Brief introduction of asphalt and asphalt mixture

In our daily life, asphalt is no stranger to us. As we all know, asphalt is the material we must use to build roads. Let Bian Xiao introduce two building materials, asphalt and asphalt mixture.

First of all, Bian Xiao introduced asphalt to everyone. In life, common asphalt is semi-solid or liquid. It is insoluble in water and is an insulator at room temperature. Asphalt is poisonous. Generally speaking, asphalt is a dark brown complex mixture composed of hydrocarbons and nonmetals with different molecular weights. Asphalt is mainly used in industry, such as paint, plastic, building pavement and so on.

Asphalt is mainly divided into coal tar asphalt, natural asphalt and petroleum asphalt. Among them, the product of coking coal tar pitch is the black substance left after tar distillation. Compared with the other two kinds of asphalt, coal tar asphalt is more toxic. Therefore, in the distillation process, coal tar pitch contains anthracene, pyrene and phenanthrene, which is difficult to volatilize. Natural asphalt is formed underground, in cracks or on the surface. This natural asphalt is generally non-toxic after surface volatilization. Petroleum asphalt is formed after crude oil processing. According to the different processing temperature environment, the formed petroleum asphalt is also different. In the process of processing, there are often mineral residues, which will have a certain impact on human health to a certain extent.

Secondly, talk about asphalt mixture. Asphalt mixture is processed from asphalt, and the main raw materials are asphalt, coarse aggregate, fine aggregate and other mixtures. According to the different materials, the performance and function of asphalt mixture are also very different.

Different asphalt mixtures have different uses. Let's talk about the uses of several common hot-mixed asphalt. Common common asphalt mixture is mainly used for paving roads, sidewalks and other places. Modified asphalt is mainly used in highways, main roads and other places because it has good rutting resistance at high temperature and cracking resistance at low temperature. More wear-resistant and longer service life. How many kinds of asphalt are there? Horse body fertilizer macadam mixture, modified asphalt horse body macadam mixture, etc. These high-performance asphalt mixtures are generally used in building materials, trunk roads and so on.

In China, the demand for asphalt and asphalt mixture has been in short supply. We should know more about asphalt and asphalt mixture and its application. To make up for the increasing demand in the asphalt market.

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