✦ LIBER ✦

Studies on bitumen: Part 2. Changes in bitumen during weathering

✍ Scribed by M.H.B. Hayes; M. Stacey; J. Standley

Publisher: Elsevier Science
Year: 1972
Tongue: English
Weight: 808 KB
Volume: 51
Category: Article
ISSN: 0016-2361
DOI: 10.1016/0016-2361(72)90034-8

No coin nor oath required. For personal study only.

✦ Synopsis

Changes which occurred during exposure of a 200 penetration straight reduced bitumen to climatic conditions, to illumination under a light source, and to a soil cover in a greenhouse were studied. The rheological properties of the bitumen were altered more by illumination than by either of the other treatments. Acid-, alkali-, water-, and dioxansoluble products of weathering treatments were brown, fluorescent, low-molecular-weight compounds. The equivalent weight values of the water-soluble acidic components were compared with the results from gel filtration, paper electrophoresis, and mass spectrometry studies.

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