This work presents the results of the overall design of the ﬁrst Italian roundabout with jointed plain concrete pavement. The examined case study complies with current international standards and practices for geometry of roundabouts and road pavements. The construction of a concrete pavement in an urban roundabout will better manage and slow down fast vehicular ﬂows, and increase trafﬁc ﬂuidity in an important junction, trafﬁcked by heavy vehicles, where maintenance works should be reduced to avoid queues. The design of the roundabout involved several competences for: deﬁning the geometry of the four-arm junction, designing the thickness of the jointed plain concrete pavement both on the circular crown and the arms, studying the mix design of a high resistance concrete. As regard to the pavement, the result of the study was an un-dowelled concrete pavement composed of square slabs laid on a cement concrete subbase and a granular layer. The shape of the slabs has been designed to optimize the structural performance of their material, which is a high strength concrete mix derived from an extensive laboratory test work. In general, the results summarized approaches typical of different design conditions: urban ones for trafﬁc ﬂow and safety needs; high-trafﬁc ones for the chosen pavement type; airport ones for the absence of dowel and tie bars at the joints. Indeed, the article has highlighted that the design process of a concrete roundabout requires multiple analyses to consider various features and correctly re-design anexistingurbanjunction. Its geometrical design,the structural design of the concrete pavement and the theoretical and experimental design of the concrete mix were the main phases of this process and they needed different competences to conduct comprehensive and appropriate analyses.
Design of the first Italian roundabout with jointed plain concrete pavement / Di Mascio, Paola; Loprencipe, Giuseppe; Moretti, Laura; Corazza, Maria Vittoria; Vivaldi, Sergio; Vincenti, Giovanni. - In: APPLIED SCIENCES. - ISSN 2076-3417. - ELETTRONICO. - 8:2(2018).
|Titolo:||Design of the first Italian roundabout with jointed plain concrete pavement|
MORETTI, LAURA (Corresponding author)
|Data di pubblicazione:||2018|
|Citazione:||Design of the first Italian roundabout with jointed plain concrete pavement / Di Mascio, Paola; Loprencipe, Giuseppe; Moretti, Laura; Corazza, Maria Vittoria; Vivaldi, Sergio; Vincenti, Giovanni. - In: APPLIED SCIENCES. - ISSN 2076-3417. - ELETTRONICO. - 8:2(2018).|
|Appartiene alla tipologia:||01a Articolo in rivista|