International Research Journal of Engineering and Technology (IRJET) Volume: 04 Issue: 07 | July -2017
www.irjet.net
e-ISSN: 2395-0056 p-ISSN: 2395-0072
EXPERIMENTAL INVESTIGATION ON MECHANICAL PROPERTIES OF KEVLAR FIBRE Fasil Mohi ud din*1 M.Tech Structural Engineering in Department of Geotechnical and Structural Engineering VIT University Vellore Tamil Naidu -----------------------------------------------------------------***----------------------------------------------------------------Abstract
The experimental investigation was carried out on various types of fibres to find the use of the fiber in the structural engineering in particular and civil engineering in general. Various testing procedures were adopted to find the effectiveness and compatibility of fibre in concrete. In this paper the study was conducted about engineering and mechanical properties of Kevlar Fibre and in comparison with other fibers, testing of Kevlar fibre under various conditions and the very systematic comparative study was been carried out on the properties of Kevlar with respect to other fibers. The main objective of the study is to find out the mechanical properties and compatibility of fibre so that it can be used in concrete to enhance its properties and to increase its durability. Keywords:- Tensile Strength, Ultimate Strength, Thermal Properties, Salts Attacks 1. INTRODUCTION Although much of the research has been done to enhance the properties of concrete by various methods like by addition of Glass, coconut, Steel and by addition of some additives but not much research has been carried out by the use of kevlar fibre to check out the change in the mechanical properties of the Concrete. What made to think about this Kevlar Fibre? When this fibre is looked upon this fibre is an organic polymer which was invented by Chemist Stephanie in the year 1960’s and was introduced in the year 1971 although it has numerous applications like in tyre Reinforcement, Bullet Proof Amours. This paper presents the current research on tensile properties, acid attacks, radiation attacks and the degradation of the fibre caused under elevated temperatures. Chemical composition of Kevlar fiber There are literally hundreds of synthetic plastics made by Polymerization (joining long chain Molecules) and they have widely different properties. Kevlar amazing properties are due to its internal structure and how its molecules are naturally arranged in regular and parallel lines and partly due to the way it is made in fibers by Knitting. Chemical name for the Kevlar is C14H14N2O4 Poly (p-pheylene terephthalamide) Molecular Weight (274.276g/mol)
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