Bitumen occurs naturally on the earth's surface all across the world - not least at La Brea - it has never needed discovery.
why bitumen is used
Mustek manufactures a variety of packed bitumen products. Their bitumen products are produced at the Europoort refinery in Rotterdam, Germany. They produce 3 types of bitumen: penetration bitumen,oxidized bitumen, and hard bitumen.
Bitumen is use as fuel.
Typically, bitumen and "asphalt" are interchangeable.
Bitumen Bi*tu"men
bitumen pitch means road surface
'asphalt' refers to a mixture of mineral aggregate and bitumen (bitumen)is the black liquid which is extracted from the crude oil....
ASTM D6847 gives the procedure for it
cut black bitumen needs a solvent to dilute it whereas emulsion doesn't.
Cut-back bitumen uses solvent as the mixing medium where in Emulsion uses water to dilute bitumen for the purpose of tack-coating / road works
Bitumen is used in place of coal tar in making roads.
It means eyes, black like coal. Bitumen is the British term for coal.