Volume 2 - Issue 2, March - April 2026

Significant research has been conducted on the use of industrial and domestic wastes in concrete as a means of meeting the growing demand for environmentally friendly building materials. This research examines the joint application of recycled stone powder as a partial substitute for fine aggregate and waste pencil graphite dust as a partial substitute for cement in standard concrete. Recycled stone powder, a plentiful by-product from the stone crushing industry, provides better particle arrangement and shape, which may improve mechanical characteristics. On the other hand, pencil graphite dust, a carbon-rich waste product from households, acts as an environmentally friendly cement additive that may offer various functional advantages. The experimental program includes the preparation of concrete mixtures using different amounts of recycled stone powder (0%, 10%, 20%, 30% and 40% by volume of fine aggregate) and pencil graphite dust (0%, 5%, 10%, 15% and 20% by weight of cement) for M40 Grade of concrete. Thorough examinations, which consist of tests for compressive strength, split tensile strength, and flexural strength measures like water absorption and porosity, are performed at intervals of 7, 14, and 28 days for M40 grade of concrete. Initial findings indicate that moderate levels of replacement can attain acceptable strength, while also lowering cement use and encouraging the recycling of waste materials. The research emphasizes the promise of this hybrid concrete made from waste as a sustainable and effective building material, offering a route to environmentally friendly concrete.

G.Lokeswar Reddy, P.Subhasri,"Eco-Friendly Concrete for Suitable Replacements with Recycled Stone Powder as Fine Aggregate and Waste Pencil Graphite Dust as Cement" International Journal of Advanced Multidisciplinary Research and Educational Development, V2(2): Page(471-475) Mar-Apr 2026. ISSN: 3107-6513. www.ijamred.com. Published by Scientific and Academic Research Publishing.