How can I calculate deflection of SFRC beams (ordinary and high strength)? Is there ACI or other proposals?
It depends on the applied loads, specimen geometry, and material properties.
Beams are loaded with short-term ultimate load, beam dimensions 15/28/300 cm, and I am analyzing ordinary strength C30/37 and high strength C60/75 concrete beams with steel fibers and conventional reinforcement.
The best procedure I can suggest you is reflected in ASTM C1609. This test method provides an accurate procedure for measuring the toughness of fiber reinforced concrete based on measuring concrete beams deflection under loads.
Alternatively, you can simply use LVDT device. It is broadly used by researchers, however, if it is set up in a different way from the procedure that ASTM C1609 describes, you may get inaccurate results. BUT still you can compare your results relatively, irrespective of the absolute value of deflection.
please download my paper, it explain test procedure and it can help you a lot
Regards
I have already conducted the experiment, I am looking for theoretical procedure for deflection calculation for SFRC beams.
it's better for you to see ACI 544.4R . it's about "Design Considerations for Steel Fiber Reinforced Concrete."
Marco di Prisco, Matteo Colombo, Daniele Dozio:
"Fibre-reinforced concrete in fib Model Code 2010: principles, models and test validation"
DOI: 10.1002/suco.201300021
Marco di Prisco, Matteo Colombo, Daniele Dozio:
"Fibre-reinforced concrete in fib Model Code 2010: principles, models and test validation"
DOI: 10.1002/suco.201300021
Marco di Prisco, Matteo Colombo, Daniele Dozio:
"Fibre-reinforced concrete in fib Model Code 2010: principles, models and test validation"
DOI: 10.1002/suco.201300021
Marco di Prisco, Matteo Colombo, Daniele Dozio:
"Fibre-reinforced concrete in fib Model Code 2010: principles, models and test validation"
DOI: 10.1002/suco.201300021
Seong-Cheol LEE, Jae-Yeol CHO, Frank J. VECCHIO:
"Constitutive Models for Steel Fibre Reinforced Concrete Members"
Seong-Cheol LEE, Jae-Yeol CHO, Frank J. VECCHIO:
"Constitutive Models for Steel Fibre Reinforced Concrete Members"
Seong-Cheol LEE, Jae-Yeol CHO, Frank J. VECCHIO:
"Constitutive Models for Steel Fibre Reinforced Concrete Members"
Deflection of combined (steel fibre and ordinary) reinforced concrete beam can be calculated according to Eurocode 2 method, however residual tensile strength should be considered. As a simple approximation this strength can be calculated according to guidance of RILEM recommendations (2003). There is an example in Dupont's PhD theses.
- Badges
- Science topic