2.high temperature stability
3.low temperature crack resistance
Asphalt pavement was constructed widely in domestic and international freeways, bridge and tunnel, with the good performance, such as no joints, surface formation of good, smooth ride, comfortable oriented, high degree of mechanization construction, progress rapidly, good quality, and simple maintaining. However, traffic tunnel fire was an international problem, and many countries of the world have been appearing very serious tunnel fire.
To remedy the above-mentioned disadvantages, double modification for asphalt should be researched to develop a type of viscosity reducing flame retardant asphalt, at the same time of reducing asphalt viscosity, improving asphalt flame retardant.
white mastic≥1400 ;black mastic≥1600
The water absorbed is less than 0.5%(by weight )after
It causes no spark during construction, fire resistant after drying, and extinguishes in 1s after fire source taken away.
There is no signs of flowing or foaming, after it is placed at the angle of 45o at the temperature of 95°Cfor 4 hours, and then for another 1 hour at the temperature of 120°C.
No cracks or peeling off occur after suspended at -40°C and +60°C for 2hrs respectively.
It can be touched with fingers after 5hr,while it costs 6days to dry completely.
Prevent the spread of fire, remedy the fire of international freeways, bridge and tunnel. It causes no spark during construction, and extinguishes in 1second after fire source taken away.
•Non-solidified, excellent elastic deformation, thus have good flame retardant;
•Non-toxic, odour less, no corrosive, environmental friendly;
•High temperature stability, low temperature crack resistance, water stability.
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