Water-blown warm-mix flame-retardant asphalt mixture, and preparation and design method thereof

Abstract

The invention discloses a water-blown warm-mix flame-retardant asphalt mixture and a preparation method thereof. According to the invention, through comprehensive utilization of a water-blown asphalt warm-mixing technology and an asphalt flame-retardation technology, construction temperature of an asphalt pavement is effectively reduced, the safety factor of a tunnel asphalt pavement is increased, and the advantages of energy conservation, emission reduction, greenness, environmental protection, reduction in construction cost, improvement of warm-mixing construction technology for tunnel flame-retardant asphalt pavements and the like are obtained. The invention also provides a design method for the water-blown warm-mix flame-retardant asphalt mixture. The method utilizes the concept of equivalent design of basic mix ratios and technique indexes to improve the traditional design method for the warm-mix flame-retardant asphalt mixture, provides bases for the design of the water-blown warm-mix flame-retardant asphalt mixture and fills a gap in the design method for the water-blown warm-mixed flame-retardant asphalt mixture.

Description

Technical field [0001] The invention relates to the technical field of a green environmentally friendly flame-retardant material, and specifically designs a water-foamed warm-mix flame-retardant asphalt mixture and a preparation and design method thereof. Background technique [0002] With the development of asphalt mixture warm mixing technology and flame retardant technology, many researchers and engineers began to try to combine asphalt mixture warm mixing technology and flame retardant technology to apply to tunnel asphalt pavement construction. Because the tunnel space is confined and narrow, the use of flame-retardant technology can increase the safety factor and reduce the casualties of tunnel accidents; the use of warm mixing technology can play a role in energy saving, emission reduction, and environmental protection, and at the same time can reduce the health of the constructors Therefore, the combination of warm asphalt mixture technology and flame retardant technology...

AI Technical Summary

Problems solved by technology

However, the traditional Marshall design method has many deficiencies in the design of warm mix asphalt mixture, which are mainly manifested in: (1) The mixing and construction temperature of the asphalt mixture after using chemical warm mix agent is mainly determined according to the production plant The data provided by the manufacturer and relying on previous experience have huge limitations in the warm mix construction of the mixture; (2) According to relevant research, using the traditional Marshall asphalt mixture design method to design warm mix flame retardant asphalt mixture will be It leads to a large amount of asphalt, which is contrary to the purpose of reducing the project cost

Based on the above problems, if the traditional Marshall asphalt mixture design method is used, the energy-saving and emission-reduction effects of warm-mix asphalt mixture will not be fully utilized, and at the same time, there will be little effect in reducing the project cost. Therefore, it is necessary to find a suitable warm-mix flame-retardant Asphalt mixture design method is imperative

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