The paper aims to analyse the effects of pretreatment thermal cycles on both mechanicaland fracture parameters of the red Verona marble, which is a natural stone of sedimentaryformation. The effects of the thermal pretreatment, consisting of freeze/thaw cyclesand simulating the atmospheric ageing on the material, are evaluated in terms of changesof the aforementioned parameters. Note that a wide variety of both specimen types andmethods to determine mode I plain strain fracture toughness of rocks are available in theliterature. The two-parameter model originally proposed for plain concrete is hereinadopted. Such a method, based on the experimental data obtained from three-pointbending tests on single edge-notched specimens, is able to take into account the slownonlinear crack growth occurring before the peak load, typical of quasibrittle materials,and presents the advantages of easy specimens preparation and simple test configuration.

Mode I fracture toughness of the thermally pretreated red Verona marble by means of the two-parameter model

RONCHEI, Camilla;
2015

Abstract

The paper aims to analyse the effects of pretreatment thermal cycles on both mechanicaland fracture parameters of the red Verona marble, which is a natural stone of sedimentaryformation. The effects of the thermal pretreatment, consisting of freeze/thaw cyclesand simulating the atmospheric ageing on the material, are evaluated in terms of changesof the aforementioned parameters. Note that a wide variety of both specimen types andmethods to determine mode I plain strain fracture toughness of rocks are available in theliterature. The two-parameter model originally proposed for plain concrete is hereinadopted. Such a method, based on the experimental data obtained from three-pointbending tests on single edge-notched specimens, is able to take into account the slownonlinear crack growth occurring before the peak load, typical of quasibrittle materials,and presents the advantages of easy specimens preparation and simple test configuration.
Freeze/thaw cycles; Mode I fracture toughness; Red Verona marble; Two-parameter model; Mechanical Engineering; Mechanics of Materials; Materials Science (all)
File in questo prodotto:
Non ci sono file associati a questo prodotto.

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: https://hdl.handle.net/20.500.11770/304673
 Attenzione

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

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 9
  • ???jsp.display-item.citation.isi??? 9
social impact