0000000000823271
AUTHOR
Chiara Mignini
Rheological characterisation of cold bitumen emulsion slurries
The performance of cold bitumen emulsion (CBE) mixtures is strongly linked to an optimised design of the binder blends and mastics. Types and dosages of bitumen, mineral additions and the workability must be characterised and optimised. This study aims at providing an approach for the fundamental characterisation of CBE materials using rotational viscometry. Firstly, a procedure for measuring the viscosity of CBE slurries using the Brookfield viscometer was investigated by comparing results obtained by using a traditional spindle geometry and a novel impeller engineered to avoid phase separation: the dual helical ribbon (DHR). Afterwards, the effect of mineral additions and bitumen emulsion…
Investigating Tools for Sustainability Assessment of Road Pavements in Europe
Sustainability assessment (SA) is a method to support decision making processes through the evaluation of system effectiveness, environmental integrity, economic valuation, and social implications [1]. SA can be carried out through the application of life-cycle-based techniques for quantitative assessment, or by performing a mainly qualitative approach via sustainability rating systems (SRS). In the field of civil engineering, many SRS have been proposed, all based on assigning point values to actions that are determined to contribute to the overall sustainability of the project. However, only few of these systems can be applied specifically to compare road pavement technologies and/or main…
Life Cycle Management delle pavimentazioni stradali
Ormai parola chiave della nostra società, la sostenibilità è al centro di ricerche e dibattiti. La comunità scientifica si impegna da anni nella definizione di strumenti e metodologie comuni per riuscire a quantificarla, proponendo standard e linee guida basate sull’analisi del ciclo di vita, come il Life Cycle Assessment (LCA), di prodotti e processi. Nell’ambito dell’ingegneria civile esistono procedure standardizzate a livello internazionale per svolgere esercizi di Sustainability Assessment; queste risultano ben strutturate per gli edifici, meno dettagliate invece per altre opere, come le pavimentazioni stradali. Questo lavoro presenta il risultato principale del progetto “PavementLCM”,…