Warm mixing and antiflaming asphalt mixture and preparation method thereof

Abstract

The invention discloses a warm mixing and antiflaming asphalt mixture, and further discloses a preparation method thereof as follows: first, inert filler and heated gravel are put into a stirring cylinder to be drily mixed for more than 5 seconds, then heated asphalt is poured into the stirring cylinder, and organic thinner visbreaker and efficient compound type flame retardant are added in the stirring cylinder to be stirred so as to uniformly cover the gravel until the gravel is completely covered by the asphalt without any grey material; and the factory inspection temperature of the mixture is controlled between 135 to 140 DEG C so that the warm mixing and antiflaming asphalt mixture is obtained. Compared with the common asphalt, the asphalt mixture prepared by the invention not only has better high-temperature performance, ageing resistance, temperature sensibility and the like, but also has good heat insulation effect, no melting drippage, no thermal contraction and limited oxygen index larger than 32, adds organic thinner visbreaker so as to make the warm mixing and antiflaming asphalt mixture integrate the advantages of the flame retardant and warm stirring retardant into a whole, and is more beneficial to being promoted and applied on asphalt road surfaces.

Description

technical field

[0001] The invention relates to an asphalt mixture, in particular to a warm-mix flame-retardant asphalt mixture.

[0002] The invention also relates to a preparation method of the warm-mix flame-retardant asphalt mixture. Background technique

[0003] With the rapid development of expressways in our country, the number of highway tunnels as a special section of the highway is also increasing, and the length varies from several hundred meters to several kilometers. It is assumed that in this special section, once a fire occurs, such as: car cargo Fires and traffic accidents. Fires caused by vehicle collisions and subversion of cargo vehicles (especially tank trucks) will cause large smoke, high temperature, difficulty in exhausting smoke, difficulty in evacuation, and difficulty in fire fighting. The consequences are unimaginable. There have been many such accidents and the losses have been heavy. At present, for the fire prevention of highway tunnels, we sh...

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