دراسة تاثير اضافة برادة الحديد علي خواص الخرسانة

Abstract

Abstract : This study investigates the effect of using iron shavings in concrete as an additive by weight of cement or as a partial replacement of sand, with the aim of improving concrete properties and utilizing industrial waste. Concrete mixes were prepared with different percentages of iron shavings (10%, 20%, and 30%), in addition to sand replacement up to 50%, and compared with a reference mix through standard tests, including compressive strength, slump, density, and water absorption at 7, 14, and 28 days. The results showed that adding iron shavings at moderate levels (10%–20%) improves workability, increases density, and reduces water absorption, indicating a better and more compact internal structure. It also enhances early age compressive strength. However, higher percentages (30% or high sand replacement) reduce performance due to increased voids and poor uniformity of the mix. The study concludes that the optimum percentage of iron shavings is between 10% and 20% by weight of cement, as it provides a good balance between strength and physical properties. It is recommended to use these percentages in practical applications, while further studies are needed to evaluate long term performance, especially durability and corrosion resistance. The use of iron shavings also supports sustainable construction by recycling industrial waste and reducing costs.