The present paper presents the results of an experimental campaign aimed at investigating the mechanical performances of different FRC shotcrete mixes by means of tests on square (EN 14488-5) and circular panels (ASTM C1550-12). In particular, two different concrete mixes were tested, they featured the same aggregates, but one of the two mixes contained silica fumes a replacement of a fraction of cement. Different dosages of macro synthetic fibres (3 to 8.5 kg/m3) were used in each of the two mixes as well as a single dosage of steel fibres (30 kg/m3). Both sprayed and cast panels were considered. In addition to these panels cast notched prisms were tested in three-point bending. The paper discusses the mechanical behaviour of the various specimens, analysing the influence of concrete mix and fibre dosage, and presents correlations among different tests.

Energy absorption tests on fibre-reinforced-shotcrete round and square panels

Buratti N.;Incerti A.;Mazzotti C.;
2019

Abstract

The present paper presents the results of an experimental campaign aimed at investigating the mechanical performances of different FRC shotcrete mixes by means of tests on square (EN 14488-5) and circular panels (ASTM C1550-12). In particular, two different concrete mixes were tested, they featured the same aggregates, but one of the two mixes contained silica fumes a replacement of a fraction of cement. Different dosages of macro synthetic fibres (3 to 8.5 kg/m3) were used in each of the two mixes as well as a single dosage of steel fibres (30 kg/m3). Both sprayed and cast panels were considered. In addition to these panels cast notched prisms were tested in three-point bending. The paper discusses the mechanical behaviour of the various specimens, analysing the influence of concrete mix and fibre dosage, and presents correlations among different tests.
Tunnels and Underground Cities: Engineering and Innovation meet Archaeology, Architecture and Art- Proceedings of the WTC 2019 ITA-AITES World Tunnel Congress
1842
1851
Buratti N.; Incerti A.; Tilocca A.R.; Mazzotti C.; Paparella M.; Draconte M.
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11585/729553
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? ND
social impact