The document summarizes a study on partially replacing cement with unprocessed steel slag in concrete. Three key points: 1) Concrete samples were created with 0-35% replacement of cement with steel slag, keeping all other parameters constant. Compressive and flexural strength were tested at 14 and 28 days. 2) The highest compressive strength was obtained with 20% replacement, showing a 21% increase over the control. Flexural strength peaked at 10% replacement, with a 12% increase over the control. 3) The study concluded that 20% cement replacement with steel slag provides desirable compressive strength, while 10% replacement is suitable for flexural strength in construction applications. Using steel slag partially replaces