Environment-friendly flame-retardant micro-surfacing mixture for tunnel

Abstract

The invention relates to a material for maintenance of tunnel asphalt pavement, in particular to a pavement maintenance mixture for solving the problems of organic flame retardance and environmental protection, belonging to the technical field of manufacture of road asphalt pavement materials. The mixture comprises the following components in percentage by weight: 71-86% of macadam, 6-10% of modified emulsified asphalt, 1-3% of padding, 1-2% of organic flame retardant, 1-2% of assistant and the balance water. The environment-friendly asphalt flame retardant is applied to micro-surfacing maintenance and treatment of the tunnel asphalt pavement, and the flame retardance of the micro-surfacing mixture is improved without changing each property of the micro-surfacing mixture for the pavement, thereby solving the problems of fire safety and environmental protection of the tunnel asphalt pavement. The formula can not influence various service properties of the original pavement and does not increase the construction difficulty. Thus, the environment-friendly flame-retardant micro-surfacing mixture for the tunnel has better popularization value and can better solve the problem of flame retardance of the tunnel asphalt pavement in the process of maintenance.

Description

technical field [0001] The invention relates to a material for tunnel asphalt pavement maintenance, in particular to a pavement maintenance mixed material which solves the problems of organic flame retardancy and environmental protection, and belongs to the technical field of road asphalt pavement material manufacturing. Background technique [0002] 1. Development trend of tunnel pavement [0003] Due to the short history of building large-scale highway tunnels in my country, the research on tunnel pavement structure and materials in China is relatively weak. Most tunnel pavements use cement concrete pavement with a single structure type. On the one hand, it is because the cement concrete pavement has high strength and long service life, which is more in line with the needs of frequent construction in the tunnel, and the pavement is light in color, and the driving visibility is high; on the other hand, the fire performance of the cement concrete pavement is relatively good....

AI Technical Summary

Problems solved by technology

However, as the tunnel asphalt pavement layer is damaged, the flame retardant also loses its flame retardant effect. How to maintain the flame retardant effect of the asphalt pavement in the tunnel asphalt pavement maintenance stage needs to be further explored

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