Dr. K.V. Krishna Reddy. Journal of Engineering Research and Application www.ijera.com ISSN : 2248-9622, Vol. 10, Issue 4, ( Series - IV) April 2020, pp. 20-22 www.ijera.com DOI: 10.9790/9622-1004042022 20 | Page Impact Strength of Glass Fibre Reinforced Concrete Panels Dr. K.V. Krishna Reddy Professor, MGIT, Hyderabad, Telangana, India ABSTRACT: High rise structures have become a regular phenomenon. As the height increases, use of flexible members in the structure makes it earth quake resistant. Moreover, the need of the day is to make the structures blast resistant Decrease in the dead load of the structure by use of prefabricated members makes the structure economical both in terms of time and labor. The aim of this study is to fabricate Glass Fiber Reinforced panels of various thickness to urge the Impact strength so as to suggest a suitable replacement to the regular RCC panels. 60 mm thick glass fibre reinforced panels were found to be equivalent to 100 thick conventional nominal reinforced concrete slab panels. Keywords: Glass fibres, high volume fibre, Impact strength ------------------------------------------------------------------------------------------------------------------------------------------- Date of Submission: 11-04-2020 Date of Acceptance: 27-04-2020 ------------------------------------------------------------------------------------------------------------------------------------------- I. INTRODUCTION Fibre Panels also called as claddings is a type of skin or layer on the outside of a building. It can be a part of building's framework or an intermediate layer with battens or spacers. It is mainly used not only to make the structures flexible to take dynamic loads of earthquake and blasts but also stop wind and rain from entering the building. In this regard an attempt is made to optimize the thickness of high-volume glass fibre reinforced panels in terms of their impact strength. II. LITERATURE REVIEW Kiran T. and Sadath Ali Khan Zai [3] focused on impact loading of high performance concrete of M60 grade of concrete integrated with carbon fibers and polypropylene fibers. The experimental result showed a significant increase in the energy absorption. Number of impact blows for the carbon and polypropylene fiber reinforced concrete test slab specimen were reported to be same. Kiran T. and N. Jayaramappa [5] reported their work on use of 1% Steel fibers with an aspect ratio of 70 on labs with dimensions of 600 x 600 x 60 mm cast with varying percentage of fly ash and ground granulated blast furnace slag. Muhammed Iskende and Bekir Karasu [4] in their work have concluded that Glass fibers have positive effect on stress–strain curve of glass fibre reinforced concrete and flexural strength, because of the increase in the aspect ratio of fibers resulting in an increase pull-out and energy absorption. Andreas Andersson [6] has presented work on slabs with an outer layer of 30 mm of steel reinforced fibre concrete, none of the slabs showed any significant fallout of concrete. The static and dynamic response of the slabs have been simulated using nonlinear finite element models. The models generally showed good agreement, both for static load, crack widths and response during impact. Philipp Löber and Klaus Holschemacher [7] worked on use of alkali-resistant macro glass fiber reinforced concrete in load-bearing members. They reported that glass fibers can be used in combination with conventional reinforcing bars and investigations indicated promising results. III. METHODOLOGY M30 grade of concrete has been designed confirming IS 10262-2009 [1] as control specimen. 15 cm cubes were cast to evaluate the mix design to cast slab of 100 mm thickness with minimum nominal reinforcement. Glass fibres 12 mm in length and 14micron meter in diameter with 1:1 sand to cement ratio are used to cast glass fibre reinforced panels of 500mm X 500mm at various thicknesses of 40mm, 60mm and 80mm. Impact strength is measured by a fabricated tripod device with a weight attached as in Fig 1. RESEARCH ARTICLE OPEN ACCESS