INVESTIGATION OF THE PROCESS OF MODIFICATION OF PETROLEUM ROAD BITUMEN BY MALEIC ANHYDRIDE
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Published:2021-12-15
Issue:2
Volume:2021
Page:39-45
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ISSN:2707-1057
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Container-title:Theory and Building Practice
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language:
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Short-container-title:Theory build. pract.
Author:
Gunka VolodymyrORCID, , Prysiazhnyi YuriyORCID, Hrynchuk YuriiORCID, Sidun IuriiORCID, Demchuk YuriyORCID, Bidos VolodymyrORCID, Reutskyy VolodymyrORCID, Bratychak MichaelORCID, , , , , , ,
Abstract
The possibility of modification of oxidized petroleum bitumen 70/100 produced by JSC "Ukrtatnafta" (Kremenchuk, Ukraine) with maleic anhydride was studied. The influence of maleic anhydride amount, process duration, and temperature on the main physical and mechanical characteristics of modified bitumen was studied. The optimal amount of maleic anhydride introduction to bitumen was established. It is found that 2 wt. % maleic anhydride allows to increase the softening temperature of the modified bitumen (from 46 °C to 52 °C). Adhesion to crushed stone also increases (from 2.5 points to 4.5 points) and other indicators improve. Sufficient time to modify the bitumen with maleic anhydride was 30 minutes. The optimum modification temperature for obtaining the modified bitumen with maleic anhydride is 130 °C. Increasing the temperature of the modification has a negative effect on the final physical and mechanical properties of the binder.
Publisher
Lviv Polytechnic National University
Reference21 articles.
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