Bitumen process

Bi`tu´men proc´ess


1.(Photog.) Any process in which advantage is taken of the fact that prepared bitumen is rendered insoluble by exposure to light, as in photolithography.
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"This creates a seamless roof, in contrast to the old fashioned felt and bitumen process which results in so many problems for people with flat roofs."
Current mining technologies generate a net volume of 1.5 barrels of mature fine liquid railings for every barrel of bitumen processed. Alternative extraction technologies are under investigation, but companies will not readily adopt technologies that shift more of the cost to the present day and have not been proven commercially unless regulations require them to do so.
4, bitumen processed in the high-shear device does not seem to be affected by any significant ageing process (as compared to neat bitumen).
MDSC tests on neat and modified bitumen processed in the high-shear device, at 9500 rpm, have been undertaken in order to study the swelling process of waste EVA/LDPE by some compounds of the bitumen maltenic fraction (see Fig.
Figure 7b also shows the nonreversing heat flow curves for samples of modified bitumen processed at 9500 rpm and after 15, 30, 60, and 150 min processing, respectively.
Accordingly, a quite complete rheological (viscous and viscoelastic) characterization of both neat bitumen and waste EVA/LDPE modified bitumen processed under high-shear conditions has been carried out in a wide range of temperature.