What are the three indicators of asphalt?

The three indexes of asphalt refer to: penetration: the greater the penetration, the softer the asphalt and the smaller the viscosity. Ductility: the greater the ductility value, the better the plasticity. Softening point: The higher the softening point, the better the heat resistance.

asphalt

Asphalt is a dark brown complex mixture, which consists of hydrocarbons with different molecular weights and their nonmetallic derivatives. It is an organic liquid with high viscosity, which mostly exists in the form of liquid or semi-solid petroleum.

Asphalt is a waterproof, moisture-proof and anticorrosive organic cementing material, which is mainly divided into three types: coal asphalt, petroleum asphalt and natural asphalt, of which coal asphalt is a by-product of coking.

Asphalt is a hydrophobic substance, impervious to water, almost insoluble in water, acetone, ether and dilute ethanol, but soluble in carbon disulfide, carbon tetrachloride and sodium hydroxide.