A STUDY ON STRENGTH PROPERTIES OF CONCRETE CONTAINING MICRO-SILICA AND NANO- SILICA

P. Thasleem, K. Naveen Kumar

Abstract: This paper presents an experimental investigation on the influence of Nano-Silica (NS) on various strength characteristics of concrete containing Micro-Silica (MS). Micro-Silica and Nano-Silica are used as partial replacement of cement for the preparation of concrete. In the present investigation cement is partially replaced by 5% and 10% of Micro-Silica and 1.5% and 3% of Nano-Silica by weight. The combined application of Micro-Silica and Nano-Silica on various properties of M30 and M40 grades of concrete is investigated. The various properties of concrete under investigation include the compressive strength, split tensile strength and flexural strength. The test results of M30 and M40 grades of concrete prepared using different proportions of Micro-Silica and Nano-Silica are compared with that of controlled concrete. Based on the test results, concrete prepared with a combination of 10% Micro-Silica and 1.5% Nano-Silica possesses improved strength properties compared to the controlled concrete.

Keywords: Micro-Silica, Nano-Silica, Particle Packing, Combination and Strength of Concrete.

DOI: https://doi.org/10.15623/ijret.2016.0506011