Size effect of HPFRCC in uniaxial tension

Author(s) : G. Ziani, M. Colombo, M. Di Prisco
Paper category : Proceedings
Book title : UHPFRC 2017 Designing and Building with UHPFRC: New large-scale implementations, recent technical advances, experience and standards
Editor(s) : F. Toutlemonde & J. Resplendino
Print-ISBN : 978-2-35158-166-7
e-ISBN : 978-2-35158-167-4
Publisher : RILEM Publications SARL
Publication year : 2017
Pages: 183 - 190
Total Pages : 8
Language : English

Abstract: In the framework of safe design of quasi-brittle materials, the importance of size-effect has been widely established and investigated. Even though effective theoretical models and deterministic approaches are available for plain and reinforced concrete, information regarding advanced cement-based composites is still insufficient. A deep comprehension of such scale dependencies is of fundamental concern, since they may dangerously affect the response of structural elements designed accordingly to deflection-hardening constitutive behaviours defined at the material level. In this preliminary research, uniaxial tensile tests on High Performances Fibre Reinforced Cementitious Composite (HPFRCC) dog-bone specimens were carried out, highlighting the influence of specimen size on the load-bearing capacity and the structural ductility. Four different clear lengths, ranging between 20 and 440 mm were considered and results in terms of nominal stress vs. normalized crack opening displacement were derived, leading to relevant conclusions.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00