The following thesis represents a study on Warm Mix Asphalt mixtures obtained using a new Korean additive, carried out in collaboration with: • Politecnico di Milano • University of Iowa • Korean institute of Construction Technology (KICT) • Kumho Petrochemical • CO-BIT s.p.a. • CIC s.p.a. The research includes: • Laboratory tests performed in Italy with CO-BIT s.p.a. carried out between August and October 2010. • Experimental Paving performed in Italy with CO-BIT s.p.a. and CIC s.p.a. carried out in November 2010. • Field tests performed on the new pavement carried out in November 2010. • Laboratory tests performed at the University of Iowa between November 2010 and February 2011. This essay consists in: • A general introduction about what WMA is, the technologies used to produce it and and the benefits it brings; • An overview on the different types of additives now available, their properties, their strengths and weaknesses; • A specific description of the Korean additive under study, including its composition, the way it works, the studies behind its implementation and the tests already carried out to verify its efficiency; • A paving session, carried out in Italy in collaboration with CO-BIT s.p.a. and CIC s.p.a. on an existing road located in Lonate Pozzolo. The aim of this experiment was to compare the behavior of both mixtures under the influence of real traffic; • A laboratory session, carried out in Italy in collaboration with CO-BIT s.p.a.. The aim of this tests was to make a comparison between Hot Mix and Warm Mix Asphalt mixtures. This session includes a series of Marshall Test, Indirect Tensile Strength Test and Stiffness Test; • A laboratory session, made in the U.S.A. in collaboration with The University Of Iowa. The goal of these tests was making a comparison between WMA mixtures obtained using different percentages of additive in order to evaluate how the amount of additive can affect the whole performance of the mixture. • Comments and conclusions on the data collected, critics on the results obtained and proposals for the future.
La seguente tesi è costituita da uno studio sulle miscele bituminose di WMA (asfalto tiepido) ottenute utilizzando un additivo di origine Coreana, questo lavoro è stato sviluppato in collaborazione con: • Politecnico di Milano • University of Iowa • Korean Institute of Construction Technology (KICT) • Kumho Petrochemical • CO-BIT s.p.a. • CIC s.p.a. La ricerca totale comprende: • Una sessione di test di laboratorio eseguita in Italia in collaborazione con CO-BIT s.p.a. tra agosto ed ottobre 2010; • L’esecuzione di una pavimentazione sperimentale in Italia in collaborazione con CO-BIT s.p.a. e CIC s.p.a. svolta a novembre 2010; • Una serie di test eseguiti sulla nuova pavimentazione sia a novembre 2010 che a febbraio 2011; • Una sessione di test di laboratorio eseguita presso the University of Iowa realizzata tra novembre 2010 e febbraio 2011. Questo elaborato è costituito da: • Un’introduzione generale sul WMA (asfalto tiepido), sulle tecnologie utilizzate per produrlo e sui benefici che esso a dare; • Una panoramica sui differenti tipi di additivi per il WMA presenti sul mercato, le loro proprietà, i pregi ed i difetti; • Una specifica descrizione sull’additivo Coreano utilizzato per tutto il progetto di tesi, sulla sua composizione, sugli studi ed i test già fatti su di esso in fase di sviluppo; • Lo studio di una nuova pavimentazione eseguita con questo tipo di additivo, in collaborazione con CO-BIT s.p.a. e CIC s.p.a., situata in Lonate Pozzolo. L’obiettivo dello studio di questa pavimentazione è quello di confrontare le prestazioni di una miscela di asfalto normale (HMA) e della miscela a tiepido (WMA) sotto l’effettiva influenza del traffico stradale; • Una serie di test di laboratorio eseguita in Italia in collaborazione con CO-BIT s.p.a.. L’obiettivo di questa ricerca è di confrontare le prestazioni di una normale miscela di bitume (HMA) con la miscela a tiepido realizzata con l’additivo Coreano (WMA). Nell’ambito di questo studio sono stati eseguiie: Marshall Test, Indirect Tensile Strenght Test e Stiffness Test; • Una serie di test di laboratorio eseguita negli Stati Uniti di America in collaborazione con the University of Iowa. L’obiettivo di questo studio è di eseguire un confronto tra diverse miscele di WMA realizzate con differenti percentuali dell’additivo Coreano, con lo scopo di valutare l’effetto che diverse aggiunte di additivo possono creare sul comportamento della miscela; • Commenti e conclusioni sui dati ottenuti, spunti per critiche sugli esperimenti eseguiti e proposte per il futuro.
A joint in situ and in lab experiment between Politecnico di Milano and University of Iowa on WMA in road pavement : mix design and performances
CASSANI, GIACOMO
2009/2010
Abstract
The following thesis represents a study on Warm Mix Asphalt mixtures obtained using a new Korean additive, carried out in collaboration with: • Politecnico di Milano • University of Iowa • Korean institute of Construction Technology (KICT) • Kumho Petrochemical • CO-BIT s.p.a. • CIC s.p.a. The research includes: • Laboratory tests performed in Italy with CO-BIT s.p.a. carried out between August and October 2010. • Experimental Paving performed in Italy with CO-BIT s.p.a. and CIC s.p.a. carried out in November 2010. • Field tests performed on the new pavement carried out in November 2010. • Laboratory tests performed at the University of Iowa between November 2010 and February 2011. This essay consists in: • A general introduction about what WMA is, the technologies used to produce it and and the benefits it brings; • An overview on the different types of additives now available, their properties, their strengths and weaknesses; • A specific description of the Korean additive under study, including its composition, the way it works, the studies behind its implementation and the tests already carried out to verify its efficiency; • A paving session, carried out in Italy in collaboration with CO-BIT s.p.a. and CIC s.p.a. on an existing road located in Lonate Pozzolo. The aim of this experiment was to compare the behavior of both mixtures under the influence of real traffic; • A laboratory session, carried out in Italy in collaboration with CO-BIT s.p.a.. The aim of this tests was to make a comparison between Hot Mix and Warm Mix Asphalt mixtures. This session includes a series of Marshall Test, Indirect Tensile Strength Test and Stiffness Test; • A laboratory session, made in the U.S.A. in collaboration with The University Of Iowa. The goal of these tests was making a comparison between WMA mixtures obtained using different percentages of additive in order to evaluate how the amount of additive can affect the whole performance of the mixture. • Comments and conclusions on the data collected, critics on the results obtained and proposals for the future.| File | Dimensione | Formato | |
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2011_03_Cassani.pdf
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https://hdl.handle.net/10589/16125