Potential Use of Pomalaa Nickel Slag as A Substitute for Sand in Brick Making
The latest variance of nickel slag from PT.Antam Pomalaa hasmaterial gradation size equivalent to sand has, so it has potentially as a sandsubstitute material. The study aims to determine the use of fine nickel slag asa substitute for sand in brick making. Nickel slag used is variation of 0%,25%, 50%, 75% and 100% against of total weight of sand. The brick isdesigned with a cement – sand ratio of 1 : 7. The experimental is a hollow brickwith dimension of 40 cm×18 cm×10 cm. Compressive test is done after brickcuring along 28 days. The maximum result of compressive test is obtained inthe use of 50 % nickel slag of 19.58 kg/cm2 compared to the brick withoutnickel slag of 12.92 kg/cm2. The conclusion that by using a fine nickel slagtype of fenil iv up to 50 % on production, it can reduce sand use and improvethe strength up to 51%.