Abstract
Cohesive zone traction–separation (T–S) relationships of a polymer modified bitumen commonly used as a sealant material in three-tab shingles are obtained by performing both Mode I and Mode II loading of the sealant material using a rigid double cantilever beam (RDCB) fixture. The RDCB experiments are performed for adhesive samples bonded at two different temperatures. The measured T–S relationships show significant differences between the Mode I and Mode II responses. The Mode II facture toughness is found to be much higher than the Mode I fracture toughness and the adhesive is more ductile in Mode II. The maximum traction in the T–S relationship for Mode II loading is marginally lower than measured for Mode I. The adhesive having a higher bonding temperature showed higher toughness and maximum traction for both Mode I and Mode II loading compared to the adhesive bonded at a lower temperature.
Published Version
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 call