• C THEJASWINI VEENA
• C. Sasidhar
• R Veera Sudarsana Reddy

The diverse demand for cement cannot be fully met by Ordinary Portland cement (OPC) alone. To address this demand while ensuring the durability analysis of modified concrete, In response to evolving needs, the incorporation of mineral additives and other by-products has become imperative to enhance performance without compromising quality.OPC cement and river sand are commonly used in the construction industry, but their availability is limited. Moreover, cement is a major contributor to CO2 emissions. Therefore, partial substitution of cement and natural sand with waste materials or by-products is essential to maintain the quality of the final product. Partial replacement with materials like Fly Ash (FA), Silica Fume (SF), and quartzite waste (QW) as sand substitutes has been employed. The use of Fly ash, Silica fume with cement results in more durable concrete with lower chloride ingress and better finish compared to concrete made with 100% Natural River sand. Apart from cost-effectiveness, reducing reliance on river sand addresses environmental and sustainability concerns, making a significant contribution to modified concrete production. Compressive strength tests were performed after3days, 7days, 28 days, and 56 days. The optimal replacement rate for crushed quartzite material was identified as 30%. To assess the properties of concrete incorporating crushed quartzite, comprehensive analyses, including Compressive Strength, split tensile strength, flexural strength, and SEM Analysis, were conducted for both conventional and ideal concrete mixes.

High performance concrete, Fly Ash, Silica fume, Quartzite Waste, Cement (OPC)

"Utilization of Quartzite Waste and Mineral Admixtures in High Performance Concrete", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 1, page no.g446-g450, January-2023, Available :http://www.jetir.org/papers/JETIR2301655.pdf

"Utilization of Quartzite Waste and Mineral Admixtures in High Performance Concrete", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 1, page no. ppg446-g450, January-2023, Available at : http://www.jetir.org/papers/JETIR2301655.pdf