PERFORMANCE OF FIBER BASED CONCRETE IN FLEXURE

Abstract

The purpose of this research is based on the investigation of the use of short fibers in structural concrete to enhance the flexural and mechanical properties of concrete. The objective of the study is to study the performance of fiber based concrete in flexure. This investigation was carried out using several tests, which included workability test, compressive test, indirect tensile test, flexural test A total of fourteen mix batches of concrete containing 0%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, and 0.6% fiber volume fraction used. The workability of concrete significantly reduced as the fiber dosage rate increases. This was assessed through standard slump test. Results of compressive strength test indicated that the use of fiber in concrete might not efficiently increase in strength. In flexural and indirect tensile test showed specimens with fibers that drastic increase in strength from specimens without fibers. The usage of fibers was fully utilized when it comes to post-cracking stage. The results of beam tested in flexure shows the flexure and deformation characteristics of fiber based concrete. It was found that that increase in first crack strength, and ultimate load was mainly depends on percentage volume fraction of fiber. However, further investigations were highly recommended and should be carried out to understand more mechanical properties of fiber reinforced concrete.