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Zahedi M, Zarei A, Adineh far Y. Evaluated rheological properties of bitumen modified lignin derived from waste paper. JCES 2017; 1 (1) :1-12
URL: http://journals.lu.ac.ir/jces/article-1-41-en.html

The use of various additives including polymer additives to modify the properties of bitumen used in road pavement construction was crucial for researchers to use modified bitumen in the asphalt significantly increased pavement and operational life of them. Accordingly, in this study the effect of lignin derived from waste paper companies Chukka (Wood and Paper industries of Iran) on the performance of bitumen based on laboratory practices have been investigated. Lignin including natural polymers that in the paper production process must be separated from the texture of wood, so papermaking waste treatment plants to be found in large quantities. In this study different weight percentages of lignin polymer (3, 6, 9 and 12%) has been mixed with bitumen 60-70 Isfahan refinery and its impact on the various properties of bitumen was studied. Add this polymer improves the performance characteristics of the bitumen at high temperatures. Increasing lignin reduces the penetration grade, increase viscosity, increase rotary viscosity and softening point of bitumen. Also by increasing lignin, bitumen thermal sensitivity is reduced which indicates better performance is bitumen for road construction.