ABSTRACT
BATAKO DESIGN USING SLAG NICKEL FENIL TYPE IV

Since the issuance of Government Regulation no. 101 of 2014, then the process of removing the nickel slag has been stopped. So the problems that occur now is the increasing number of piles of nickel waste in the factory PT. AntamPomalaa that can cause serious problems for the company so it needs a faster handling before the bad impact for the company itself which later can also impact on the community. The nine phenyl type IV slag brick is a creativity to utilize the waste material effectively, cheaply and safely in use.
Batako in this study was made from a mixture of cement, type IV nickel slag, sand and water. The purpose of this research is to make nickel slag of type IV phenyl as alternative material of sand substitution in batako making. The composition of the sample used the cement ratio: sand = 1: 7 (in% volume). The substitution of nickel type IV phenyl slag is varied from 0%, 25%, 50%, 75% and 100%. The test sample was formed of hollow brick with size 40 cm × 18 cm × 10 cm and compressive strength test was done at the time of test object 28 day old.
After a naturally occurring 28-day drying, the average compressive strength of 0% slag was found to be 12.92 Kg / Cm2, 25% slag 18.75 Kg / Cm2, 50% slag of 19.58 Kg / Cm2, 75% slag of 18.33 Kg / Cm2 and for 100% slag does not meet the visual test so it can not be tested its compressive strength. Batako produced by the four variations are classified as IV type bracket (SNI 03-0349-1989). The composition with the use of 50% slag of nickel phenyl type IV to sand substitution yielded compressive strength better than the composition of 0% nickel phenyl type IV slag, so it can be concluded that IV type nickel slag can be used as sand substitution in the making of brick and can increase compressive strength of brick.
Keywords:nickel slag, hollow brick, compressive strength.