STRUCTURAL BEHAVIOUR OF STRENGTHENED HIGH PERFORMANCES CONCRETE – FILLED STEEL TUBE BEAMS

Rapid development of Infrastructure is witnessed throughout the world. Many structures
deteriorate that become unstable due to various reasons. Occurrence of natural calamities may
also lead to one of the major problem. In many cases the past constructions reveal certain up
gradations is necessary in three conditions which are the structure is inadequately designed for
the loading conditions, structures that are found deficient under seismic conditions and the
structure is damaged and requires rehabilitation. HPC has undergone many growths based on the
persuade of cement type known as Ordinary Portland Cement (OPC) , type of mineral
admixtures that are superplasticizer and the fine aggregates. The constituent materials of HPC
depend on the desired characteristics and the availability of suitable local economic alternatives.