High-grade asphalt composition having waterproof function and construction method using the same

A high-grade asphalt composition to repair road and bridge deck pavements, comprising:

• 100 parts by weight of an asphalt mixture comprising 70-80 wt. % of a petroleum-based asphalt and 20-30 wt. % of a natural asphalt, the natural asphalt comprising at least one of Trinidad lake asphalt and Trinidad epure asphalt;
• 40-80 parts by weight of styrene-isoprene-styrene;
• 20-60 parts by weight of a polymer resin, the polymer resin comprising at least one selected from among a polyester, a thermoplastic polyurethane elastomer, a methyl methacrylate, a polyamide, and mixtures thereof;
• 10-50 parts by weight of an anti-rutting agent, the anti-rutting agent comprising a polyethylene, an ethylene vinyl acetate, a polybutene, a high-impact polystyrene, a polypropylene, or a mixture of two or more thereof;
• 2-15 parts by weight of a filler, the filler comprising at least one of the following:
• bentonite, barium sulfate and aluminum hydroxide;
• 5-30 parts by weight of ceramic nanoparticles, the ceramic nanoparticles comprising silicon carbide, alumina, silica, zirconia-silica, ZnO, and TiO2;
• 5-10 parts by weight of a binder, the binder comprising petroleum-based resin, phenolic resin or a mixture thereof;
• 3-15 parts by weight of an antioxidant, the antioxidant being a bisphenol-, monophenol- or sulfur-based antioxidant;
• 1-10 parts by weight of a stabilizer, the stabilizer comprising acrylic polyol resin, non-yellowing polyurea resin, polyisocyanate, or a mixture of two or more thereof;
• 5-20 parts by weight of a fiber, the fiber comprising any one or a mixture of two or more selected from among asbestos, rock wool, polypropylene, polyester, natural cellulose fibers and mineral fibers;
• and
• 2-20 parts by weight of an adhesion promoter, the adhesion promoter comprising hydroxyethyl acryloyl phosphate, hydroxyethyl methacrylate phosphate, or a mixture thereof.