Analisa Semen Portand Dan Abu Batu Sebagai Filler Dengan Marshall Dan Durabilitas Aspal Hotmix (AC – WC)

Abstract

The Department of Settlement and Regional Development issued a new specification on the Hot Mix Asphalt Planning Guidelines with absolute density approach. One of the new specifications issued is Asphalt Concrete – Wearing Course (AC – WC) as the 2nd wear layer in the asphalt concrete type layer, which is the topmost layer in flexible pavement. In the AC-WC mixture which usually uses rock ash filler at this writing, it is compared to using portland cement filler. The portland cement used itself is type I portland cement which is commonly used as a mixture in concrete construction and is often found in the market. Prior to Marshall testing and the durability of the mixture, the properties of portland cement and rock ash were tested for comparison. The result of testing the specific gravity of portland cement is 3.153 gr/cc while the specific gravity of rock ash is 2.635 gr/cc. For testing the material passes 75 microns in portland cement is 99.6% while in stone ash is 88.8%. The design asphalt content to be used in both the mixture with portland cement filler and rock ash is 5.5% of the total mixture. After the Marshall test with the design asphalt content was carried out, the optimum asphalt content obtained in the mixture with portland cement filler and rock ash had different values, namely at 100% stone ash it was 5.738%, 50% stone ash – 50% portland cement was 5.725 % and 100% portland cement is 5.725%, then equated to 5.7%. The KAO obtained has met the requirements for Marshall properties while VIM and VFA are the limitations.