MECHANICAL & STRUCTURAL CHARACTERISTIC OF HYBRID FRC.

Background/Objectives: To evaluate the suitability of short rubber fiber, coir fiber & PP as a reinforcing agent in cement concrete/ mortar. Methods/Statistical analysis: Based on basic properties data of material a mix design for M20 grade concrete taking a weight fraction of cement is 1%.For this work 12nos of cube (150 mm * 150 mm * 150 mm) and 12nos of beam (700mm *150 mm*150 mm) were casted by using different fiber proportion of polypropylene fiber, coir fiber & rubber fiber in the laboratory; and for the compared study with the HFRC one set of control specimen were cast. Findings: All the cube specimens were tested by UTM and beam specimens were also tested in UTM by using two points loading as per IS 516-1959. The test result shows that the hybrid of 1% with PP, CC & RF combination specimens improves compressive strength & flexural strength as compared with control specimen. Applications/Improvements: The hybrid fiber reinforced concrete can be used in non-structural components like Walls & Surfaces of Septic Tank, Water Storage Tanks and Dams, Sports Grounds, Industrial, Residential Floors, Warehouses & also used in severe earthquake area etc. The major contribution of fibers in crack resistance and crack control, improve the ductility of concrete.