Odorless asphalt mixture and preparation method thereof

Abstract

The present invention provides an odorless asphalt mixture, which comprises the following raw materials by weight: 40-60 parts of asphalt, 850-950 parts of aggregate, 20-100 parts of mineral powder, 0.2-1 part of an odor inhibitor, and 0.1-0.5 part of an interface active agent. According to the present invention, the odorless asphalt mixture acts through the odor inhibitor and the interface activeagent so as to effectively inhibit the formation and volatilization of H2S, SO2, NOX and other asphalt flue gases during asphalt mixture production and construction and significantly eliminate the odor, wherein the asphalt performance is not significantly changed; and the odorless asphalt mixture has characteristics of environmental protection, energy saving, consumption reducing, high cost performance ratio, convenient construction and the like. The present invention further provides a preparation method of the odorless asphalt mixture.

Description

【Technical field】 [0001] The invention belongs to the technical field of road engineering materials, and relates to a clean-smell asphalt mixture and a preparation method thereof. 【Background technique】 [0002] When asphalt is heated to lay roads, repair houses or make anti-corrosion coatings, a large amount of asphalt fumes will be generated, which will have a serious impact on the surrounding environment and endanger people's health. [0003] Smoke contains a variety of organic substances, including carbocyclic hydrocarbons, ring hydrocarbon derivatives and other compounds, many of which are harmful to human health. Asphalt smoke contains benzopyrene, benzanthracene, carbazole and other polycyclic aromatic hydrocarbons "like substances", and most of them are carcinogenic and strong carcinogenic substances, the particle size is mostly between 0.1 and 1.0 μm, the smallest is only 0.01 μm, and the largest is about 10.0 μm, especially the one represented by 3,4-benzopyrene A...

AI Technical Summary

Problems solved by technology

[0004] At this stage, asphalt flue gas is mostly treated with additional flue gas purification devices. For example, the absorption purification method uses the different solubility of each mixed component in the exhaust gas in the selected absorbent, or the interaction between a certain component and the active component in the absorbent. Reaction to purify exhaust gas; and adsorption purification method is to use porous solid (adsorption filter material) to accumulate or condense one or more components in the fluid (gas or liquid) mixture on the surface to achieve the purpose of separation; However, these flue gas treatment equipment have large initial investment and high operating costs. They can only be used to control the collection of flue gas in the asphalt production process and reduce emissions, but cannot avoid the re-emission of asphalt fume in subsequent asphalt construction applications.

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