STUDY OF MIX DESIGN METHOD FOR SPLITT MASTIX ASPHALT USING GYRATORY TESTING MACHINE

Abstract

We studied mix design method of Splitt Mastix Asphalt (SMA) applied for bridge deck pavement in stead of gussasphalt. The mix design procedure we adopted is Gyratory Testing Machine (GTM) which simulates actual rolling. As a result of our study is follows; Gyration number ND in mix design is given by passing percent of 2.36mm sieve size of SMA aggregate gradation. Asphalt content of SMA should be selected both to have air voids of under 3% level for having properties of impermeability and Dynamic Stability (DS) by wheeltracking test of over 3, 000 pass/mm for rutting registance.