Analysis of Selected Rheological Properties and Ageing Processes of Bitumens Used in Waterproofing Products

Commonly used waterproofing membranes consist, in over 80%, of bituminous blend. That is why thorough knowledge of factors having impact on the destruction of waterproofing products is of utmost importance. In many cases it is caused by rheological changes, especially ageing processes occurring in bitumen. The purpose of the research is to develop modern solutions that will slow down the processes which occur and thus will extend the life of waterproofing materials. The paper discusses factors affecting the intensity of bitumen ageing and describes physicochemical changes caused by ageing. It also presents test results of bitumen modified with imidazoline which can be used as inhibitors of ageing processes.