Which substances are used to lower the temperature required to liquefy asphalt?

Cutbacks and emulsions are specifically designed to lower the viscosity of asphalt, allowing it to be liquefied at lower temperatures. These substances achieve this by incorporating solvents or water into the asphalt mix.

Cutbacks involve mixing asphalt with a petroleum solvent, which helps in reducing its viscosity without losing the essential properties of the asphalt. Emulsions are another form that disperses asphalt in water, making it easier to handle, mix, and apply while still allowing the asphalt to adhere and set when exposed to heat or when water evaporates.

Lowering the temperature required to liquefy asphalt is crucial for various methods of application; it helps in reducing energy costs, improving work conditions, and preventing degradation of asphalt quality due to excessive heat. These factors make cutbacks and emulsions vital components in the asphalt industry for paving and sealing applications.