EFFECT OF NANO-SILICA ON CONCRETE CONTAINING METAKAOLIN
Journal: International Journal of Civil Engineering and Technology (IJCIET) (Vol.7, No. 1)Publication Date: 2016-02-25
Authors : D. V. PRASADA RAO; S. VENKATA MARUTHI;
Page : 104-112
Keywords : Metakaolin; Nano-Silica; Cement Replacement; Modulus of Elasticity and compressive Strength; Iaeme Publication; IAEME; Civil Engineering; IJCIET;
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% MK 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.
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