Location
Cork Institute of Technology, Cork, Ireland
Event Website
https://event.ceri2020.exordo.com/
Start Date
27-8-2020 3:00 PM
End Date
27-8-2020 4:15 PM
Description
Ultra-High-Performance Fibre Reinforced Concrete (UHPFRC) has received extensive attention due to its excellent mechanical properties. UHPFRC not only offers a very high compressive strength, but also a unique tensile strain-hardening behaviour. Casting method is critical as it determines the fibre alignment, which in turn affects the performance of UHPFRC. In practice, casting in one single pour requires large equipment, large volume of concrete and it is time consuming and in general difficult to achieve. To evaluate the flexural behaviour, 3PB (three-point bending) and 4PB (four-point bending) tests are generally carried out following the methodologies recommended by the material testing standards, i.e. RILEM TC 162-TDF and ASTM C 1609/C 1609M-12 for 3PB and 4PB tests, respectively. The differences between these two tests are: a) 3PB requires a notch, cut at the mid-span of the specimen, to enforce the crack localisation there, b) 4PB results in a constant moment between the loading points with no restraint on the crack formation and localisation. Therefore, in general, the flexural strength of 4PB tests more accurately represents that of a beam in practice. There is not yet a consensus on the most appropriate bending test configuration to characterise the flexural behaviour of the UHFPRC. In this research, an experimental programme was conducted to evaluate the effect of casting and testing methods on the flexural behaviour of UHPFRC beams.
Recommended Citation
He, Yuanye; Esmaeeli, Esmaeel; and Soutsos, Marios, "Effect of Casting Method and Test Setup on Flexural Characterization of UHPFRC" (2020). Civil Engineering Research in Ireland 2020. 2.
https://sword.cit.ie/ceri/2020/8/2
Included in
Civil Engineering Commons, Construction Engineering and Management Commons, Environmental Engineering Commons, Geotechnical Engineering Commons, Hydraulic Engineering Commons, Structural Engineering Commons, Transportation Engineering Commons
Effect of Casting Method and Test Setup on Flexural Characterization of UHPFRC
Cork Institute of Technology, Cork, Ireland
Ultra-High-Performance Fibre Reinforced Concrete (UHPFRC) has received extensive attention due to its excellent mechanical properties. UHPFRC not only offers a very high compressive strength, but also a unique tensile strain-hardening behaviour. Casting method is critical as it determines the fibre alignment, which in turn affects the performance of UHPFRC. In practice, casting in one single pour requires large equipment, large volume of concrete and it is time consuming and in general difficult to achieve. To evaluate the flexural behaviour, 3PB (three-point bending) and 4PB (four-point bending) tests are generally carried out following the methodologies recommended by the material testing standards, i.e. RILEM TC 162-TDF and ASTM C 1609/C 1609M-12 for 3PB and 4PB tests, respectively. The differences between these two tests are: a) 3PB requires a notch, cut at the mid-span of the specimen, to enforce the crack localisation there, b) 4PB results in a constant moment between the loading points with no restraint on the crack formation and localisation. Therefore, in general, the flexural strength of 4PB tests more accurately represents that of a beam in practice. There is not yet a consensus on the most appropriate bending test configuration to characterise the flexural behaviour of the UHFPRC. In this research, an experimental programme was conducted to evaluate the effect of casting and testing methods on the flexural behaviour of UHPFRC beams.
https://sword.cit.ie/ceri/2020/8/2
