Warm-mixing environmental-protection inorganic flame retardant for tunnel road surfaces

Abstract

The invention discloses a warm-mixing environmental-protection inorganic flame retardant for tunnel road surfaces. The flame retardant is prepared by mixed ball milling of the following raw materials by the weight percentage: 53%-55% of aluminum hydroxide, 18%-20% of magnesium hydroxide, 19%-24% of zeolite, 2%-3% of nano TiO2, and 2%-3% of a tourmaline powder. The warm-mixing environmental-protection inorganic flame retardant is applied in tunnel road surface asphalt thus can improve the fire protection ability of an asphalt mixture, allows the asphalt mixture to have good flame retardation, also can reduce the mixing temperature of the asphalt mixture, and achieve purposes of energy conservation and emission reduction; and in addition, the flame retardant also has the function of reducing the car tail gas concentration inside tunnels, and is quite beneficial for improving the driving environment inside the tunnels.

Description

technical field [0001] The invention belongs to the technical field of pavement asphalt materials, and in particular relates to a warm-mixing environment-friendly inorganic flame retardant for tunnel pavement. Background technique [0002] With the construction and opening of a large number of highway tunnels in our country, the fire risk caused by traffic accidents in the tunnel is also increasing. The highway tunnel is a relatively closed engineering structure. In order to ensure the safety of the tunnel, the issue of fire prevention and disaster relief in the tunnel is particularly important. [0003] At present, hot-mix asphalt mixture is generally used for pavement in domestic tunnel asphalt pavement construction, but asphalt mixture is a temperature-sensitive material. In order to achieve the expected performance of asphalt pavement, it is necessary to mix asphalt Heating to about 145°C ~ 170°C, heating the mineral material to 155°C ~ 185°C, and then mixing the asphalt...

AI Technical Summary

Problems solved by technology

A large amount of exhaust gas accumulation will form a high exhaust gas concentration. When the concentration reaches a certain limit, it will cause coma or even death. The smoke formed by the exhaust gas not only affects the driver's sight, but also directly pollutes the tunnel through photochemical reactions with other pollution sources. Due to the poor ventilation inside the tunnel, the gradually accumulated exhaust gas will form oil stains on the road surface, which will reduce the anti-skid performance of the road surface and affect the safety of the tunnel.

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