| 摘要 |
PURPOSE: A plant-mix type drainage additive is provided to have physical properties satisfying PG grade, to have excellent qualities in bleeding phenomenon in high temperatures, tensile strength, and to improve strength and flexibility in low temperatures. CONSTITUTION: A plant-mix type drainage additive comprises asphalt, process oil, and modifier, and additionally comprises thermal stabilizer, a crosslinking promoting antioxidant, and a water resistant adhesion enhancer. The drainage additive is manufactured by melt-uniform dispersion of 25-40 weight% of the asphalt, 20-40 weight% of the process oil, 20-35 weight% of the modifier, 5-15 weight% of the thermal stabilizer, 0.1-1.0 weight% of the crosslinking promoting antioxidant, and 0.1-0.7 weight% of water resistant adhesion enhancer at 140-200°C. The crosslinking promoting antioxidant is condensed of oxide of inorganic acid or organic acid. The water resistant adhesion enhancer is one selected from a group consisting of R-TES(triethoxysilane), R-TMS(trimethoxysilane), R-DMS(dimethoxysilane), R-DES(diethoxysilane), and mixtures thereof. [Reference numerals] (AA) Modifier + insulative stabilizer + crosslinking antioxidant; (BB) Water-resistant adhesive enhancer; (CC) Molding to Pellet with diameter of 5mm and length of 2cm or to a size of 1-30 cm and a thickness of 1-20 cm
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