Medium-temperature modified crack pouring adhesive and preparation method thereof

Abstract

The invention discloses a medium-temperature modified crack pouring adhesive and a preparation method thereof. A formula of the medium-temperature modified crack pouring adhesive comprises 80-90 parts of matrix asphalt, 3-7 parts of crack pouring adhesive modifier and 3-17 parts of rubber powder, wherein the matrix asphalt is a medium-temperature modified asphalt with a high solid content, and is composed of the following components in parts by weight: 75-82 parts of matrix petroleum asphalt, 3-7 parts of medium-temperature modifier and 11-22 parts of water. A medium-temperature modified crack pouring adhesive product prepared with the method has a curing effect significantly higher than that of a conventional crack pouring adhesive, can be cured in 1-2 hours, can significantly shorten the time duration of road closure caused by construction, and is conducive to easing the traffic pressure, thereby meeting needs of people. The medium-temperature modified crack pouring adhesive prepared with the method has a wider range of construction temperature and can be constructed under a climatic condition of 0-10 DEG C. However, a modified asphalt in the prior art cannot be constructed at a construction temperature below 10 DEG C, by comparison, the number of days for construction can be extended by 60 days, thereby meeting needs of road maintenance.

Description

technical field [0001] The invention relates to the preparation technology of asphalt in the field of road engineering, in particular to a medium-temperature modified joint-filling glue, and also relates to a preparation method of the medium-temperature modified joint-filling glue. Background technique [0002] With the construction and development of high-grade roads in my country in recent years, more and more people favor asphalt pavement, which is the main structural form of road and urban road pavement in China. However, during the use of asphalt roads, due to the combined effects of vehicle loads and natural environments for a long time, the asphalt pavement cracks and cracks occur. It will greatly weaken the strength and stability of the roadbed, cause more serious damage to the asphalt pavement, often bring a lot of inconvenience to driving, greatly shorten the service life of the road, and accelerate the destruction of the road surface. In the whole road maintenanc...

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Problems solved by technology

[0005] Commonly used joint glues have poor permeability, high brittleness, and pungent taste, which are harmful to workers and the environment. They have poor performance at high and low temperatures, and low ductility. The height only reaches 20cm, which cannot meet the needs at all, and also affects the traffic speed

[0006] How to prevent asphalt aging during construction has always been a difficult problem recognized by those skilled in the art and the direction of hard exploration, but so far no satisfactory technical solutions have come out

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