To Investigate Combined Influence of Steel Fiber and Silicafume on High Strength Concrete Rigid Pavement, Mohammed Yusuf Sagri, S.S. Kadam, Dr. C. P. Pise, Y. P. Pawar, D. D. Mohite,C. M. Deshmukh, Journal Impact Factor (2015): 9.1215 (Calculated by GISI) www.jifactor.com www.iaeme.com/ijciet.asp 196 editor@iaeme.com 1 M.E. Student, Department of Civil Engineering, SKN Sinhgad College of Engineering, Pandharpur 2 Assistant Professor, Department of Civil Engineering, SKN Sinhgad College of Engineering, Pandharpur 3 Associate Professor & HOD, Department of Civil Engineering, SKN Sinhgad College of Engineering, Korti, Pandharpur, Dist. Solapur ABSTRACT Fibres are generally mixed with concrete to enhance the resistance of cracking and strengthening of concrete. In this project, tests were carried out on steel fibre reinforced concrete to check the influence of fibres and silica fume on flexural strength of concrete. According to various research papers, it has been found that addition of steel fibres and silica fume enhances the strength of the concrete. In this project practical tests were carried out to find out optimum quantity of steel fibres required to achieve the maximum flexural strength for higher grades of concrete. Tests were also carried out on the concrete by placing the steel fibres in layers within the concrete at different depths. From the exhaustive and extensive experimental work it was found that with increase in steel fibre content (by weight of concrete) there was tremendous increase in Flexural strength. The minimum fibre content tested against different percentage of silica fume (5%, 10%, and 15%) and flexure strength is obtained. The experimental results were checked using linear regression technique. The results obtained by this test were used to design pavements to determine the advantages of mixing steel fibre and silica fume in high strength concrete. Keywords: Steel Fibre, Silica Fume, Flexure Strength, Rigid Pavement. INTRODUCTION Fibres are usually used in concrete to control cracking due to both plastic shrinkage and drying shrinkage. They also reduce the permeability of concrete and thus reduce bleeding of water. Some types of fibre produced greater impact, abrasion and shatter resistance in concrete. Generally fibre does not increase the flexural strength of concrete and so cannot replace moment resisting or structural steel reinforcement. Indeed, some fibre actually reduces the strength of concrete. The TO INVESTIGATE COMBINED INFLUENCE OF STEEL FIBER AND SILICAFUME ON HIGH STRENGTH CONCRETE RIGID PAVEMENT Mohammed Yusuf Sagri 1 , S.S. Kadam 2 , Dr. C. P. Pise 3 , Y. P. Pawar2, D. D. Mohite 2 , C. M. Deshmukh 2 Volume 6, Issue 6, June (2015), pp. 196-203 Article Id: 20320150606020 International Journal of Civil Engineering and Technology (IJCIET) © IAEME: www.iaeme.com/Ijciet.asp ISSN 0976 – 6308 (Print) ISSN 0976 – 6316(Online) IJCIET © I A E M E