The Effect of Submerged Arc Welding Slag on the California Bearing Ratio Value of Subbase Course Yelvi, Muhammad Noval Harlande, Rikki Sofyan Rizal, and Eva Azhra Latifa
Politeknik Negeri Jakarta
Abstract
The foundation layer is the part of the road pavement located beneath the surface layer that receives most of the load distribution from vehicles to the subgrade. With the advancement of time, especially in the construction industry, many innovations have been made to obtain foundation materials that meet specifications and are more affordable, one of which is the utilization of waste. This study utilizes waste from SAW (Submerged Arc Welding) as a substitute in the subbase course. The aim of this research is to determine the effect of SAW waste substitution on the CBR (California Bearing Ratio) value of the subbase course. The variations of SAW waste used as a substitution material in the subbase course are 0%, 10%, 15%, and 20%. The CBR soaking test refers to SNI 1744:2012 and the requirements are based on the Spesifikasi Umum Bina Marga Revisi II 2018. The CBR test results showed a decrease in SAW waste variations of 0%, 10%, 15%, and 20%, which were 97.2%, 69.1%, 67.5%, and 64.3%, respectively. However, the lowest result, which is the 20% SAW waste variation, still meets the requirements, which is ≥- 60% for the subbase course.
