Compressive behaviour of concrete column confined with basalt textile reinforced ECC

Abstract

This paper presents experimental and numerical studies on the compressive behaviour of concrete columns strengthened with a composite reinforcement layer, which was combined by basalt fibre textile and Engineered Cementitious Composites (ECC). Concrete columns strengthened with textile reinforced ECC, textile reinforced mortar (TRM) and unreinforced were tested to investigate their compressive behaviour. The experimental results showed that the columns confined with textile reinforced ECC exhibited a better performance in strength and ductility than columns confined with TRM. A three-dimensional finite element model was developed to investigate the behaviour of concrete column strengthened with textile reinforced ECC, and the model was validated by comparing the results with those obtained from experiments. A parametric study was then conducted to investigate the effects of spacing and number of textile layers on the performance of the composite column. An analytical model on compressive resistance of columns with textile reinforced ECC was also developed with consideration of the spacing and number of textile layers.