This paper presents the results of an experimental investigation which was carried out with the purpose of assessing the performance-related properties of self-compacting cement-bound mixtures to be employed in pavement foundations in road tunnels. The mixtures contained a significant quantity of recycled components and function-specific additives. Characteristics of the mixtures, which were produced in a concrete batch plant, were studied by means of laboratory and field tests. Investigated properties included flowability, compressive strength, resilient modulus and bearing capacity. It was found that mixtures prepared with a cement dosage of up to 100 kg/m3 possess the required properties of flowability, strength and stiffness. On the contrary, mixtures with higher cement dosages (150 and 200 kg/m3) fail to meet all the performance-related requirements as a result of their high long-term strength which jeopardises excavatability. Obtained results also highlighted the effects of the different components on the properties of the mixtures and led to the definition of acceptance criteria which can be adopted in actual construction works.
Self-compacting cement-bound pavement foundations for road tunnels: performance assessment in field trials / Santagata, Ezio; CHOORACKAL AVIRACHAN, Eldho; Riviera, PIER PAOLO. - In: INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING. - ISSN 1029-8436. - ELETTRONICO. - 23:6(2022), pp. 1814-1831. [10.1080/10298436.2020.1825709]
Self-compacting cement-bound pavement foundations for road tunnels: performance assessment in field trials
Ezio Santagata;Eldho Choorackal;Pier Paolo Riviera
2022
Abstract
This paper presents the results of an experimental investigation which was carried out with the purpose of assessing the performance-related properties of self-compacting cement-bound mixtures to be employed in pavement foundations in road tunnels. The mixtures contained a significant quantity of recycled components and function-specific additives. Characteristics of the mixtures, which were produced in a concrete batch plant, were studied by means of laboratory and field tests. Investigated properties included flowability, compressive strength, resilient modulus and bearing capacity. It was found that mixtures prepared with a cement dosage of up to 100 kg/m3 possess the required properties of flowability, strength and stiffness. On the contrary, mixtures with higher cement dosages (150 and 200 kg/m3) fail to meet all the performance-related requirements as a result of their high long-term strength which jeopardises excavatability. Obtained results also highlighted the effects of the different components on the properties of the mixtures and led to the definition of acceptance criteria which can be adopted in actual construction works.File | Dimensione | Formato | |
---|---|---|---|
Post_print_manuscript_IJPE_2020.pdf
Open Access dal 06/10/2021
Descrizione: Versione post referaggio
Tipologia:
2. Post-print / Author's Accepted Manuscript
Licenza:
Creative commons
Dimensione
397.38 kB
Formato
Adobe PDF
|
397.38 kB | Adobe PDF | Visualizza/Apri |
Published_Manuscript_IJPE_2020.pdf
non disponibili
Descrizione: Versione editoriale
Tipologia:
2a Post-print versione editoriale / Version of Record
Licenza:
Non Pubblico - Accesso privato/ristretto
Dimensione
3.17 MB
Formato
Adobe PDF
|
3.17 MB | Adobe PDF | Visualizza/Apri Richiedi una copia |
Published_Manuscript_IJPE_2020_Issue.pdf
non disponibili
Descrizione: Versione editoriale finale (volume, fascicolo)
Tipologia:
2a Post-print versione editoriale / Version of Record
Licenza:
Non Pubblico - Accesso privato/ristretto
Dimensione
3.31 MB
Formato
Adobe PDF
|
3.31 MB | Adobe PDF | Visualizza/Apri Richiedi una copia |
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
https://hdl.handle.net/11583/2847525