Odorless asphalt and preparation method thereof

Abstract

The invention provides odorless asphalt, and belongs to the field of asphalt materials. The odorless asphalt is prepared from the following components in parts by weight: 300-500 parts of matrix asphalt; 0.5-2 part of an odor removing agent; 0.2-0.5 part of a dispersing agent; and 10-20 parts of lotus leaf source biochar. The odor removing agent is a natural plant extracting agent, and the naturalplant extracting agent comprises an ethylene glycol solution of rosin water, a lemon peel extract and a mint extract. A preparation method of the odorless asphalt comprises the following steps: S1, mixing lotus leaf source biochar with the odor removing agent, adding a dispersing agent, and conducting stirring and mixing for 10-15 minutes at a rotating speed of 300-500 r / min; and S2, heating thematrix asphalt to 140-170 DEG C, adding the dispersing agent and the mixture obtained in the step S1 at the rotating speed of 200-400 r / min, and conducting stirring for 15-30 minutes to obtain the odorless asphalt. The method provided by the invention is simple, and the odor removing effect of asphalt is achieved through the synergistic effect of the odor removing agent and the lotus leaf source biochar.

Description

technical field [0001] The invention relates to the field of asphalt materials, in particular to a clean-taste asphalt 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 compounds, including carbocyclic hydrocarbons, derivatives of ring hydrocarbons, and other compounds, many of which are harmful to human health. Asphalt smoke contains various ring aromatic hydrocarbons such as benzopyrene, benzanthracene, and carbazole. Substances, and most of them are carcinogenic and strong carcinogenic substances, the particle size is mostly between 0.1-1μm, the smallest is only 0.01μm, and the largest is about 10μm, especially a variety of carcinogens represented by 3,4-benzopyrene . These include harmf...

AI Technical Summary

Problems solved by technology

[0004] At present, asphalt flue gas treatment mostly adopts adding flue gas purification devices. For example, the absorption purification method utilizes the different solubility of the absorbent selected for each mixed component in the exhaust gas, or a certain component reacts with the active component in the absorbent. , to purify the waste gas; another example is that the adsorption purification method uses porous solids (adsorption filter materials) to accumulate or condense one or more components in the liquid (gas or liquid) mixture on the surface to achieve the purpose of separation; but these smoke The initial investment of gas treatment equipment is large, and the operating cost is high. Intelligently control the collection of flue gas in the asphalt production process to reduce emissions, but it is impossible to avoid the re-emission of asphalt fume in subsequent asphalt construction applications