Experimental Investigation on Concrete by Replacement of Natural Sand using Steel Slag

Now a day's concrete plays a major role in construction industry. Availability of construction material is less day by day. So we can introduce a new kind of material in construction industry to reduce the cost as well as user friendly material. In the last few decades there has been rapid increase in the waste materials and by-products. Some of the industrial by-products like GGBS, fly ash, copper slag, steel slag, silica fume have been successfully replaced for cement and concrete in the construction industry. It reduces the consumption of natural resources.

Steel slag is one of the materials that is considered as a by-product (waste material) obtained during the matte smelting and refining of copper. It has the physical properties similar to that of the fine aggregate, hence it can be used as a replacement for fine aggregate in concrete. By the replacement of 0% to 100% of steel slag (by weight) as a replacement for fine aggregate will produce a concrete with durability requirements.

This works shows the results of an experimental study on strength and durability tests on concrete containing slag as a replacement of fine aggregate such as compressive strength test and rapid chloride permeability test. For this research work M40 grade was used and the tests are conducted for various proportions of slag with fine aggregate 25%, 50%, 75%, 100%. The obtained results were compared with those of conventional concrete.