| 摘要 |
PROBLEM TO BE SOLVED: To provide blown asphalt suitable for waterproof construction work, which inhibits odor and smoke generated when the blown asphalt for the waterproof construction work is heat melted at a high temperature, and has excellent workability. SOLUTION: The blown asphalt for the waterproof construction work has a softening point of≥90°C, a penetration rate of 20-40, a flash point of≥280°C, a fuller's brittleness point of≤-15°C, a temperature of≤220°C from which viscosity becomes 100 mPa s, a temperature of≤240°C from which viscosity becomes 60 mPa s, and a sag length of≤15 after a heating stability testing at 250°C. COPYRIGHT: (C)2005,JPO&NCIPI
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