Experimental study on behaviour of nano material concrete columns

Abstract

Concrete is the most significant building material, without a close alternative, due to this there have been major advancement in concrete technology and the need to reinforcing has been made essential. It has been observed that cement-based material, on the addition of nano particles; develop distinctive properties at the molecular and nano level; in an experimental investigation made on square RC columns and nano concrete columns under axial loads. A total of 12 columns in which 6 numbers of RCC and 6 nos of nano concrete columns with 750mm height with square cross section (150mmx150mm) were tested. The loads are applied as concentric compressive loading up to failure. In this research, the behavior of nano concrete column is compared with conventional column. The parameters selected are stiffness, failure force and energy absorption, interpretation strength at ultimate state and service load conditions. Further the deflection and ductility behavior were also determined. The experimental studies showed a great improvement on the strength and energy ductility for nano concrete columns when compared with conventional concrete columns. This experimental study presents that nano concrete columns are capable of bearing increased axial load by 25% when compared to conventional concrete columns.