タイトルまたは説明

Bitumen by definition is, a variety of mixtures of hydrocarbons, derived from the refining of crude
oil. It is a thermoplastic material and its stiffness is dependent on temperature. The temperature
vs. stiffness relationship of bitumen is dependent on the source of crude oil and the method of
refining. Main usage is road surfacing and water-proofing.
Bitumen is completely soluble in carbon disulphide (CS2), and has adhesive and water-proofing
capabilities. It consists mainly of hydrocarbons and is typically made from about *0% carbon and
*5% hydrogen, with balance amounts being oxygen, nitrogen and other trace particles.
Penetration grade bitumen is commonly used in road surfacing, and minor industrial applications.
Penetration determines the hardness of bitumen by measuring the depth to which a standard
loaded needle will vertically penetrate in 5 seconds, in a sample of bitumen maintained at a
temperature of *5 degrees Celsius.
Steel drums