Analysis on Partial Replacement of Fine Aggregates with Iron Slag

These days due to the growth of environmental awareness, as well as stricter regulations on managing industrial waste, the world is increasingly turning to use it as secondary raw material in other industrial workings. Due to industrialization huge amount of by-products are produced and to utilize these by-products is the main challenge faced in India. Iron slag is one of the industrial by-products from iron and steel making industries. In this work, I.S method for mix design and M25 grade for concrete are used. The partial replacement of fine aggregate waste iron slag is reused to partially replace of 0%, 20%, 30%, 40% and 50% of sand weight. The strength of concrete increases rapidly with increase the iron slag content and the optimum value of compressive strength is obtained at 50% replacement. After 50% replacement the strength decreases. The test performed to evaluate waste iron slag concrete quality include slump cone test, compressive strength test, split tensile test and flexural strength test. The composition was casted and tested for 7, 14 and 28 days. The primary components of iron and steel slag are limestone [Ca O] and silica [SiO2]. The results confirm that the use of iron slag overcome the pollution problems in the environment. The result shows that the iron slag added to the concrete had greater strength than the plain concrete.