Influence of Potassium Humate on the Technological Aging Processes of Oxidized Petroleum Bitumen

: pp. 681 - 687
Lviv Polytechnic National University
Lviv Polytechnic National University
Lviv Polytechnic National University, Danylo Halytsky Lviv National Medical University
Lviv Polytechnic National University
Lviv Polytechnic National University, department of Highways and Bridges

The possibility of using potassium humate as an inhibitor of the technological aging of oxidized petro-leum bitumen has been investigated. Samples of potas-sium humate obtained from various raw materials, in particular peat and leonardite, were selected and compared. Aging coefficients have been calculated and operational properties of modified bitumen as a binding material for hot mix asphalt have been investigated. It was established that 3.0 wt. % of PH-3 added to oxidized petroleum bitumen, slows down the technological aging processes and allows obtaining asphalt concrete with better characteristics compared to the coating made on the basis of unmodified bitumen.

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