Abstract
Asphalt is a black, thermoplastic, hydrocarbon material extracted from crude oil and widely used in road construction all over the world. In order to meet the requirements of construction technology, asphalt always needs to be heated to flow state in the process of mixing and paving, during which a large amount of asphalt fume is released. Asphalt fume is a complex mixtures of inorganic compound gases, volatile organic compounds and particulate matter, which poses a serious threat to the natural environment and the health of practitioners. In order to solve this problem, researchers have developed different types of fume-suppressant. In this literature review, the properties, mechanisms and effects of all kinds of commonly used fumesuppressants were discussed in detail. Finally, the problems existing in the development of asphalt fumesuppressant and corresponding improvement considerations were pointed out.
Highlights
Asphalt in the high temperature mixing and paving process will produce a lot of fume, which is harmful to the natural environment and the health of employees
The irritating smell of asphalt fume seriously affects the quality of life of nearby residents
Most of the traditional asphalt fume treatment technologies need fixed equipment so that they are unsuitable for the construction site
Summary
Asphalt in the high temperature mixing and paving process will produce a lot of fume, which is harmful to the natural environment and the health of employees. The irritating smell of asphalt fume seriously affects the quality of life of nearby residents. The performance of asphalt material itself will be deteriorated due to the emission of fume. Most of the traditional asphalt fume treatment technologies need fixed equipment so that they are unsuitable for the construction site. In order to achieve the goal of sustainable development of highway engineering, many scholars have conducted research on asphalt fume-suppressant. The characteristics and mechanism of fume-suppressants are discussed in order to provide reference for the research and application of fume-suppressants in road engineering
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