Marshall Immersion Performance of Asphalt Concrete - Binder Course Mixture by Utilizing Silica Waste as Fine Aggregate Substitution Lusyana,Mukhlis,Enita Suardi,Latifa Khairunnisa,Muhammad Huzzairi
Politeknik Negeri Padang
Abstract
Damage or failure often occurs in Asphalt Concrete - Binder Course (AC-BC) pavement layers. This is characterized by damage that appears in the form of grain stripping and surface defects in the form of holes to fatigue cracks. The number of road failures indicates that silica sand needs to be used as a substitute for fine aggregate to improve the quality of the pavement. Silica sand substitution is expected to increase pavement durability. Based on the IRS, IDF, and IDS values obtained for each mix, the mix substituted without silica (0%) showed the smallest average loss of soaking strength compared to the other mixes. However, although the IRS decreased, silica sand can still be used because the IRS value still meets the specification of at least 90%.
Keywords: AC-BC, Silica Sand, KAO Marshall, Marshall Immersion, Asphalt Film Thickness.
