A.I.  Lakhova, S.M.  Petrov, R.R.  Zakieva, D.A.  Ibragimova, L.R.  Baibekova, D.R.  Isakov, 
    Impact of the Group Content on the Properties of Bitumen of Different Grades,
    Research Journal of Applied Sciences,
    Volume 10,Issue 12,
    2015,
    Pages 917-921,
    ISSN 1815-932x,
    rjasci.2015.917.921,
    (https://makhillpublications.co/view-article.php?doi=rjasci.2015.917.921)
    Abstract: In this study, the group composition of different grades of bitumen was studied by SARA-analysis. Also, the physical and chemical properties and the test properties of studied bitumen were examined. The conclusions on the effect of group composition of bitumen on their physical-chemical and performance properties were presented. According to the analysis of obtained data, we may conclude about close relationship of bitumen chemical composition with its physical-chemical and operational performance. Comparing the physicochemical properties of the studied bitumen with the requirements of the relevant regulatory documents, it is expected to improve the low-temperature and adhesion-strength properties. This is due to a large concentration of hydrocarbon paraffin concentration in bitumen, the presence of which is clearly pronounced in the composition. The reason for such a “contrast” content of heavy resins with pyrobitumen and with lower molecular paraffinic-naphthenic hydrocarbons is the small number of intermediate compounds such as average molecular aromatic hydrocarbons.
    Keywords: Bitumen;physical-chemical properties;SARA-analysis;contrast;chemical