In the present study, stress-stain behaviour of confined concrete made with basalt fibre reinforced polymer bars (BFRP) were taken up. The stress-strain was studied for mixes steel rebars and BFRP rebars. confinement given in form hoops cylinders, 3 (0.8%), 4 (1.1%), 5 (1.3%) 6 (1.6%). addition fibres along enhanced compressive strength, indicating further effect concrete. It is observed that h...

This paper presents the results of an experimental study into the behavior of concrete-filled steel tube columns confined by fiber-reinforced polymer (FRP). Eleven columns were tested to investigate the effects of the FRP layer number, the thickness of the steel tube and concrete strength on their load capacity and axial deformation capacity. The experimental results indicated that the FRP wrap...

Accurate constitutive models of the constituent materials in a reinforced concrete (RC) section, namely, unconfined concrete, confined concrete and reinforcing steel are necessary in fiber-based discretization of RC components for use in nonlinear analysis of RC structures. This paper examines the sensitivity to different constitutive models in predicting the inelastic seismic behavior of RC fr...

Common transverse reinforcement of reinforced concrete members with circular cross-section consists of round ties or spirals. Its purpose in members that are not subjected to significant shear loading is to provide proper confinement for concrete, and eliminate buckling of the longitudinal reinforcement bars. If spirals are to be used as both shear enabler and confiner for reinforced concrete b...

In the present study, stress-stain behaviour of confined concrete made with nano-silica (nano-SiO 2 ) were taken up. The stress-strain was studied for M30 and M50 grades mixes steel rebars. confinement given in form hoops cylinders, 3 (0.8%), 4 (1.1%), 5 (1.3%) 6 (1.6%). addition along enhanced compressive strength, indicating further effect concrete. It is observed that helpful lower confineme...

Suppression of softening in the load-deflection diagram of concrete-filled tubular columns and spiral columns is proposed to serve as a design criterion helping to avoid the size effect and explosive brittle character of collapse. To this end, the recently developed ‘‘tube-squash’’ tests, in which a short concrete-filled steel tube is squashed to about a half of its original length and allowed ...

The main objective of this study is to evaluate the workability of fresh portland cement concrete while it is still in the mixing truck by determining fundamental rheological parameters (plastic viscosity and yield stress). Nine concrete mixtures with different values of yield stress and plastic viscosity were tested in a concrete truck. The measurements made with the truck were based on the ty...