Impact of Coconut Fibre and Polypropylene Fibre (Recron 3s) on Concrete Mix Including Admixture

Abstract

This paper describes the enhancement in the strength of the conventional concrete by the addition of fibres. Coconut fibres and polypropylene fibres (recron 3S) are used to increase the strength of the conventional concrete. The coconut fibres of various proportions from 1%, 1.5%, 2%, 2.5% and polypropylene fibres of proportions of 0.4% by volume of concrete were used in the M40 grade concrete mix. Slump test was carried on fresh concrete while compressive strength, split tensile strength and flexural strength were carried on hardened concrete. These tests are carried out to determine the mechanical properties of concrete upto 7, 28, 56 and 90 days for compressive strength, 28 days for split tensile strength and flexural strength. A notable increase in the flexural and tensile strength was found..