IMPROVING THE PERFORMANCE OF LASTON AC-WC PADDING WITH THE UTILIZATION OF NICKEL SLAG WASTE

Author

Falderika, ST.,MT.

Abstrak

Utilization of waste as part of the road pavement material is an important issue. This is caused by the decreasing availability of natural materials as road raw materials and the increasing costs for procurement as well as the process of obtaining aggregates. As a result, alternative materials are needed and one of them is nickel slag. Nickel slag is categorized as Toxic and Hazardous waste (B3), so testing is needed to determine the content of the hazardous substances. The value of the Toxicity Characteristic Leaching Procedure (TCLP) test is smaller and meets the requirements, the results of testing the physical characteristics of nickel slag also meet the requirements used in road construction materials. The purpose of this study is to analyse the effect of using nickel slag on the performance of the Laston mixture (AC-WC). The tests were carried out based on the empirical method with the Marshall test which refers to the provisions of the properties of the Laston mixture (AC-WC) General Specifications for Roads and Bridges of Highways, Bina Marga, 2018. Variations in Reference Asphalt Content (KAA) used are 5%, 5.5%, 6%, 6.5%, and 7%. Based on the analysis results of the Marshall test, it is known that the use of nickel slag has better performance in terms of the higher Marshall stability value of 1803 kg compared to 1660 kg in a mixture without nickel slag. From the results of the tests and analyses carried out this nickel slag waste can be used as a new material in the asphalt mixture so that the impact is that the waste can be reused. Keywords: Laston AC-WC, Marshall, Nickel slag