temperature resistance for a binder have been determined. The resulting mathematical models have been analyzed for adequacy, and it has been revealed that they can be used to design the compositions of road bituminous binders modified with the studied additives and to predict with their required operation interval depending on the concentration of the added modifiers. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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