Abstract
The features of gas formation and changes in the molecular structure and performance properties of BN grade waterproofing asphalt under gamma-irradiation at an absorbed dose to 200 kGy have been studied. The radiation-chemical yield of total gases did not exceed 0.46 molecule/100 eV, showing high resistance to gas evolution. Changes in the molecular structure confirm the occurrence of destructive processes in the polyaromatic moiety. The penetration and ductility of the irradiated samples increase by factors of 8 and 10, respectively, and the softening and flash points are 40°C lower than those in unirradiated samples. The mechanism of action of ionizing radiation on bituminous compositions has been discussed in terms of competition between destruction and polycondensation processes in high-molecular-weight heterogeneous systems, such as waterproofing asphalt.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
