|
doi:10.3850/978-981-08-7920-4_S2-S29-cd
The Effect of Transverse Steel and FRP Jacket Confinement on Mechanical Properties of Concrete Cylinders: an Experimental Study
A. R. Khaloo, Yousef Javid and Horr Khosravi
Department of Civil Engineering, Sharif University of Technology, Tehran, Iran.
ABSTRACT
This paper presents the results of an experimental study on the behavior of concrete cylinders
externally wrapped with fiber-reinforced polymer (FRP) composites and internally reinforced
with steel spirals. The experimental work was performed by testing 30 concrete cylinders
(120 × 400mm2) subjected to pure compression to achieve the complete stress-strain curve. Test
specimens were confined with various internal and external confinement ratios and different
types of confining material such as steel, Carbon FRP (CFRP) and Glass FRP (GFRP). The
compressive strength, corresponding strain and the complete stress-strain curve of the tested
specimenswere indicated. The test results showthat the effect of combined external and internal
confinement by FRPs and spirals is different from each of them, separately. In the end, an
empirical model for compressive strength of confined concrete cylinders was proposed.
Keywords: Confined concrete, FRP jacket, Steel spiral, Internal confinement, External confinement, Concrete cylinder, Constitutive model.
Back to TOC
FULL TEXT(PDF)
|