SSRG International Journal of Civil Engineering Volume 10 Issue 9, 11-21, September 2023 ISSN: 2348-8352/ https://doi.org/10.14445/23488352/IJCE-V10I9P102 © 2023 Seventh Sense Research Group ® This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Original Article Augmented Properties of High Strength Self Compaction Concrete Partially Replaced with Nano Mineral Admixtures M. Manoharan 1 , Vidhya Lakshmi Sivakumar 2 , M.Goutham Priya 3 , A.J.Jeya Arthi 4 , N.Mahamood Ul Hasan 5 1,3,4,5 Department of Civil Engineering, Rajalakshmi Engineering College, Thandalam, Chennai, India. 2 Department of Civil Engineering, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai, India. 2 Corresponding Author : vidhyalakshmis.sse@saveetha.com Received: 08 July 2023 Revised: 24 August 2023 Accepted: 10 September 2023 Published: 30 September 2023 Abstract - The construction industry continually evolves to meet the demand for more robust, durable, and sustainable concrete structures. To improve the mechanical and durability qualities of High-Strength Self-Compacting Concrete (HSSCC), this study examines the application of nano minerals as a partial substitution for cement. Fly ash, Silica Fume, Phosphogypsum, and Alccofine are examples of nanomineral admixtures used to improve concrete performance while reducing the environmental impact of regular cement. The experimental program encompasses a series of laboratory tests to assess the fresh concrete and mechanical attributes of the nano-modified HSSCC. Concrete samples curing for seven, fourteen and twenty-eight days will be utilized for these strength tests. The RCPT test, which gauges chloride ion penetration in concrete for twenty-eight, fifty-six and ninety days of curing, is conducted similarly. Tests like Flowability, L-Box, V-Funnel, J ring and V funnel at T5 minutes are among the tests on freshly built concrete. These tests are helpful for determining how well new concrete flows, passes over obstacles and resists segregation. The outcomes show that utilizing nanomineral admixtures dramatically improves the performance of HSSCC. Compressive strength and durability are notably increased, surpassing conventional HSSCC mixes, and the modulus of elasticity shows improvement, reflecting enhanced stiffness, durability and structural integrity. Keywords - Fly ash, Silica fume, Phosphogypsum, Alccofine, L-box, V-funnel, J-ring, Compressive strength, Modulus of elasticity, RCPT, Structural integrity. 1. Introduction Concrete, among the most ubiquitous construction materials, has been subject to continuous innovation and enhancement to meet the ever-increasing demands for more vital, durable, and sustainable structures. High-Strength Self- Compacting Concrete (HSSCC) represents a notable advancement in concrete technology, offering improved workability, reduced labour requirements, and enhanced structural performance. Yet, the conventional production of HSSCC relies heavily on Portland cement, a material associated with high carbon emissions and environmental impact. Researchers and industry professionals have focused on alternative materials and technologies in pursuing more sustainable construction practices. This study delves into a novel approach to address this challenge by exploring the incorporation of nano mineral admixtures as partially replaced cement in HSSCC. Nano-sized materials, in the form of Fly-Ash (FA), Silica Fume (SF), Phosphogypsum (PG), and Alccofine (AC), have garnered considerable attention due to their unique properties and potential to revolutionize the properties of traditional concrete. When skillfully integrated into concrete mixtures, these materials promise to enhance the mechanical and durability properties of HSSCC while reducing its environmental footprint. The drive for sustainability in the construction industry has never been more urgent, with climate change and resource scarcity casting a long shadow over the built environment. Since cement production contributes significantly to the world‘s carbon dioxide emissions, it is critical to look for creative solutions without sacrificing the strength and functionality of concrete structures. Nano mineral admixtures, with their ability to enhance properties and reduce the cement content, represent a compelling avenue for achieving this delicate balance. Through experimentation and analysis, this study aims to ascertain how nano-mineral admixtures work