Comparative Study on the Modification of Bituminous Concrete by Nano Silica and Micro Silica

Meenu Karthikeyan

CALL FOR PAPERS : Oct-2023

Submission Last Date

25-Oct-23

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Comparative Study on the Modification of Bituminous Concrete by Nano Silica and Micro Silica

Author(s):

Meenu Karthikeyan , RAJIV GANDHI INSTITUTE OF TECHNOLOGY, KOTTAYAM

Keywords:

Indirect Tensile Stiffness, Indirect Tensile Strength, Marshall Stability, Microsilica, Modified Bitumen, Nanosilica

Abstract:

In the present scenario heavy traffic and unfavorable environmental conditions are detrimental to the quality of road pavements. Hence pavements need to be modified to attain improved performance and life span. Many researches have been conducted to analyse the suitability of different materials in pavement modification. In this study the effect of nano silica and micro silica on the properties of bitumen binder and mixture is evaluated. For the analysis 2, 4, 6 and 8 % of nano silica and micro silica are individually mixed with bitumen. The modified bitumen is tested for ductility, viscosity, softening point and penetration. The engineering properties such as Marshall Stability, retained stability, indirect tensile strength and indirect stiffness modulus of the bituminous mix are evaluated. From this study it is observed that nano silica is more effective than micro silica for the modification of the binder and as well as the mix.