Asphalt is hydrophobic material, it is not permeable, and almost insoluble in water, acetone, ether, dilute ethanol, soluble in carbon, carbon tetrachloride, sodium hydroxide. In civil engineering, asphalt is a wide range of waterproof materials and anti-corrosion materials, mainly used in roofing, ground, underground structure of waterproof, wood, steel anti-korosen. Asfalt o rot enjiniaring long aplikesen bilong planti kain kain straksel simen samting, we i gat ol narapela narapela komposesen bilong ol mineral samting i stap long mak bilong wokim ol narapela narapela straksa bilong asfalt pavemen, ekspreswe aplikesen i bikpela moa.