@ARTICLE{Zieliński_K._Studies_2015, author={Zieliński, K. and Babiak, M.}, number={No 1}, journal={Archives of Civil Engineering}, pages={119-130}, howpublished={online}, year={2015}, publisher={WARSAW UNIVERSITY OF TECHNOLOGY FACULTY OF CIVIL ENGINEERING and COMMITTEE FOR CIVIL ENGINEERING POLISH ACADEMY OF SCIENCES}, abstract={Hard bitumens are used in the construction industry primarily in it’s unmodified form, for instance for the production of the so-called traditional roofing felt. Due to the low price of these types of membranes, the use of a popular but expensive modifying agent, SBS copolymer, is not justified economically. Research carried out by the authors has shown that chemical organic compounds belonging to a group of imidazolines may potentially be used as much cheaper bitumen modifier. It was demonstrated that a new type of modifier based on oleic imidazoline, developed by the authors, has a significant impact on improving the physical properties of bitumen. The use of this modifier results in a significant increase in the bitumen plasticity range, both before and after laboratory ageing .In addition, there was a considerable increase of bitumen’s resistance to aging. Its use can help improve the quality and durability of popular waterproofing products manufactured with the use of hard bitumen.}, type={Artykuły / Articles}, title={Studies of possible use of oleic imidazoline as modifying agent for hard bitumen}, URL={http://journals.pan.pl/Content/84002/mainfile.pdf}, keywords={hard bitumen, bitumen ageing test, oleic imidazoline}, }