What does «material bituminoso» mean in Spanish?
- These are organic materials with good adhesion and impermeability properties. Black in color, they can be solid or viscous, they soften with heat. They have their origin in crude oil and also the destructive distillation of substances of carbonaceous origin. They have been used for thousands of years as building materials. For example, in Mesopotamian constructions and in the Indus Valley, more than 3,800 years before Christ. Natural bitumen was used in road construction, masonry and other uses. Today, chemical bitumens derived from petroleum and coal are used.