PENGARUH DUST PROPORTION SPENT CATALYST RCC (LIMBAH PERTAMINA) TERHADAP KARAKTERISTIK MARSHALL DAN DURABILITAS PADA CAMPURAN HOT ROLLED SHEET DENGAN KEPADATAN MUTLAK ( THE INFLUENCE OF DUST PROPORTION SPENT CATALYST RCC (WASTE of PERTAMINA) TO CHARACTERISTIC of MARSHALL AND DURABILITY AT MIXTURE of HOT ROLLED SHEET WITH PRECENTAGE of REFUSAL DENSITY) - HURRIYANTO, JAVID (2008)