Oxidized asphalt takes you to understand the combined structure of asphalt

Upload time :2022/4/15 14:19:34

The most common approach in recent years is to oxidized asphalt use L.W.Corbett to classify bitumen into plump, aromatic, colloidal and bituminous groups.

Through the elucidation of the colloidal structure, with the decrease of the fullness of the slack medium and the content of aromatics, the content of the slack protectant and asphalt and asphalt increased from the ash structure to the ash-gel structure. Asphalt permeability decreased and softening temperature increased.

The best traction can be obtained through the proportion of harmonious asphalt, but the above rules only apply to the asphalt of the same oil source and the same process, as shown in Table 1, all the asphalts are "Daqing" crude oil. Regarding the same crude oil, different processes are used for the preparation of asphalt by dehydration of propylene, or the same preparation process is used, or even different types of petroleum and asphalt preparation processes are used, even if the component content is close to

This is because the chemical compositions of asphalts from different origins and processes may be very close, but the chemical structures of the oxidized asphalt different compositions are different, and the solubility parameters are also different. In other words, each component has different compatibility and constitutes a different colloidal structure, so its technical function is also different.

Asphalt is an impermeable, hydrophobic material that is practically insoluble in water, acetone, ether, liquid ethanol, carbon disulfide, carbon tetrachloride, and sodium hydroxide.

Asphalt and its fumes have effects on skin and mucous membranes, phototoxicity and carcinogenicity. There are mainly three kinds of asphalt in my country: coal tar > shale asphalt > petroleum asphalt, the first two are carcinogenic. The main skin damage of asphalt: phototoxic dermatitis, only on the face, neck and other parts, skin damage; melanin, skin pathology is generally symmetrically distributed in the exposed area, leaf-like, brown to dark brown; hijacking accidents cause warts and burns. There are also common symptoms such as dizziness, abdominal pain, headache, chest tightness, weakness, boredom, loss of appetite, and the effects of the eyes, nose and throat.If you have any other questions, please contact us for oxidized asphalt details or contact us directly.

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