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Axial compressive behaviour of circular CFFT: Experimental database and design-oriented model
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 Title & Authors
Axial compressive behaviour of circular CFFT: Experimental database and design-oriented model
Khan, Qasim S.; Sheikh, M. Neaz; Hadi, Muhammad N.S.;
 Abstract
Concrete Filled Fibre Reinforced Polymer Tube (CFFT) for new columns construction has attracted significant research attention in recent years. The CFFT acts as a formwork for new columns and a barrier to corrosion accelerating agents. It significantly increases both the strength capacity (Strength enhancement ratio) and the ductility (Strain enhancement ratio) of reinforced concrete columns. In this study, based on predefined selection criteria, experimental investigation results of 134 circular CFFT columns under axial compression have been compiled and analysed from 599 CFFT specimens available in the literature. It has been observed that actual confinement ratio (expressed as a function of material properties of fibres, diameter of CFFT and compressive strength of concrete) has significant influence on the strength and ductility of circular CFFT columns. Design oriented models have been proposed to compute the strength and strain enhancement ratios of circular CFFT columns. The proposed strength and strain enhancement ratio models have significantly reduced Average Absolute Error (AAE), Mean Square Error (MSE), Relative Standard Error of Estimate (RSEE) and Standard Deviation (SD) as compared to other available strength and strain enhancement ratios of circular CFFT column models. The predictions of the proposed strength and strain enhancement ratio models match well with the experimental strength and strain enhancement ratios investigation results in the compiled database.
 Keywords
column;CFFT;confinement ratio;strength enhancement ratio;strain enhancement ratio;
 Language
English
 Cited by
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Axial-Flexural Interactions of GFRP-CFFT Columns with and without Reinforcing GFRP Bars, Journal of Composites for Construction, 2017, 21, 3, 04016109  crossref(new windwow)
2.
Concrete Filled Carbon FRP Tube (CFRP-CFFT) columns with and without CFRP reinforcing bars: Axial-flexural interactions, Composites Part B: Engineering, 2018, 133, 42  crossref(new windwow)
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