Rice method were investigated at three Ievels each, involvin'g, some IIIS tests. 0rctm these test data. optin?um levels have hcen.rrc<,amacnrled f:o t~ntper,tture, residual pre,',ure, ttnd vacuuming, little. Use u( these optimutn levels is expected to improve tile reprctdtlcihilitv of lhe Rico method, espccially when highlv ahsorpticc a~gre`~ate, are u,ed in tile asphalt paving mixturcs. ! he intprcivcd Rice Method is also Ivkelv to minimize the necestiitv of u,in'-, file stiplilciliclitol (7COCedilrC..