http://www.iaeme.com/IJCIET/index.asp 104 editor@iaeme.com International Journal of Civil Engineering and Technology (IJCIET) Volume 7, Issue 1, Jan-Feb 2016, pp. 104-112, Article ID: IJCIET_07_01_009 Available online at http://www.iaeme.com/IJCIET/issues.asp?JType=IJCIET&VType=7&IType=1 Journal Impact Factor (2016): 9.7820 (Calculated by GISI) www.jifactor.com ISSN Print: 0976-6308 and ISSN Online: 0976-6316 © IAEME Publication EFFECT OF NANO-SILICA ON CONCRETE CONTAINING METAKAOLIN Dr. D. V. Prasada Rao Associate Professor, Department of Civil Engineering, Sri Venkateswara University College of Engineering, Tirupati-517 502, Andhra Pradesh, India S. Venkata Maruthi PG Student, Department of Civil Engineering, Sri Venkateswara University College of Engineering, Tirupati-517 502, Andhra Pradesh, India ABSTRACT In this paper the results of an experimental investigation on the use of Metakaolin (MK) and Nano-Silica (NS) on various properties of concrete are presented. Metakaolin and Nano-Silica are used as partial replacement of cement for the preparation of concrete. In the present investigation initially cement is partially replaced by Metakaolin 5% and 10% by weight. Further investigation is carried out by combined replacement of Metakaolin at 5% and 10% with Nano-Silica at 1%, 2% and 3% by weight of cement. For structural applications the various properties, such as compressive strength, split tensile strength, modulus of elasticity and flexural strength of M25 grade concrete containing MK and NS are evaluated and the results are compared with the controlled concrete. Based on the test results, it can be observed that concrete prepared with a combination of 5% M K and 2% NS indicated increased strength compared to the controlled concrete. Hence, it can be concluded that concrete prepared with 5% MK and 2% NS combination can be recommended for the structural applications. The increase in the strength properties of concrete is due to the availability of additional binder in the presence of MK and NS. Key words : Metakaolin, Nano-Silica, Cement Replacement, Modulus of Elasticity and compressive Strength. Cite this Article: Dr. D. V. Prasada Rao and S. Venkata Maruthi. Effect of Nano-Silica on Concrete Containing Metakaolin. International Journal of Civil Engineering and Technology, 7(1), 2016, pp. 104-112. http://www.iaeme.com/IJCIET/issues.asp?JType=IJCIET&VType=7&IType=1