FLEXURAL STRENGTH, DUCTILITY INDEX AND DEFORMATION CHARACTERISTICS OF HPC BEAMS

Apart from strength and durability, deformation and flexural ductility are important parameters to be considered in the design of structural elements of High Performance Concrete. Change in the mechanical properties of HPC is very important in understanding structural behaviour. Research and codal provisions of conventional concrete might not be entirely applicable to HPC, whose maximum potential cannot be realised fully in structures unless the deformability and failure characteristics of HPC flexural members are fully known. The flexural behaviour of HPC beams was conducted with 16 beam specimens of size 125mm X 250mm X 1800mm using two-point loading. The beams were simply supported; the main variables being concrete strength(f_ck) and reinforcement ratio(ρ/ρ_b). Experimental results suggest that cracking, yield and ultimate load of the HPC beams depend on concrete strength(f_ck) and reinforcement ratio(ρ). It was observed that parameter (ρ/ρ_b) is an important factor in the deformability and flexural ductility of HPC beams.

• INTRODUCTION

• LITERATURE REVIEW

• SCOPE OF PRESENT INVESTIGATION

• EXPERIMENTAL OBSERVATIONS

• RESULTS AND COMPARISONS

• SUMMARY AND CONCLUSIONS

• REFERENCES