The used of rubber material as additive in testing characteristics ac-wc using Nanggala river stone.

The use of rubber in asphalt mixtures is a new thing nowadays, but in practice its use has not been fully implemented throughout Indonesia. The approach using local materials has made many researchers perform various combinations, in this study one of the combinations used rubber material in testing the characteristics of asphalt on the AC-WC (Asphalt Concrete Wearing Course) layer. The purpose of this study was to determine the characteristics of AC-WC from the variation of mixing asphalt with used tires with a composition of 1%, 2%, 3%, and 4%. The method used in this study is to use secondary data on the composition of mixing AC-WC with added rubber tires, which are varied from 1% to 4% by weight of asphalt, based on the conventional Marshall test. The results of this study indicate that the stability value in testing the characteristics of the asphalt mixture with an average value of 1532 kg (minimum requirement of 800 kg), VIM (Void in Mix) test with an average value of 3.7% (minimum requirement of 3%), flow testing with a value of 3.7% an average of 2.3mm (minimum requirement of 2mm), VMA (Void in Mineral Aggregate) content with an average value of 16 (15 percent requirement), Marshall stability value of the remaining 94% AC-WC mixture meets the general specifications of Bina Marga 2018.