ENGINEERED FERRO FIBER CONCRETE

摘要

The combination of fiber and ferrocement can be made use in developing a concrete composite with large ductility, which is one of the prime requirements in structures subjected to seismic forces. Such concrete composite can be termed as ENGINEERED FERRO FIBER CONCRETE (EFFC) or HYBRID FERRO FIBER CONCRETE (HFFC). This paper presents an experimental investigation on the behavior of EFFC under axial compression. The main variable considered in this study was specific surface factor (S_f) of ferrocement shell. A total of 21 prism specimens of size 150mmX150mmX300mm were tested under strain control rate of loading. The results indicated that the combined use of ferrocement and fibers has improved the ultimate strength, strain at ultimate strength and the ductility. The improvement is proportional to the specific surface factor (S_f) of ferrocement shell for a given confinement index (C_i) of lateral reinforcement and reinforcing index (Rl) of steel fiber reinforced concrete.The ductility potential of EFFC is highlighted.