Effects of Carbon Fiber on Strength of Concrete

Abstract

Experimental investigations were carried out to evaluate the effect of carbon fibers on strength of concrete. The concrete mix of M-25 grade was considered and produced by replacing carbon fibers with cement. Modified concrete is produced by adding carbon fibers with various percentages as 0 to 0.6% at an interval of 0.2% with 10 and 20 mm in length. The compressive and flexural strengths are considered for investigations. Cube of size 150 mm´150 mm´150 mm for compressive strength; and beams of size 500 mm´100 mm´100 mm for flexural strength are considered. All the specimens were water cured up to 7 and 28 days and tested subsequently. Relations between compressive strength with all other strengths are developed. A comparison of result of modified carbon fiber reinforced concrete with that of normal concrete, showed significant improvement in the result of various strengths.