Performance of extruded polyester fiber reinforced concrete

Abstract

The present work deals with the results of experimental investigations on extruded polyester fiber reinforced concrete. Effect of these fibers on various strengths of concrete are studied. Fiber content varied from 0.5 % to 5 % by weight of cement. Various strengths considered for investigation are compressive strength, flexural strength, split tensile strength and the bond strength. Cube of size 100 mm for compressive strength, beams of size 500 mm × 100 mm × 100 mm for flexural strength and cylinders of size 100 mm (diameter) × 200 mm (length) were cast to determine split tensile strength. All the specimens were water cured up to 7 and 28 days and tested subsequently. The workability was measured with the slump cone test. The wet and dry densities at 7 and 28 days were obtained. The static and dynamic moduli of concrete were determined. A comparison of results of extruded polyester fiber reinforced concrete with that of normal concrete showed the improvements in various strengths. The Poisson’s ratio is found to vary within the specified limits.