IJSRSET162165 | Received: 30 January 2016 | Accepted: 04 February 2016 | January-February 2016 [(2)1: 272-274] © 2016 IJSRSET | Volume 2 | Issue 1 | Print ISSN : 2395-1990 | Online ISSN : 2394-4099 Themed Section: Engineering and Technology 272 Strength Gain Analysis of Polypropylene Fiber Reinforced Concrete Saman Khan 1 , Roohul Abad Khan 2 , Amadur Rahman Khan 3 , Saiful Islam 4 1 Integral University, Lucknow, India 2,4 King Khalid University, Abha, Saudi Arabia 3 Aligarh Muslim University, Aligarh, India ABSTRACT The use of fiber in concrete is becoming a common practice in the concrete industry. The study undertakes the analysis of compressive and tensile strength of Polypropylene fiber reinforced concrete specimen. The strength was analyzed at 7 days and 28 days and compared with non-reinforced concrete specimen to determine the strength gain. The study concluded with significant strength gains in fiber reinforced concrete in terms of compression and split tensile strength. Keywords: Fiber, Compressive And Tensile Strength, Polyproyplene Fiber Reinforced Concrete, Strength Gain I. INTRODUCTION Concrete serves as the base for human development in the modern age. Brittleness of concrete when subjected to tensile loads is well known; tensile strength of the concrete is approximately one tenth of its compressive strength. Reinforced concrete was introduced to overcome this drawback of concrete and has been successfully used worldwide. The reinforcement of concrete significantly increases its strength, but to produce a concrete with homogenous tensile properties and better micro-cracking behavior, fibers are advantageous [1,2,3,4,5]. The introduction of fibers in concrete has brought a solution to develop a concrete having enhanced flexural and tensile strength, which are a new form of composite material. The fibers are incorporated into concrete to enhance its control crack system and mechanical properties such as toughness, impact resistance, ductility (post cracking), tensile strength etc. of basic matrix. The term fiber reinforced concrete (FRC) is concrete containing fibrous material which increases its structural integrity. It contains discrete fibers of varying length that are uniformly distributed and randomly oriented. When fiber is added to a concrete mix, each and every individual fiber receives a coating of cement paste. Modification of synthetic fiber geometry includes monofilaments, fibrillated fibers, fiber mesh, wave cut fiber large end fibers etc. This increases bonding with cement matrices without increasing in its length and minimized chemical interaction between fibers and the cement matrices. Fiber can be used with admixture such as super plasticizer, air entraining, retarding, accelerating etc and all type of cement and concrete mixtures. A number of studies are done to study the effect of Polypropylene fiber Effect on concrete and soil. In present study polypropylene and steel fibres have been used. Polypropylene fibre having low modulus, light density, small monofilament diameter and not susceptible to corrosion and steel fibre increases its ductility, toughness, and impact resistance. II. METHODS AND MATERIAL Compressive strength of each concrete mix was determined usingand compared with standard concrete mix at 0% fibre and also inter compared with all mixes. Three specimens of each mix were tested to determine the average compressive strength of concrete mixes at 28 days. The specimens were tested under compression testing machine of 2000 KN capacity as per IS 516- 1959[26].