Evaluate the Performance of Concrete with Acrylic and Carbon Nano Fibers

Abstract

Addition of fiber reinforcement in discrete form improves many engineering properties of concrete. Currently Fiber reinforced concrete (FRC) is a new structural material which is gaining increasing importance. Very little research work is being conducted in India using this new material. This report describes the use of synthetic fibers and the comparison of PCC & FRC is made on the basis of different mechanical properties. Shrinkage cracking of concrete is a major problem in plain cement concrete especially in tropical regions. To overcome shrinkage cracking of plain concrete, the addition of synthetic fiber to the concrete mix is suggested. This report briefly discusses the effects of addition of acrylic and carbon nano fibre on the properties of concrete mix of 25 Mpa.. Concrete mixes with fiber dosage 0.25%, 0.5%, 1% and 1.25% by volume fraction besides the control concrete mix were manufactured. Acrylic fibre and carbon nano fiber were used in this study. The properties such as workability, flexural strength & split tensile strength of the concrete were evaluated. The study suggested a significant increase in flexural strength. Further, an improved spilt tensile strength for the concrete mixes reinforced with fiber was also observed.