www.cafetinnova.org Indexed in Scopus Compendex and Geobase Elsevier, Chemical Abstract Services-USA, Geo-Ref Information Services-USA, List B of Scientific Journals, Poland, Directory of Research Journals ISSN 0974-5904, Volume 07, No. 04 August 2014, P.P.582-587 #SPL02070410 Copyright ©2014 CAFET-INNOVA TECHNICAL SOCIETY. All rights reserved. Proceedings of 3-Day International Conference on Emerging Trends in Civil Engineering (ICETE-2014,) 6th–8th January, 2014 Effect of Glass Fiber on Mechanical Properties of Vibrated Concrete and Self Compacting Concrete M L VARA PRASAD 1 , P RATHISH KUMAR 2 AND L RAMA PRASAD REDDY 3 1 I & CAD Department, Irrigation Circle, Kurnool, Andhra Pradesh, India 2 Department of Civil Engineering, NIT, Warangal, Andhra Pradesh, India 3 Department of Civil Engineering, Andhra University, Vizag, Andhra Pradesh, India Email: prasadsmlv@gmail.com Abstract: Performance of civil engineering structures to a great extent depends on the characteristics of the materials used for their construction. Innovation in construction is highly linked with development of advanced construction materials. Fibre reinforced concrete can offer a convenient, practical and economical method for overcoming micro-cracks and similar type of deficiencies. Conventional concrete used in building and civil engineering applications requires compaction to achieve strength, durability and homogeneity. The typical method of compaction, vibration, generates delays and additional costs in projects and moreover is a serious health hazard in and around construction sites. Self-Compacting Concrete or Self Consolidating Concrete (SCC) is a highly flowable, stable concrete which flows readily into place, filling formwork without any consolidation and without undergoing any significant segregation. In the present work, Fiber Reinforced Vibrated Concrete (FRVC) and Fiber Reinforced Self-Compacting Concrete (FRSCC) were developed independently. A relationship is developed between the tensile strength and compressive strength, flexural strength and compressive strength of FRVC and FRSCC for M40 Grades of Concrete. The values of Compression, Split, Flexure and Modulus of Elasticity of VC and SCC with and without glass fiber were also compared with the Indian Standard Codal Provisions. Key words: Vibrated Concrete, Self Compacting Concrete, Glass Fiber, M40 Grade of Concrete, Mechanical Properties, Relationships. 1. Introduction: Self-compacting concrete was first developed by Professor Hajime Okamura [1] in Japan during the 1980s, and it can be produced by a number of approaches. In 1998, the Japanese Society of Civil Engineering (JSCE), organized along with international organization RILEM, the first international workshop on SCC [2]. Self-Compacting Concrete (SCC) is considered as a concrete which can be placed and compacted under its self-weight with little or no vibration effort, and which is at the same time, cohesive enough to be handled without segregation or bleeding. It is used to facilitate and ensure proper filling and good structural performance of restricted areas and heavily reinforced structural members [3]. Self-Compacting Concrete (SCC) has gained wide use for placement in congested reinforced concrete structures with difficult casting conditions [4]. For such applications, the fresh concrete must possess high fluidity and good cohesiveness. 1.1 Fiber Reinforced Concrete Concrete made with Portland cement has certain characteristics and it is relatively strong in compression but weak in tension and tends to be brittle. The weakness in tension can be overcome by the use of conventional rod reinforcement and to some extent by the inclusion of a sufficient volume of certain fibers. Fiber is a small piece of reinforcing material possessing certain characteristic properties. They can be circular or flat. The use of fiber reinforced concretes (FRC) has increased in building structures because the reinforced fibers in concrete may improve the toughness, flexural strength, tensile strength, impact strength as well as the failure mode of the concrete [5]. The properties of fibers that are usually of interest are fiber concentration, fiber geometry, fiber orientation, and fiber distribution. Concrete is brittle under tensile loading and the mechanical properties of concrete may be improved by randomly oriented short discrete fibers which prevent or control initiation and propagation or coalescence of cracks.