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TitleAsphalt surface mixtures with improved performance using waste polymers via dry and wet processes
Author(s)Ranieri, Mauro
Costa, Liliana
Oliveira, Joel
Silva, Hugo Manuel Ribeiro Dias da
Celauro, Clara
KeywordsAsphalt modification
Wet process
Dry process
Waste polymers
Mixture performance
Issue date2017
PublisherAmerican Society of Civil Engineers (ASCE)
JournalJournal of Materials in Civil Engineering
CitationRanieri M., Costa L., Oliveira J. R. M., Silva H. M. R. D., Celauro C. Asphalt Surface Mixtures with Improved Performance Using Waste Polymers via Dry and Wet Processes, Journal of Materials in Civil Engineering, Vol. 29, Issue 10, doi:10.1061/(ASCE)MT.1943-5533.0002022, 2017
Abstract(s)The mechanical performance of a typical surface course mixture, modified with two different plastic wastes, both via the wet and dry processes, was evaluated in this study. Water sensitivity, rutting resistance, stiffness modulus, and fatigue cracking resistance tests were used. The results obtained indicated that the polymer-modified mixtures showed similar or improved performance when compared with that of a conventional control mixture produced with a harder virgin grade bitumen, not always available, or available at higher costs, in several countries. Thus, modifying asphalt mixtures with these plastic wastes can be an economical and ecological alternative for paving works. Moreover, the mixtures produced via the dry process showed increased water sensitivity and stiffness modulus properties. This holds out new possibilities for use of polymer-modified mixtures, especially in developing countries, because it widens the possibility of using locally available bitumen, of variable quality, for producing mixtures with higher performance. This can be achieved at real scale with no major extra costs because the dry process does not require modification of typical asphalt plants.
Description"Published online: June 29, 2017"
Publisher version
Appears in Collections:C-TAC - Artigos em Revistas Internacionais

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