Study on long-term deformation and draindown properties of rubberized porous asphalt

Elsafty, Mohamed Mahmoud Mohamed Hafez (2016) Study on long-term deformation and draindown properties of rubberized porous asphalt. [Laurea magistrale], Università di Bologna, Corso di Studio in Civil engineering [LM-DM270], Documento full-text non disponibile
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The current research focused on the feasibility of CR incorporation in porous asphalt and the effectiveness on the permanent deformation behavior by the following high lights. In the first stage, a broad investigation (Literature review study) have been done in order to clarify the potential effectiveness of CR incorporation in any hot mix asphalt mixture by dry process, more focus on the porous asphalt experience. In the following the draindown test conducted in order to assess the feasibility CR replaced by common draindown fibers. Finally, experimental work continued by Creep characterization to evaluate the influence of CR on permanent deformation deficiencies of porous asphalt. In the current research, the Polymer Modified Bitumen (PMB) is used during the mix design procedure, and in this way the compatibility of the PMB with CR investigated. In addition, the workability of the mixture considering the CR dry process incorporation with PMB was visually investigated and compared. The results proved that the application of CR by dry process could improve the draindown properties of the mixture comparing to the conventional mixtures using common draindown mixtures, which from the economic and environmental point of view is crucial. The Uniaxial Cyclic Compression test results (creep characteristics) did not show apparent and remarkable differences within the reference (control) mixtures.

Tipologia del documento
Tesi di laurea (Laurea magistrale)
Autore della tesi
Elsafty, Mohamed Mahmoud Mohamed Hafez
Relatore della tesi
Correlatore della tesi
Corso di studio
Ordinamento Cds
Parole chiave
Porous asphalt,PmB (Polymer modified Asphalt),Dry process,Creep characteristics,Draindown characteristics
Data di discussione della Tesi
19 Dicembre 2016

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