|Tipo di tesi||Tesi di laurea magistrale|
|Titolo||INFLUENZA SULLE PROPRIETÀ DEL BITUME DI CHIMICHE PURE DERIVATE DA TALL OIL E IDENTIFICAZIONE DI UNO SPECIFICO BIOADDITIVO|
|Titolo in inglese||INFLUENCE ON BITUMEN PROPERTIES OF PURE CHEMISTRY DERIVED FROM TALL OIL AND IDENTIFICATION OF A SPECIFIC BIO-BASED ADDITIVE|
|Struttura||Dipartimento di Ingegneria "Enzo Ferrari"|
|Corso di studi||Ingegneria Civile (D.M.270/04)|
|Data inizio appello||2015-12-10|
|Disponibilità||Accesso limitato: si può decidere quali file della tesi rendere accessibili. Disponibilità mixed (scegli questa opzione se vuoi rendere inaccessibili tutti i file della tesi o parte di essi)|
|Data di rilascio||2055-12-10|
Il traffico severo e le condizioni ambientali hanno richiesto la progettazione di leganti con elevato rendimento da utilizzare nell’asfalto per le pavimentazioni stradali.
Severe traffic and environmental conditions have required the design of high performance binders to be used in asphalt concrete for road pavements. Among additives, biomaterials can be produced by the distillation process of crude tall oil. The natural derivate materials can be efficiently used to control and modify bitumen properties. This thesis focuses on the analysis of bituminous binders produced using different biomaterials. The experimental project was developed during an internship at Arizona Chemical (The Netherlands) where theoretical and experimental activities were performed. Empirical characterization of different bituminous blends were carried out by means of laboratory tests such as penetration and softening point. The effects of the biomaterials in bitumen were assessed also with more fundamental analysis using rheology, like DSR and BBR. Particularly the bituminous blends were analysed considering different dosages of additives and after short-term and long-term aging treatments to obtain an overall characterization. The main objective of the research project was to determine the influence of different tall oil derivatives on bitumen stiffness and temperature sensitivity. The analysis of results allowed the effect of several biomaterials on mechanical properties of pure bitumen to be investigated. By blending liquid and solid tall oil derivatives with bitumen, a general softening effect were noticed, though the addition of chemicals do not cause significant modification in temperature susceptibility of the bituminous blends. The produced bituminous blends allowed technical advantages, such as reduction of mixing and compaction temperatures, to be achieved. Moreover, the blends showed a more flexible behaviour at low service temperatures.