Road surface material mixed with inorganic flaming-resistant agent and asphalt-mastic-broken stone

Abstract

Road surface material mixed by an inorganic flame retardant and an asphaltum gum grease detritus is used for a tunnel asphaltum road surface, which solves the high-effective flame retardant problem. The components of the mixture, according to the total weight of the asphaltum mixing material, is that: 0.3-0.5 wt. % of mineral fiber; 1.2-1.5 wt.% of inorganic flame retardant; 5.5-6.0 wt.% of asphaltum; 92.0-93.0 wt.% of detritus. The effective asphaltum flame retardant and mineral fiber are applied in the tunnel SMA road surface. It will solve the safe problem of the tunnel asphaltum road surface by effectively improving the flame retardant of the asphaltum mixing material without changing the road performances of the former asphaltum mixing material. The formula also does not gain the construction difficulty. Therefore, the effective flame retardant asphaltum gum grease detritus for tunnel has a good expanding value.

Description

technical field [0001] The invention relates to a material used for tunnel asphalt pavement, in particular to a pavement mixed material for solving the problem of high-efficiency flame retardancy, and belongs to the technical field of road asphalt pavement material manufacturing. Background technique [0002] Tunnels are an important part of expressways, and are often the throat of expressways. Due to the relative closure of large tunnels, tunnel fires not only cause serious damage to tunnel facilities and tunnel structures, but also cause road traffic interruptions ranging from a few days to tens of days or even longer, and seriously threaten human life and property safety. , causing incalculable economic losses. Once a fire breaks out in the tunnel, a large amount of smoke and heat are not easy to get rid of. The tunnel is full of smoke, lighting is damaged, visibility is reduced and accompanied by high temperature and poisonous gas, which brings great difficulties to saf...

AI Technical Summary

Problems solved by technology

However, the amount of asphalt on SMA pavement is more than 1% higher than that of general asphalt pavement, and about 0.3% (same aggregate weight ratio) of combustible lignin fiber is added as a stabilizer. All the plain fibers will play a combustion-supporting role, which increases the difficulty of tunnel fire rescue and causes greater losses